<?xml version="1.0" encoding="US-ASCII"?>  
<!-- Generated by CompSci Transform (tm) - http://www.compsciresources.com -->    
<!-- Created: Mon Mar 30 20:17:52 UTC 2026 -->  
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">  
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SeriesOnly" roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly"/>     
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly" roleURI="http://xbrl.sec.gov/oef/role/ClassOnly"/>   
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#RiskOnly" roleURI="http://xbrl.sec.gov/rr/role/RiskOnly"/>     
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default"/> 
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain"/>    
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension"/>     
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member"/>   
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all"/>   
  <definitionLink xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly" xlink:type="extended">    
    <loc xlink:type="locator" xlink:label="dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_S000102306Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_S000102306Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0001884021_S000102306Member" order="11" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_S000102300Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_S000102300Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0001884021_S000102300Member" order="12" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_S000102307Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_S000102307Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0001884021_S000102307Member" order="13" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_S000102301Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_S000102301Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0001884021_S000102301Member" order="14" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_S000102308Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_S000102308Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0001884021_S000102308Member" order="15" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_S000102302Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_S000102302Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0001884021_S000102302Member" order="16" xbrldt:closed="true"/>   
  </definitionLink>     
  <definitionLink xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="extended">   
    <loc xlink:type="locator" xlink:label="oef_ShareClassDomain" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain"/>    
    <loc xlink:type="locator" xlink:label="ck0001884021_C000272775Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_C000272775Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0001884021_C000272775Member" order="11" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_C000272769Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_C000272769Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0001884021_C000272769Member" order="12" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_C000272776Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_C000272776Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0001884021_C000272776Member" order="13" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_C000272770Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_C000272770Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0001884021_C000272770Member" order="14" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_C000272777Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_C000272777Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0001884021_C000272777Member" order="15" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_C000272771Member" xlink:href="ck0001884021-20260331.xsd#ck0001884021_C000272771Member"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0001884021_C000272771Member" order="16" xbrldt:closed="true"/>  
  </definitionLink>     
  <definitionLink xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly" xlink:type="extended"> 
    <loc xlink:type="locator" xlink:label="oef_AllRisksMember" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AllRisksMember"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_XLMLinkedInstrumentsAreRelativelyNewInvestmentsMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_XLMLinkedInstrumentsAreRelativelyNewInvestmentsMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_XLMLinkedInstrumentsAreRelativelyNewInvestmentsMember" order="11" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_XLMInvestingRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_XLMInvestingRiskMember"/>  
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_XLMInvestingRiskMember" order="12" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_XLMFuturesContractsRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_XLMFuturesContractsRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_XLMFuturesContractsRiskMember" order="13" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_LINKLinkedInstrumentsAreRelativelyNewInvestmentsMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_LINKLinkedInstrumentsAreRelativelyNewInvestmentsMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_LINKLinkedInstrumentsAreRelativelyNewInvestmentsMember" order="14" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_LINKInvestingRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_LINKInvestingRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_LINKInvestingRiskMember" order="15" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_LINKFuturesContractsRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_LINKFuturesContractsRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_LINKFuturesContractsRiskMember" order="16" xbrldt:closed="true"/>    
    <loc xlink:type="locator" xlink:label="ck0001884021_ADALinkedInstrumentsAreRelativelyNewInvestmentsMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ADALinkedInstrumentsAreRelativelyNewInvestmentsMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ADALinkedInstrumentsAreRelativelyNewInvestmentsMember" order="17" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_ADAInvestingRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ADAInvestingRiskMember"/>  
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ADAInvestingRiskMember" order="18" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_ADAFuturesContractsRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ADAFuturesContractsRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ADAFuturesContractsRiskMember" order="19" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_CostOfFuturesInvestmentRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_CostOfFuturesInvestmentRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_CostOfFuturesInvestmentRiskMember" order="20" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_XLMLinkedETPRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_XLMLinkedETPRiskMember"/>  
