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<!-- Created: Thu Dec 19 16:56:15 UTC 2024 -->  
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_NASDAQ_100_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_NASDAQ_100_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_NASDAQ_100_ETFMember_lbl" xml:lang="en-US">Invesco NASDAQ 100 ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_NASDAQ_100_ETFMember" xlink:to="ck0001378872_doc_Invesco_NASDAQ_100_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Nasdaq_Biotechnology_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Nasdaq_Biotechnology_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Nasdaq_Biotechnology_ETFMember_lbl" xml:lang="en-US">Invesco Nasdaq Biotechnology ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_Nasdaq_Biotechnology_ETFMember" xlink:to="ck0001378872_doc_Invesco_Nasdaq_Biotechnology_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Nasdaq_Free_Cash_Flow_Achievers_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Nasdaq_Free_Cash_Flow_Achievers_ETFMember"/>    
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_NASDAQ_Future_Gen_200_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_NASDAQ_Future_Gen_200_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_NASDAQ_Future_Gen_200_ETFMember_lbl" xml:lang="en-US">Invesco NASDAQ Future Gen 200 ETF</label> 
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_NASDAQ_Next_Gen_100_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_NASDAQ_Next_Gen_100_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_NASDAQ_Next_Gen_100_ETFMember_lbl" xml:lang="en-US">Invesco NASDAQ Next Gen 100 ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_NASDAQ_Next_Gen_100_ETFMember" xlink:to="ck0001378872_doc_Invesco_NASDAQ_Next_Gen_100_ETFMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_PHLX_Semiconductor_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_PHLX_Semiconductor_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_PHLX_Semiconductor_ETFMember_lbl" xml:lang="en-US">Invesco PHLX Semiconductor ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_PHLX_Semiconductor_ETFMember" xlink:to="ck0001378872_doc_Invesco_PHLX_Semiconductor_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Russell_1000_Equal_Weight_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Russell_1000_Equal_Weight_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Russell_1000_Equal_Weight_ETFMember_lbl" xml:lang="en-US">Invesco Russell 1000 Equal Weight ETF</label>    
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_Enhanced_Value_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_Enhanced_Value_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_Enhanced_Value_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 Enhanced Value ETF</label> 
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_exRate_Sensitive_Low_Volatility_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_exRate_Sensitive_Low_Volatility_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_exRate_Sensitive_Low_Volatility_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 ex-Rate Sensitive Low Volatility ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_500_exRate_Sensitive_Low_Volatility_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_500_exRate_Sensitive_Low_Volatility_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_High_Beta_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_High_Beta_ETFMember"/>    
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_High_Dividend_Growers_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_High_Dividend_Growers_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_High_Dividend_Growers_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 High Dividend Growers ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_500_High_Dividend_Growers_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_500_High_Dividend_Growers_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_High_Dividend_Low_Volatility_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_High_Dividend_Low_Volatility_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_High_Dividend_Low_Volatility_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 High Dividend Low Volatility ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_500_High_Dividend_Low_Volatility_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_500_High_Dividend_Low_Volatility_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_Low_Volatility_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_Low_Volatility_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_Low_Volatility_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 Low Volatility ETF</label> 
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_Minimum_Variance_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_Minimum_Variance_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_Minimum_Variance_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 Minimum Variance ETF</label>     
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_Momentum_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_Momentum_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_Momentum_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 Momentum ETF</label>    
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_QVM_Multifactor_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_QVM_Multifactor_ETFMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_QVM_Multifactor_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 QVM Multi-factor ETF</label>    
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_500_Revenue_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_500_Revenue_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_500_Revenue_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P 500 Revenue ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_500_Revenue_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_500_Revenue_ETFMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_MidCap_400_QVM_Multifactor_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_MidCap_400_QVM_Multifactor_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_MidCap_400_QVM_Multifactor_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P MidCap 400 QVM Multi-factor ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_MidCap_400_QVM_Multifactor_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_MidCap_400_QVM_Multifactor_ETFMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_MidCap_400_Revenue_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_MidCap_400_Revenue_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_MidCap_400_Revenue_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P MidCap 400 Revenue ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_MidCap_400_Revenue_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_MidCap_400_Revenue_ETFMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_MidCap_Low_Volatility_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_MidCap_Low_Volatility_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_MidCap_Low_Volatility_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P MidCap Low Volatility ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_MidCap_Low_Volatility_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_MidCap_Low_Volatility_ETFMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_600_GARP_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_600_GARP_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_600_GARP_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap 600 GARP ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_600_GARP_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_600_GARP_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_600_QVM_Multifactor_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_600_QVM_Multifactor_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_600_QVM_Multifactor_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap 600 QVM Multi-factor ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_600_QVM_Multifactor_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_600_QVM_Multifactor_ETFMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_600_Revenue_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_600_Revenue_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_600_Revenue_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap 600 Revenue ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_600_Revenue_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_600_Revenue_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Discretionary_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Discretionary_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Discretionary_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Consumer Discretionary ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Discretionary_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Discretionary_ETFMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Staples_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Staples_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Staples_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Consumer Staples ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Staples_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Consumer_Staples_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Energy_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Energy_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Energy_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Energy ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Energy_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Energy_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Financials_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Financials_ETFMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Financials_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Financials ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Financials_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Financials_ETFMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Health_Care_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Health_Care_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Health_Care_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Health Care ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Health_Care_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Health_Care_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_High_Dividend_Low_Volatility_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_High_Dividend_Low_Volatility_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_High_Dividend_Low_Volatility_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap High Dividend Low Volatility ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_High_Dividend_Low_Volatility_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_High_Dividend_Low_Volatility_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Industrials_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Industrials_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Industrials_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Industrials ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Industrials_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Industrials_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Information_Technology_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Information_Technology_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Information_Technology_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Information Technology ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Information_Technology_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Information_Technology_ETFMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Low_Volatility_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Low_Volatility_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Low_Volatility_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Low Volatility ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Low_Volatility_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Low_Volatility_ETFMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Materials_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Materials_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Materials_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Materials ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Materials_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Materials_ETFMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Quality_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Quality_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Quality_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Quality ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Quality_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Quality_ETFMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Utilities_Communication_Services_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_SmallCap_Utilities_Communication_Services_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_SmallCap_Utilities_Communication_Services_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Utilities &amp; Communication Services ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_SmallCap_Utilities_Communication_Services_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_SmallCap_Utilities_Communication_Services_ETFMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_SP_Ultra_Dividend_Revenue_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_SP_Ultra_Dividend_Revenue_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_SP_Ultra_Dividend_Revenue_ETFMember_lbl" xml:lang="en-US">Invesco S&amp;P Ultra Dividend Revenue ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_SP_Ultra_Dividend_Revenue_ETFMember" xlink:to="ck0001378872_doc_Invesco_SP_Ultra_Dividend_Revenue_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Solar_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Solar_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Solar_ETFMember_lbl" xml:lang="en-US">Invesco Solar ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_Solar_ETFMember" xlink:to="ck0001378872_doc_Invesco_Solar_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_California_AMTFree_Municipal_Bond_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_California_AMTFree_Municipal_Bond_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_California_AMTFree_Municipal_Bond_ETFMember_lbl" xml:lang="en-US">Invesco California AMT-Free Municipal Bond ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_California_AMTFree_Municipal_Bond_ETFMember" xlink:to="ck0001378872_doc_Invesco_California_AMTFree_Municipal_Bond_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_CEF_Income_Composite_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_CEF_Income_Composite_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_CEF_Income_Composite_ETFMember_lbl" xml:lang="en-US">Invesco CEF Income Composite ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_CEF_Income_Composite_ETFMember" xlink:to="ck0001378872_doc_Invesco_CEF_Income_Composite_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Floating_Rate_Municipal_Income_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Floating_Rate_Municipal_Income_ETFMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Floating_Rate_Municipal_Income_ETFMember_lbl" xml:lang="en-US">Invesco Floating Rate Municipal Income ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_Floating_Rate_Municipal_Income_ETFMember" xlink:to="ck0001378872_doc_Invesco_Floating_Rate_Municipal_Income_ETFMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Fundamental_High_Yield_Corporate_Bond_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Fundamental_High_Yield_Corporate_Bond_ETFMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Fundamental_High_Yield_Corporate_Bond_ETFMember_lbl" xml:lang="en-US">Invesco Fundamental High Yield Corporate Bond ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_Fundamental_High_Yield_Corporate_Bond_ETFMember" xlink:to="ck0001378872_doc_Invesco_Fundamental_High_Yield_Corporate_Bond_ETFMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Fundamental_Investment_Grade_Corporate_Bond_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Fundamental_Investment_Grade_Corporate_Bond_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Fundamental_Investment_Grade_Corporate_Bond_ETFMember_lbl" xml:lang="en-US">Invesco Fundamental Investment Grade Corporate Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_Fundamental_Investment_Grade_Corporate_Bond_ETFMember" xlink:to="ck0001378872_doc_Invesco_Fundamental_Investment_Grade_Corporate_Bond_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_National_AMTFree_Municipal_Bond_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_National_AMTFree_Municipal_Bond_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_National_AMTFree_Municipal_Bond_ETFMember_lbl" xml:lang="en-US">Invesco National AMT-Free Municipal Bond ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_National_AMTFree_Municipal_Bond_ETFMember" xlink:to="ck0001378872_doc_Invesco_National_AMTFree_Municipal_Bond_ETFMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_New_York_AMTFree_Municipal_Bond_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_New_York_AMTFree_Municipal_Bond_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_New_York_AMTFree_Municipal_Bond_ETFMember_lbl" xml:lang="en-US">Invesco New York AMT-Free Municipal Bond ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_New_York_AMTFree_Municipal_Bond_ETFMember" xlink:to="ck0001378872_doc_Invesco_New_York_AMTFree_Municipal_Bond_ETFMember_lbl"/>   
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Preferred_ETFMember_lbl" xml:lang="en-US">Invesco Preferred ETF</label>  
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Senior_Loan_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Senior_Loan_ETFMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Senior_Loan_ETFMember_lbl" xml:lang="en-US">Invesco Senior Loan ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_Senior_Loan_ETFMember" xlink:to="ck0001378872_doc_Invesco_Senior_Loan_ETFMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Short_Term_Treasury_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Short_Term_Treasury_ETFMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Short_Term_Treasury_ETFMember_lbl" xml:lang="en-US">Invesco Short Term Treasury ETF</label>  
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    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Taxable_Municipal_Bond_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Taxable_Municipal_Bond_ETFMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Taxable_Municipal_Bond_ETFMember_lbl" xml:lang="en-US">Invesco Taxable Municipal Bond ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_Taxable_Municipal_Bond_ETFMember" xlink:to="ck0001378872_doc_Invesco_Taxable_Municipal_Bond_ETFMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_doc_Invesco_Variable_Rate_Preferred_ETFMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_doc_Invesco_Variable_Rate_Preferred_ETFMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_doc_Invesco_Variable_Rate_Preferred_ETFMember_lbl" xml:lang="en-US">Invesco Variable Rate Preferred ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_doc_Invesco_Variable_Rate_Preferred_ETFMember" xlink:to="ck0001378872_doc_Invesco_Variable_Rate_Preferred_ETFMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_S000037586Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000037586Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000037586Member_lbl" xml:lang="en-US">Invesco Dorsey Wright SmallCap Momentum ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000037586Member" xlink:to="ck0001378872_S000037586Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000073013Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000073013Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000073013Member_lbl" xml:lang="en-US">Invesco ESG NASDAQ 100 ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000073013Member" xlink:to="ck0001378872_S000073013Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000073014Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000073014Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000073014Member_lbl" xml:lang="en-US">Invesco ESG NASDAQ Next Gen 100 ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000073014Member" xlink:to="ck0001378872_S000073014Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000074294Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000074294Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000074294Member_lbl" xml:lang="en-US">Invesco ESG S&amp;P 500 Equal Weight ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000074294Member" xlink:to="ck0001378872_S000074294Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000019225Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000019225Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000019225Member_lbl" xml:lang="en-US">Invesco Equal Weight 0-30 Year Treasury ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000019225Member" xlink:to="ck0001378872_S000019225Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000034530Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000034530Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000034530Member_lbl" xml:lang="en-US">Invesco KBW Bank ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000034530Member" xlink:to="ck0001378872_S000034530Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000030361Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000030361Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000030361Member_lbl" xml:lang="en-US">Invesco KBW High Dividend Yield Financial ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000030361Member" xlink:to="ck0001378872_S000030361Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000030362Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000030362Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000030362Member_lbl" xml:lang="en-US">Invesco KBW Premium Yield Equity REIT ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000030362Member" xlink:to="ck0001378872_S000030362Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000030363Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000030363Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000030363Member_lbl" xml:lang="en-US">Invesco KBW Property &amp; Casualty Insurance ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000030363Member" xlink:to="ck0001378872_S000030363Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000034533Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000034533Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000034533Member_lbl" xml:lang="en-US">Invesco KBW Regional Banking ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000034533Member" xlink:to="ck0001378872_S000034533Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000058746Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000058746Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000058746Member_lbl" xml:lang="en-US">Invesco MSCI USA ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000058746Member" xlink:to="ck0001378872_S000058746Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000069448Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000069448Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000069448Member_lbl" xml:lang="en-US">Invesco NASDAQ 100 ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000069448Member" xlink:to="ck0001378872_S000069448Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000072469Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000072469Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000072469Member_lbl" xml:lang="en-US">Invesco Nasdaq Biotechnology ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000072469Member" xlink:to="ck0001378872_S000072469Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000083070Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000083070Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000083070Member_lbl" xml:lang="en-US">Invesco Nasdaq Free Cash Flow Achievers ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000083070Member" xlink:to="ck0001378872_S000083070Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000077288Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000077288Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000077288Member_lbl" xml:lang="en-US">Invesco NASDAQ Future Gen 200 ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000077288Member" xlink:to="ck0001378872_S000077288Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000069449Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000069449Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000069449Member_lbl" xml:lang="en-US">Invesco NASDAQ Next Gen 100 ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000069449Member" xlink:to="ck0001378872_S000069449Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000072470Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000072470Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000072470Member_lbl" xml:lang="en-US">Invesco PHLX Semiconductor ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000072470Member" xlink:to="ck0001378872_S000072470Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000047524Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000047524Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000047524Member_lbl" xml:lang="en-US">Invesco Russell 1000 Equal Weight ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000047524Member" xlink:to="ck0001378872_S000047524Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000050156Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000050156Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000050156Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 Enhanced Value ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000050156Member" xlink:to="ck0001378872_S000050156Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000048721Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000048721Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000048721Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 ex-Rate Sensitive Low Volatility ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000048721Member" xlink:to="ck0001378872_S000048721Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000030963Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000030963Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000030963Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 High Beta ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000030963Member" xlink:to="ck0001378872_S000030963Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000083071Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000083071Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000083071Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 High Dividend Growers ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000083071Member" xlink:to="ck0001378872_S000083071Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000038520Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000038520Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000038520Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 High Dividend Low Volatility ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000038520Member" xlink:to="ck0001378872_S000038520Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000030967Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000030967Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000030967Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 Low Volatility ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000030967Member" xlink:to="ck0001378872_S000030967Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000058135Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000058135Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000058135Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 Minimum Variance ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000058135Member" xlink:to="ck0001378872_S000058135Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000050154Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000050154Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000050154Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 Momentum ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000050154Member" xlink:to="ck0001378872_S000050154Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000072318Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000072318Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000072318Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 QVM Multi-factor ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000072318Member" xlink:to="ck0001378872_S000072318Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000064593Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000064593Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000064593Member_lbl" xml:lang="en-US">Invesco S&amp;P 500 Revenue ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000064593Member" xlink:to="ck0001378872_S000064593Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000072319Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000072319Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000072319Member_lbl" xml:lang="en-US">Invesco S&amp;P MidCap 400 QVM Multi-factor ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000072319Member" xlink:to="ck0001378872_S000072319Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000064595Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000064595Member"/>     
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000064595Member" xlink:to="ck0001378872_S000064595Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000030966Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000030966Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000030966Member_lbl" xml:lang="en-US">Invesco S&amp;P MidCap Low Volatility ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000030966Member" xlink:to="ck0001378872_S000030966Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000084357Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000084357Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000084357Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap 600 GARP ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000084357Member" xlink:to="ck0001378872_S000084357Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000072320Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000072320Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000072320Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap 600 QVM Multi-factor ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000072320Member" xlink:to="ck0001378872_S000072320Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000064596Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000064596Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000064596Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap 600 Revenue ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000064596Member" xlink:to="ck0001378872_S000064596Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028294Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028294Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028294Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Consumer Discretionary ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028294Member" xlink:to="ck0001378872_S000028294Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028296Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028296Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028296Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Consumer Staples ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028296Member" xlink:to="ck0001378872_S000028296Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028297Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028297Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028297Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Energy ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028297Member" xlink:to="ck0001378872_S000028297Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028298Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028298Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028298Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Financials ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028298Member" xlink:to="ck0001378872_S000028298Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028299Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028299Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028299Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Health Care ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028299Member" xlink:to="ck0001378872_S000028299Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000055539Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000055539Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000055539Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap High Dividend Low Volatility ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000055539Member" xlink:to="ck0001378872_S000055539Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028300Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028300Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028300Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Industrials ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028300Member" xlink:to="ck0001378872_S000028300Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028301Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028301Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028301Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Information Technology ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028301Member" xlink:to="ck0001378872_S000028301Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000030965Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000030965Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000030965Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Low Volatility ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000030965Member" xlink:to="ck0001378872_S000030965Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028302Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028302Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028302Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Materials ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028302Member" xlink:to="ck0001378872_S000028302Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000056849Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000056849Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000056849Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Quality ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000056849Member" xlink:to="ck0001378872_S000056849Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000028295Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000028295Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000028295Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Utilities &amp; Communication Services ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000028295Member" xlink:to="ck0001378872_S000028295Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000064597Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000064597Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000064597Member_lbl" xml:lang="en-US">Invesco S&amp;P Ultra Dividend Revenue ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000064597Member" xlink:to="ck0001378872_S000064597Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000060822Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000060822Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000060822Member_lbl" xml:lang="en-US">Invesco Solar ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000060822Member" xlink:to="ck0001378872_S000060822Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000019411Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000019411Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000019411Member_lbl" xml:lang="en-US">Invesco California AMT-Free Municipal Bond ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000019411Member" xlink:to="ck0001378872_S000019411Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000027370Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000027370Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000027370Member_lbl" xml:lang="en-US">Invesco CEF Income Composite ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000027370Member" xlink:to="ck0001378872_S000027370Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000019521Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000019521Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000019521Member_lbl" xml:lang="en-US">Invesco Floating Rate Municipal Income ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000019521Member" xlink:to="ck0001378872_S000019521Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000019230Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000019230Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000019230Member_lbl" xml:lang="en-US">Invesco Fundamental High Yield Corporate Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000019230Member" xlink:to="ck0001378872_S000019230Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000033429Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000033429Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000033429Member_lbl" xml:lang="en-US">Invesco Fundamental Investment Grade Corporate Bond ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000033429Member" xlink:to="ck0001378872_S000033429Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000019245Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000019245Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000019245Member_lbl" xml:lang="en-US">Invesco National AMT-Free Municipal Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000019245Member" xlink:to="ck0001378872_S000019245Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000019412Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000019412Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000019412Member_lbl" xml:lang="en-US">Invesco New York AMT-Free Municipal Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000019412Member" xlink:to="ck0001378872_S000019412Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000019228Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000019228Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000019228Member_lbl" xml:lang="en-US">Invesco Preferred ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000019228Member" xlink:to="ck0001378872_S000019228Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000031053Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000031053Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000031053Member_lbl" xml:lang="en-US">Invesco Senior Loan ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000031053Member" xlink:to="ck0001378872_S000031053Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000055054Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000055054Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000055054Member_lbl" xml:lang="en-US">Invesco Short Term Treasury ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000055054Member" xlink:to="ck0001378872_S000055054Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000019246Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000019246Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000019246Member_lbl" xml:lang="en-US">Invesco Taxable Municipal Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000019246Member" xlink:to="ck0001378872_S000019246Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_S000045020Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_S000045020Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_S000045020Member_lbl" xml:lang="en-US">Invesco Variable Rate Preferred ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_S000045020Member" xlink:to="ck0001378872_S000045020Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000116012Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000116012Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000116012Member_lbl" xml:lang="en-US">Invesco Dorsey Wright SmallCap Momentum ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000116012Member" xlink:to="ck0001378872_C000116012Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000229782Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000229782Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000229782Member_lbl" xml:lang="en-US">Invesco ESG NASDAQ 100 ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000229782Member" xlink:to="ck0001378872_C000229782Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000229783Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000229783Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000229783Member_lbl" xml:lang="en-US">Invesco ESG NASDAQ Next Gen 100 ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000229783Member" xlink:to="ck0001378872_C000229783Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000231951Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000231951Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000231951Member_lbl" xml:lang="en-US">Invesco ESG S&amp;P 500 Equal Weight ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000231951Member" xlink:to="ck0001378872_C000231951Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000053046Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000053046Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000053046Member_lbl" xml:lang="en-US">Invesco Equal Weight 0-30 Year Treasury ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000053046Member" xlink:to="ck0001378872_C000053046Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000106122Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000106122Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000106122Member_lbl" xml:lang="en-US">Invesco KBW Bank ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000106122Member" xlink:to="ck0001378872_C000106122Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000093357Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000093357Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000093357Member_lbl" xml:lang="en-US">Invesco KBW High Dividend Yield Financial ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000093357Member" xlink:to="ck0001378872_C000093357Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000093358Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000093358Member"/>     
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000192788Member" xlink:to="ck0001378872_C000192788Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000228754Member" xlink:to="ck0001378872_C000228754Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000246583Member" xlink:to="ck0001378872_C000246583Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000237581Member" xlink:to="ck0001378872_C000237581Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000221653Member" xlink:to="ck0001378872_C000221653Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000228755Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000228755Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000228755Member_lbl" xml:lang="en-US">Invesco PHLX Semiconductor ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000228755Member" xlink:to="ck0001378872_C000228755Member_lbl"/>    
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000149243Member_lbl" xml:lang="en-US">Invesco Russell 1000 Equal Weight ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000149243Member" xlink:to="ck0001378872_C000149243Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000158245Member" xlink:to="ck0001378872_C000158245Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000095998Member" xlink:to="ck0001378872_C000095998Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000246584Member" xlink:to="ck0001378872_C000246584Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000096002Member" xlink:to="ck0001378872_C000096002Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000209110Member" xlink:to="ck0001378872_C000209110Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000209112Member" xlink:to="ck0001378872_C000209112Member_lbl"/>    
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000248728Member" xlink:to="ck0001378872_C000248728Member_lbl"/>    
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    <loc xlink:type="locator" xlink:label="ck0001378872_C000180525Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000180525Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000180525Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Quality ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000180525Member" xlink:to="ck0001378872_C000180525Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000086470Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000086470Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000086470Member_lbl" xml:lang="en-US">Invesco S&amp;P SmallCap Utilities &amp; Communication Services ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000086470Member" xlink:to="ck0001378872_C000086470Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000209114Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000209114Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000209114Member_lbl" xml:lang="en-US">Invesco S&amp;P Ultra Dividend Revenue ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000209114Member" xlink:to="ck0001378872_C000209114Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000197638Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000197638Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000197638Member_lbl" xml:lang="en-US">Invesco Solar ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000197638Member" xlink:to="ck0001378872_C000197638Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000053967Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000053967Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000053967Member_lbl" xml:lang="en-US">Invesco California AMT-Free Municipal Bond ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000053967Member" xlink:to="ck0001378872_C000053967Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000082591Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000082591Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000082591Member_lbl" xml:lang="en-US">Invesco CEF Income Composite ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000082591Member" xlink:to="ck0001378872_C000082591Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000054223Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000054223Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000054223Member_lbl" xml:lang="en-US">Invesco Floating Rate Municipal Income ETF</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000054223Member" xlink:to="ck0001378872_C000054223Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000053051Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000053051Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000053051Member_lbl" xml:lang="en-US">Invesco Fundamental High Yield Corporate Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000053051Member" xlink:to="ck0001378872_C000053051Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000102793Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000102793Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000102793Member_lbl" xml:lang="en-US">Invesco Fundamental Investment Grade Corporate Bond ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000102793Member" xlink:to="ck0001378872_C000102793Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000053071Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000053071Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000053071Member_lbl" xml:lang="en-US">Invesco National AMT-Free Municipal Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000053071Member" xlink:to="ck0001378872_C000053071Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000053968Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000053968Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000053968Member_lbl" xml:lang="en-US">Invesco New York AMT-Free Municipal Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000053968Member" xlink:to="ck0001378872_C000053968Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000053049Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000053049Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000053049Member_lbl" xml:lang="en-US">Invesco Preferred ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000053049Member" xlink:to="ck0001378872_C000053049Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000096299Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000096299Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000096299Member_lbl" xml:lang="en-US">Invesco Senior Loan ETF</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000096299Member" xlink:to="ck0001378872_C000096299Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000173134Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000173134Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000173134Member_lbl" xml:lang="en-US">Invesco Short Term Treasury ETF</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000173134Member" xlink:to="ck0001378872_C000173134Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000053072Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000053072Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000053072Member_lbl" xml:lang="en-US">Invesco Taxable Municipal Bond ETF</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000053072Member" xlink:to="ck0001378872_C000053072Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_C000139641Member" xlink:href="ck0001378872-20240831.xsd#ck0001378872_C000139641Member"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_C000139641Member_lbl" xml:lang="en-US">Invesco Variable Rate Preferred ETF</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_C000139641Member" xlink:to="ck0001378872_C000139641Member_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_MarketRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MarketRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MarketRiskMember_lbl" xml:lang="en-US">Market Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MarketRiskMember" xlink:to="ck0001378872_MarketRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_IndexRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_IndexRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_IndexRiskMember_lbl" xml:lang="en-US">Index Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_IndexRiskMember" xlink:to="ck0001378872_IndexRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_SmallCapitalizationCompanyRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_SmallCapitalizationCompanyRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_SmallCapitalizationCompanyRiskMember_lbl" xml:lang="en-US">Small-Capitalization Company Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_SmallCapitalizationCompanyRiskMember" xlink:to="ck0001378872_SmallCapitalizationCompanyRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_EquityRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_EquityRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_EquityRiskMember_lbl" xml:lang="en-US">Equity Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_EquityRiskMember" xlink:to="ck0001378872_EquityRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_IndustryConcentrationRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_IndustryConcentrationRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_IndustryConcentrationRiskMember_lbl" xml:lang="en-US">Industry Concentration Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_IndustryConcentrationRiskMember" xlink:to="ck0001378872_IndustryConcentrationRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_IndustrialsSectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_IndustrialsSectorRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_IndustrialsSectorRiskMember_lbl" xml:lang="en-US">Industrials Sector Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_IndustrialsSectorRiskMember" xlink:to="ck0001378872_IndustrialsSectorRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_IssuerSpecificChangesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_IssuerSpecificChangesRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_IssuerSpecificChangesRiskMember_lbl" xml:lang="en-US">Issuer-Specific Changes Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_IssuerSpecificChangesRiskMember" xlink:to="ck0001378872_IssuerSpecificChangesRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_PortfolioTurnoverRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_PortfolioTurnoverRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_PortfolioTurnoverRiskMember_lbl" xml:lang="en-US">Portfolio Turnover Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_PortfolioTurnoverRiskMember" xlink:to="ck0001378872_PortfolioTurnoverRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_NonCorrelationRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_NonCorrelationRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_NonCorrelationRiskMember_lbl" xml:lang="en-US">Non-Correlation Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_NonCorrelationRiskMember" xlink:to="ck0001378872_NonCorrelationRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_AuthorizedParticipantConcentrationRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_AuthorizedParticipantConcentrationRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_AuthorizedParticipantConcentrationRiskMember_lbl" xml:lang="en-US">Authorized Participant Concentration Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_AuthorizedParticipantConcentrationRiskMember" xlink:to="ck0001378872_AuthorizedParticipantConcentrationRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_MarketTradingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MarketTradingRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MarketTradingRiskMember_lbl" xml:lang="en-US">Market Trading Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MarketTradingRiskMember" xlink:to="ck0001378872_MarketTradingRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_OperationalRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_OperationalRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_OperationalRiskMember_lbl" xml:lang="en-US">Operational Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_OperationalRiskMember" xlink:to="ck0001378872_OperationalRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_SharesMayTradeAtPricesDifferentThanNAVMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_SharesMayTradeAtPricesDifferentThanNAVMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_SharesMayTradeAtPricesDifferentThanNAVMember_lbl" xml:lang="en-US">Shares May Trade at Prices Different than NAV [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_SharesMayTradeAtPricesDifferentThanNAVMember" xlink:to="ck0001378872_SharesMayTradeAtPricesDifferentThanNAVMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_ESGInvestingStrategyRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ESGInvestingStrategyRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ESGInvestingStrategyRiskMember_lbl" xml:lang="en-US">ESG Investing Strategy Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ESGInvestingStrategyRiskMember" xlink:to="ck0001378872_ESGInvestingStrategyRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_InformationTechnologySectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_InformationTechnologySectorRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_InformationTechnologySectorRiskMember_lbl" xml:lang="en-US">Information Technology Sector Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_InformationTechnologySectorRiskMember" xlink:to="ck0001378872_InformationTechnologySectorRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_ADRRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ADRRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ADRRiskMember_lbl" xml:lang="en-US">ADR Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ADRRiskMember" xlink:to="ck0001378872_ADRRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_MidCapitalizationCompanyRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MidCapitalizationCompanyRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MidCapitalizationCompanyRiskMember_lbl" xml:lang="en-US">Mid-Capitalization Company Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MidCapitalizationCompanyRiskMember" xlink:to="ck0001378872_MidCapitalizationCompanyRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_ForeignInvestmentRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ForeignInvestmentRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ForeignInvestmentRiskMember_lbl" xml:lang="en-US">Foreign Investment Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ForeignInvestmentRiskMember" xlink:to="ck0001378872_ForeignInvestmentRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_IndexProviderRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_IndexProviderRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_IndexProviderRiskMember_lbl" xml:lang="en-US">Index Provider Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_IndexProviderRiskMember" xlink:to="ck0001378872_IndexProviderRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_IndexRebalancingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_IndexRebalancingRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_IndexRebalancingRiskMember_lbl" xml:lang="en-US">Index Rebalancing Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_IndexRebalancingRiskMember" xlink:to="ck0001378872_IndexRebalancingRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_USGovernmentObligationsRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_USGovernmentObligationsRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_USGovernmentObligationsRiskMember_lbl" xml:lang="en-US">U.S. Government Obligations Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_USGovernmentObligationsRiskMember" xlink:to="ck0001378872_USGovernmentObligationsRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_FixedIncomeSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_FixedIncomeSecuritiesRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_FixedIncomeSecuritiesRiskMember_lbl" xml:lang="en-US">Fixed-Income Securities Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_FixedIncomeSecuritiesRiskMember" xlink:to="ck0001378872_FixedIncomeSecuritiesRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_ChangingFixedIncomeMarketConditionsRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ChangingFixedIncomeMarketConditionsRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ChangingFixedIncomeMarketConditionsRiskMember_lbl" xml:lang="en-US">Changing Fixed-Income Market Conditions Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ChangingFixedIncomeMarketConditionsRiskMember" xlink:to="ck0001378872_ChangingFixedIncomeMarketConditionsRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_CallRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_CallRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_CallRiskMember_lbl" xml:lang="en-US">Call Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_CallRiskMember" xlink:to="ck0001378872_CallRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_ReinvestmentRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ReinvestmentRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ReinvestmentRiskMember_lbl" xml:lang="en-US">Reinvestment Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ReinvestmentRiskMember" xlink:to="ck0001378872_ReinvestmentRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_BankingIndustryRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_BankingIndustryRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_BankingIndustryRiskMember_lbl" xml:lang="en-US">Banking Industry Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_BankingIndustryRiskMember" xlink:to="ck0001378872_BankingIndustryRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_HighDividendPayingSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_HighDividendPayingSecuritiesRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_HighDividendPayingSecuritiesRiskMember_lbl" xml:lang="en-US">High Dividend Paying Securities Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_HighDividendPayingSecuritiesRiskMember" xlink:to="ck0001378872_HighDividendPayingSecuritiesRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_FinancialsSectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_FinancialsSectorRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_FinancialsSectorRiskMember_lbl" xml:lang="en-US">Financials Sector Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_FinancialsSectorRiskMember" xlink:to="ck0001378872_FinancialsSectorRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_SmallAndMidCapitalizationCompanyRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_SmallAndMidCapitalizationCompanyRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_SmallAndMidCapitalizationCompanyRiskMember_lbl" xml:lang="en-US">Small- and Mid-Capitalization Company Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_SmallAndMidCapitalizationCompanyRiskMember" xlink:to="ck0001378872_SmallAndMidCapitalizationCompanyRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_BusinessDevelopmentCompanyBDCRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_BusinessDevelopmentCompanyBDCRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_BusinessDevelopmentCompanyBDCRiskMember_lbl" xml:lang="en-US">Business Development Company (&#8220;BDC&#8221;) Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_BusinessDevelopmentCompanyBDCRiskMember" xlink:to="ck0001378872_BusinessDevelopmentCompanyBDCRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_REITRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_REITRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_REITRiskMember_lbl" xml:lang="en-US">REIT Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_REITRiskMember" xlink:to="ck0001378872_REITRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_MortgageREITRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MortgageREITRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MortgageREITRiskMember_lbl" xml:lang="en-US">Mortgage REIT Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MortgageREITRiskMember" xlink:to="ck0001378872_MortgageREITRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_RealEstateSectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_RealEstateSectorRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_RealEstateSectorRiskMember_lbl" xml:lang="en-US">Real Estate Sector Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_RealEstateSectorRiskMember" xlink:to="ck0001378872_RealEstateSectorRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_InsuranceIndustryRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_InsuranceIndustryRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_InsuranceIndustryRiskMember_lbl" xml:lang="en-US">Insurance Industry Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_InsuranceIndustryRiskMember" xlink:to="ck0001378872_InsuranceIndustryRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_RegionalSmallAndMediumBankRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_RegionalSmallAndMediumBankRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_RegionalSmallAndMediumBankRiskMember_lbl" xml:lang="en-US">Regional, Small and Medium Bank Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_RegionalSmallAndMediumBankRiskMember" xlink:to="ck0001378872_RegionalSmallAndMediumBankRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_PharmaceuticalsIndustryRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_PharmaceuticalsIndustryRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_PharmaceuticalsIndustryRiskMember_lbl" xml:lang="en-US">Pharmaceuticals Industry Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_PharmaceuticalsIndustryRiskMember" xlink:to="ck0001378872_PharmaceuticalsIndustryRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_BiotechnologyIndustryRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_BiotechnologyIndustryRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_BiotechnologyIndustryRiskMember_lbl" xml:lang="en-US">Biotechnology Industry Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_BiotechnologyIndustryRiskMember" xlink:to="ck0001378872_BiotechnologyIndustryRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_FreeCashFlowInvestingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_FreeCashFlowInvestingRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_FreeCashFlowInvestingRiskMember_lbl" xml:lang="en-US">Free Cash Flow Investing Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_FreeCashFlowInvestingRiskMember" xlink:to="ck0001378872_FreeCashFlowInvestingRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_HealthCareSectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_HealthCareSectorRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_HealthCareSectorRiskMember_lbl" xml:lang="en-US">Health Care Sector Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_HealthCareSectorRiskMember" xlink:to="ck0001378872_HealthCareSectorRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_ThirdPartyDataRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ThirdPartyDataRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ThirdPartyDataRiskMember_lbl" xml:lang="en-US">Third-Party Data Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ThirdPartyDataRiskMember" xlink:to="ck0001378872_ThirdPartyDataRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_SemiconductorsIndustryRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_SemiconductorsIndustryRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_SemiconductorsIndustryRiskMember_lbl" xml:lang="en-US">Semiconductors Industry Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_SemiconductorsIndustryRiskMember" xlink:to="ck0001378872_SemiconductorsIndustryRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_ForeignExposureRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ForeignExposureRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ForeignExposureRiskMember_lbl" xml:lang="en-US">Foreign Exposure Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ForeignExposureRiskMember" xlink:to="ck0001378872_ForeignExposureRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_ValueInvestingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ValueInvestingRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ValueInvestingRiskMember_lbl" xml:lang="en-US">Value Investing Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ValueInvestingRiskMember" xlink:to="ck0001378872_ValueInvestingRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_BetaRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_BetaRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_BetaRiskMember_lbl" xml:lang="en-US">Beta Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_BetaRiskMember" xlink:to="ck0001378872_BetaRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_MomentumInvestingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MomentumInvestingRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MomentumInvestingRiskMember_lbl" xml:lang="en-US">Momentum Investing Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MomentumInvestingRiskMember" xlink:to="ck0001378872_MomentumInvestingRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_MultifactorInvestingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MultifactorInvestingRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MultifactorInvestingRiskMember_lbl" xml:lang="en-US">Multifactor Investing Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MultifactorInvestingRiskMember" xlink:to="ck0001378872_MultifactorInvestingRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_QualityInvestingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_QualityInvestingRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_QualityInvestingRiskMember_lbl" xml:lang="en-US">Quality Investing Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_QualityInvestingRiskMember" xlink:to="ck0001378872_QualityInvestingRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_GrowthInvestingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_GrowthInvestingRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_GrowthInvestingRiskMember_lbl" xml:lang="en-US">Growth Investing Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_GrowthInvestingRiskMember" xlink:to="ck0001378872_GrowthInvestingRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_ConsumerDiscretionarySectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ConsumerDiscretionarySectorRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ConsumerDiscretionarySectorRiskMember_lbl" xml:lang="en-US">Consumer Discretionary Sector Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ConsumerDiscretionarySectorRiskMember" xlink:to="ck0001378872_ConsumerDiscretionarySectorRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_ConsumerStaplesSectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ConsumerStaplesSectorRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ConsumerStaplesSectorRiskMember_lbl" xml:lang="en-US">Consumer Staples Sector Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ConsumerStaplesSectorRiskMember" xlink:to="ck0001378872_ConsumerStaplesSectorRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_EnergySectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_EnergySectorRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_EnergySectorRiskMember_lbl" xml:lang="en-US">Energy Sector Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_EnergySectorRiskMember" xlink:to="ck0001378872_EnergySectorRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_MaterialsSectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MaterialsSectorRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MaterialsSectorRiskMember_lbl" xml:lang="en-US">Materials Sector Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MaterialsSectorRiskMember" xlink:to="ck0001378872_MaterialsSectorRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_CommunicationServicesSectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_CommunicationServicesSectorRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_CommunicationServicesSectorRiskMember_lbl" xml:lang="en-US">Communication Services Sector Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_CommunicationServicesSectorRiskMember" xlink:to="ck0001378872_CommunicationServicesSectorRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_UtilitiesSectorRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_UtilitiesSectorRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_UtilitiesSectorRiskMember_lbl" xml:lang="en-US">Utilities Sector Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_UtilitiesSectorRiskMember" xlink:to="ck0001378872_UtilitiesSectorRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_DividendPayingSecurityRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_DividendPayingSecurityRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_DividendPayingSecurityRiskMember_lbl" xml:lang="en-US">Dividend Paying Security Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_DividendPayingSecurityRiskMember" xlink:to="ck0001378872_DividendPayingSecurityRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_SolarIndustryRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_SolarIndustryRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_SolarIndustryRiskMember_lbl" xml:lang="en-US">Solar Industry Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_SolarIndustryRiskMember" xlink:to="ck0001378872_SolarIndustryRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_MicroCapitalizationCompanyRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MicroCapitalizationCompanyRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MicroCapitalizationCompanyRiskMember_lbl" xml:lang="en-US">Micro-Capitalization Company Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MicroCapitalizationCompanyRiskMember" xlink:to="ck0001378872_MicroCapitalizationCompanyRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_ChinaInvestmentRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ChinaInvestmentRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ChinaInvestmentRiskMember_lbl" xml:lang="en-US">China Investment Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ChinaInvestmentRiskMember" xlink:to="ck0001378872_ChinaInvestmentRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_EmergingMarketsInvestmentRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_EmergingMarketsInvestmentRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_EmergingMarketsInvestmentRiskMember_lbl" xml:lang="en-US">Emerging Markets Investment Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_EmergingMarketsInvestmentRiskMember" xlink:to="ck0001378872_EmergingMarketsInvestmentRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_ADRAndGDRRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ADRAndGDRRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ADRAndGDRRiskMember_lbl" xml:lang="en-US">ADR and GDR Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ADRAndGDRRiskMember" xlink:to="ck0001378872_ADRAndGDRRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_CurrencyRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_CurrencyRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_CurrencyRiskMember_lbl" xml:lang="en-US">Currency Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_CurrencyRiskMember" xlink:to="ck0001378872_CurrencyRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_ValuationRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ValuationRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ValuationRiskMember_lbl" xml:lang="en-US">Valuation Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ValuationRiskMember" xlink:to="ck0001378872_ValuationRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_ValuationTimeRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ValuationTimeRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ValuationTimeRiskMember_lbl" xml:lang="en-US">Valuation Time Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ValuationTimeRiskMember" xlink:to="ck0001378872_ValuationTimeRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_CaliforniaMunicipalSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_CaliforniaMunicipalSecuritiesRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_CaliforniaMunicipalSecuritiesRiskMember_lbl" xml:lang="en-US">California Municipal Securities Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_CaliforniaMunicipalSecuritiesRiskMember" xlink:to="ck0001378872_CaliforniaMunicipalSecuritiesRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_MunicipalSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MunicipalSecuritiesRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MunicipalSecuritiesRiskMember_lbl" xml:lang="en-US">Municipal Securities Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MunicipalSecuritiesRiskMember" xlink:to="ck0001378872_MunicipalSecuritiesRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_MunicipalInsuranceRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MunicipalInsuranceRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MunicipalInsuranceRiskMember_lbl" xml:lang="en-US">Municipal Insurance Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MunicipalInsuranceRiskMember" xlink:to="ck0001378872_MunicipalInsuranceRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_StateSpecificAndUSTerritoriesConcentrationRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_StateSpecificAndUSTerritoriesConcentrationRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_StateSpecificAndUSTerritoriesConcentrationRiskMember_lbl" xml:lang="en-US">State-Specific and U.S. Territories&apos; Concentration Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_StateSpecificAndUSTerritoriesConcentrationRiskMember" xlink:to="ck0001378872_StateSpecificAndUSTerritoriesConcentrationRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_TaxRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_TaxRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_TaxRiskMember_lbl" xml:lang="en-US">Tax Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_TaxRiskMember" xlink:to="ck0001378872_TaxRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_SamplingRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_SamplingRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_SamplingRiskMember_lbl" xml:lang="en-US">Sampling Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_SamplingRiskMember" xlink:to="ck0001378872_SamplingRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_RisksOfInvestingInClosedEndFundsMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_RisksOfInvestingInClosedEndFundsMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_RisksOfInvestingInClosedEndFundsMember_lbl" xml:lang="en-US">Risks of Investing in Closed-End Funds [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_RisksOfInvestingInClosedEndFundsMember" xlink:to="ck0001378872_RisksOfInvestingInClosedEndFundsMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_FundOfFundsRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_FundOfFundsRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_FundOfFundsRiskMember_lbl" xml:lang="en-US">Fund of Funds Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_FundOfFundsRiskMember" xlink:to="ck0001378872_FundOfFundsRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_NonInvestmentGradeSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_NonInvestmentGradeSecuritiesRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_NonInvestmentGradeSecuritiesRiskMember_lbl" xml:lang="en-US">Non-Investment Grade Securities Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_NonInvestmentGradeSecuritiesRiskMember" xlink:to="ck0001378872_NonInvestmentGradeSecuritiesRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_AntiTakeoverProvisionsRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_AntiTakeoverProvisionsRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_AntiTakeoverProvisionsRiskMember_lbl" xml:lang="en-US">Anti-Takeover Provisions Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_AntiTakeoverProvisionsRiskMember" xlink:to="ck0001378872_AntiTakeoverProvisionsRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_CommodityPoolRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_CommodityPoolRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_CommodityPoolRiskMember_lbl" xml:lang="en-US">Commodity Pool Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_CommodityPoolRiskMember" xlink:to="ck0001378872_CommodityPoolRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_CounterpartyRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_CounterpartyRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_CounterpartyRiskMember_lbl" xml:lang="en-US">Counterparty Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_CounterpartyRiskMember" xlink:to="ck0001378872_CounterpartyRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_DerivativesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_DerivativesRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_DerivativesRiskMember_lbl" xml:lang="en-US">Derivatives Risk [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_DerivativesRiskMember" xlink:to="ck0001378872_DerivativesRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_ForeignFixedIncomeInvestmentRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_ForeignFixedIncomeInvestmentRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_ForeignFixedIncomeInvestmentRiskMember_lbl" xml:lang="en-US">Foreign Fixed-Income Investment Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_ForeignFixedIncomeInvestmentRiskMember" xlink:to="ck0001378872_ForeignFixedIncomeInvestmentRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_LeverageRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_LeverageRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_LeverageRiskMember_lbl" xml:lang="en-US">Leverage Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_LeverageRiskMember" xlink:to="ck0001378872_LeverageRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_LiquidityRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_LiquidityRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_LiquidityRiskMember_lbl" xml:lang="en-US">Liquidity Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_LiquidityRiskMember" xlink:to="ck0001378872_LiquidityRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_MortgageBackedAndAssetBackedSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_MortgageBackedAndAssetBackedSecuritiesRiskMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_MortgageBackedAndAssetBackedSecuritiesRiskMember_lbl" xml:lang="en-US">Mortgage-Backed and Asset-Backed Securities Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_MortgageBackedAndAssetBackedSecuritiesRiskMember" xlink:to="ck0001378872_MortgageBackedAndAssetBackedSecuritiesRiskMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_OptionsRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_OptionsRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_OptionsRiskMember_lbl" xml:lang="en-US">Options Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_OptionsRiskMember" xlink:to="ck0001378872_OptionsRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_SeniorLoansRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_SeniorLoansRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_SeniorLoansRiskMember_lbl" xml:lang="en-US">Senior Loans Risk [Member]</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_SeniorLoansRiskMember" xlink:to="ck0001378872_SeniorLoansRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_VariableRateDemandObligationsRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_VariableRateDemandObligationsRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_VariableRateDemandObligationsRiskMember_lbl" xml:lang="en-US">Variable Rate Demand Obligations Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_VariableRateDemandObligationsRiskMember" xlink:to="ck0001378872_VariableRateDemandObligationsRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_CashTransactionRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_CashTransactionRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_CashTransactionRiskMember_lbl" xml:lang="en-US">Cash Transaction Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_CashTransactionRiskMember" xlink:to="ck0001378872_CashTransactionRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_Rule144ASecuritiesAndOtherExemptSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_Rule144ASecuritiesAndOtherExemptSecuritiesRiskMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_Rule144ASecuritiesAndOtherExemptSecuritiesRiskMember_lbl" xml:lang="en-US">Rule 144A Securities and Other Exempt Securities Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_Rule144ASecuritiesAndOtherExemptSecuritiesRiskMember" xlink:to="ck0001378872_Rule144ASecuritiesAndOtherExemptSecuritiesRiskMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_NewYorkMunicipalSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_NewYorkMunicipalSecuritiesRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_NewYorkMunicipalSecuritiesRiskMember_lbl" xml:lang="en-US">New York Municipal Securities Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_NewYorkMunicipalSecuritiesRiskMember" xlink:to="ck0001378872_NewYorkMunicipalSecuritiesRiskMember_lbl"/>    
    <loc xlink:type="locator" xlink:label="ck0001378872_PreferredSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_PreferredSecuritiesRiskMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_PreferredSecuritiesRiskMember_lbl" xml:lang="en-US">Preferred Securities Risk [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_PreferredSecuritiesRiskMember" xlink:to="ck0001378872_PreferredSecuritiesRiskMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_RiskOfInvestingInLoansMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_RiskOfInvestingInLoansMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_RiskOfInvestingInLoansMember_lbl" xml:lang="en-US">Risk of Investing in Loans [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_RiskOfInvestingInLoansMember" xlink:to="ck0001378872_RiskOfInvestingInLoansMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_RiskOfInvestingInLoansToNonUSBorrowersMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_RiskOfInvestingInLoansToNonUSBorrowersMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_RiskOfInvestingInLoansToNonUSBorrowersMember_lbl" xml:lang="en-US">Risk of Investing in Loans to Non-U.S. Borrowers [Member]</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_RiskOfInvestingInLoansToNonUSBorrowersMember" xlink:to="ck0001378872_RiskOfInvestingInLoansToNonUSBorrowersMember_lbl"/>     
    <loc xlink:type="locator" xlink:label="ck0001378872_RisksOfLoanAssignmentsAndParticipationsMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_RisksOfLoanAssignmentsAndParticipationsMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_RisksOfLoanAssignmentsAndParticipationsMember_lbl" xml:lang="en-US">Risks of Loan Assignments and Participations [Member]</label>   
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_RisksOfLoanAssignmentsAndParticipationsMember" xlink:to="ck0001378872_RisksOfLoanAssignmentsAndParticipationsMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_CollateralSecuritiesRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_CollateralSecuritiesRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_CollateralSecuritiesRiskMember_lbl" xml:lang="en-US">Collateral Securities Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_CollateralSecuritiesRiskMember" xlink:to="ck0001378872_CollateralSecuritiesRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_WhenIssuedAndDelayedDeliveryTransactionsRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_WhenIssuedAndDelayedDeliveryTransactionsRiskMember"/>   
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_WhenIssuedAndDelayedDeliveryTransactionsRiskMember_lbl" xml:lang="en-US">When Issued and Delayed Delivery Transactions Risk [Member]</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_WhenIssuedAndDelayedDeliveryTransactionsRiskMember" xlink:to="ck0001378872_WhenIssuedAndDelayedDeliveryTransactionsRiskMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_USTreasuryObligationsRiskMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_USTreasuryObligationsRiskMember"/>     
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_USTreasuryObligationsRiskMember_lbl" xml:lang="en-US">U.S. Treasury Obligations Risk [Member]</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_USTreasuryObligationsRiskMember" xlink:to="ck0001378872_USTreasuryObligationsRiskMember_lbl"/>    
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_Russell_2000_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl" xml:lang="en-US">Russell 2000&#174; Index (reflects no deduction for fees, expenses or taxes)</label>     
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_SP_SmallCap_600_Capped_Information_Technology_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl" xml:lang="en-US">S&amp;P SmallCap 600&#174; Capped Information Technology Index (reflects no deduction for fees, expenses or taxes)</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_index_SP_SmallCap_600_Capped_Information_Technology_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember" xlink:to="ck0001378872_index_SP_SmallCap_600_Capped_Information_Technology_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl"/> 
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_SP_SmallCap_600_Capped_Materials_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl" xml:lang="en-US">S&amp;P SmallCap 600&#174; Capped Materials Index (reflects no deduction for fees, expenses or taxes)</label>     
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_index_SP_SmallCap_600_Capped_Materials_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember" xlink:to="ck0001378872_index_SP_SmallCap_600_Capped_Materials_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl"/>     
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_SP_SmallCap_600_Quality_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl" xml:lang="en-US">S&amp;P SmallCap 600&#174; Quality Index (reflects no deduction for fees, expenses or taxes)</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_index_SP_SmallCap_600_Quality_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember" xlink:to="ck0001378872_index_SP_SmallCap_600_Quality_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl"/>  
    <loc xlink:type="locator" xlink:label="ck0001378872_index_SP_SmallCap_600_Capped_Utilities_Communication_Services_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_index_SP_SmallCap_600_Capped_Utilities_Communication_Services_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember"/>  
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_SP_SmallCap_600_Capped_Utilities_Communication_Services_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl" xml:lang="en-US">S&amp;P SmallCap 600&#174; Capped Utilities &amp; Communication Services Index (reflects no deduction for fees, expenses or taxes)</label>  
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_index_SP_SmallCap_600_Capped_Utilities_Communication_Services_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember" xlink:to="ck0001378872_index_SP_SmallCap_600_Capped_Utilities_Communication_Services_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl"/> 
    <loc xlink:type="locator" xlink:label="ck0001378872_index_SP_900_Dividend_RevenueWeighted_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_index_SP_900_Dividend_RevenueWeighted_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_SP_900_Dividend_RevenueWeighted_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl" xml:lang="en-US">S&amp;P 900&#174; Dividend Revenue-Weighted Index (reflects no deduction for fees, expenses or taxes)</label>    
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_index_SP_900_Dividend_RevenueWeighted_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember" xlink:to="ck0001378872_index_SP_900_Dividend_RevenueWeighted_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl"/>   
    <loc xlink:type="locator" xlink:label="ck0001378872_index_SP_900_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_index_SP_900_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember"/>    
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_SP_900_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl" xml:lang="en-US">S&amp;P 900&#174; Index (reflects no deduction for fees, expenses or taxes)</label>   
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    <loc xlink:type="locator" xlink:label="ck0001378872_index_MSCI_ACWI_Net_reflects_reinvested_dividends_net_of_withholding_taxes_but_reflects_no_deduction_for_fees_expenses_or_other_taxesMember" xlink:href="ck0001378872-20240831.xsd#ck0001378872_index_MSCI_ACWI_Net_reflects_reinvested_dividends_net_of_withholding_taxes_but_reflects_no_deduction_for_fees_expenses_or_other_taxesMember"/> 
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_MSCI_ACWI_Net_reflects_reinvested_dividends_net_of_withholding_taxes_but_reflects_no_deduction_for_fees_expenses_or_other_taxesMember_lbl" xml:lang="en-US">MSCI ACWI (Net) (reflects reinvested dividends net of withholding taxes but reflects no deduction for fees, expenses or other taxes)</label> 
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_index_MSCI_ACWI_Net_reflects_reinvested_dividends_net_of_withholding_taxes_but_reflects_no_deduction_for_fees_expenses_or_other_taxesMember" xlink:to="ck0001378872_index_MSCI_ACWI_Net_reflects_reinvested_dividends_net_of_withholding_taxes_but_reflects_no_deduction_for_fees_expenses_or_other_taxesMember_lbl"/>     
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ck0001378872_index_MSCI_World_Growth_Index_Net_reflects_reinvested_dividends_net_of_withholding_taxes_but_reflects_no_deduction_for_fees_expenses_or_other_taxesMember" xlink:to="ck0001378872_index_MSCI_World_Growth_Index_Net_reflects_reinvested_dividends_net_of_withholding_taxes_but_reflects_no_deduction_for_fees_expenses_or_other_taxesMember_lbl"/>   
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="ck0001378872_index_ICE_BofA_California_LongTerm_Core_Plus_Municipal_Securities_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember_lbl" xml:lang="en-US">ICE BofA California Long-Term Core Plus Municipal Securities Index (reflects no deduction for fees, expenses or taxes)</label>    
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