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_XLMLinkedETPRiskMember" order="21" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_LINKLinkedETPRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_LINKLinkedETPRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_LINKLinkedETPRiskMember" order="22" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_ADALinkedETPRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ADALinkedETPRiskMember"/>  
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ADALinkedETPRiskMember" order="23" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_SwapAgreementsRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_SwapAgreementsRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_SwapAgreementsRiskMember" order="24" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_AggressiveInvestmentRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_AggressiveInvestmentRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_AggressiveInvestmentRiskMember" order="25" xbrldt:closed="true"/>    
    <loc xlink:type="locator" xlink:label="ck0001884021_CompoundingRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_CompoundingRiskMember"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_CompoundingRiskMember" order="26" xbrldt:closed="true"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_LeveragedCorrelationRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_LeveragedCorrelationRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_LeveragedCorrelationRiskMember" order="27" xbrldt:closed="true"/>    
    <loc xlink:type="locator" xlink:label="ck0001884021_TargetExposureAndRebalancingRisksMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_TargetExposureAndRebalancingRisksMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_TargetExposureAndRebalancingRisksMember" order="28" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_RebalancingRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_RebalancingRiskMember"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_RebalancingRiskMember" order="29" xbrldt:closed="true"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_ManagementRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ManagementRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ManagementRiskMember" order="30" xbrldt:closed="true"/>    
    <loc xlink:type="locator" xlink:label="ck0001884021_DerivativesRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_DerivativesRiskMember"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_DerivativesRiskMember" order="31" xbrldt:closed="true"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_CounterpartyRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_CounterpartyRiskMember"/>  
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_CounterpartyRiskMember" order="32" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_InvestmentStrategyRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_InvestmentStrategyRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_InvestmentStrategyRiskMember" order="33" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_LiquidityRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_LiquidityRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_LiquidityRiskMember" order="34" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_CollateralInvestmentsRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_CollateralInvestmentsRiskMember"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_CollateralInvestmentsRiskMember" order="35" xbrldt:closed="true"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_ActiveManagementRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ActiveManagementRiskMember"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ActiveManagementRiskMember" order="36" xbrldt:closed="true"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_ActiveMarketRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ActiveMarketRiskMember"/>  
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ActiveMarketRiskMember" order="37" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_AssetConcentrationRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_AssetConcentrationRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_AssetConcentrationRiskMember" order="38" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_AuthorizedParticipantConcentrationRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_AuthorizedParticipantConcentrationRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_AuthorizedParticipantConcentrationRiskMember" order="39" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_CashTransactionRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_CashTransactionRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_CashTransactionRiskMember" order="40" xbrldt:closed="true"/>    
    <loc xlink:type="locator" xlink:label="ck0001884021_ClearingBrokerRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ClearingBrokerRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ClearingBrokerRiskMember" order="41" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_CommodityRegulatoryRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_CommodityRegulatoryRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_CommodityRegulatoryRiskMember" order="42" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="us-gaap_CreditRiskMember" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="us-gaap_CreditRiskMember" order="43" xbrldt:closed="true"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_CyberSecurityRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_CyberSecurityRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_CyberSecurityRiskMember" order="44" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_DebtSecuritiesRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_DebtSecuritiesRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_DebtSecuritiesRiskMember" order="45" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_FrequentTradingRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_FrequentTradingRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_FrequentTradingRiskMember" order="46" xbrldt:closed="true"/>    
    <loc xlink:type="locator" xlink:label="us-gaap_InterestRateRiskMember" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRateRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="us-gaap_InterestRateRiskMember" order="47" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_InvestmentCapacityRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_InvestmentCapacityRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_InvestmentCapacityRiskMember" order="48" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_LeverageRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_LeverageRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_LeverageRiskMember" order="49" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_MarketMakerRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_MarketMakerRiskMember"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_MarketMakerRiskMember" order="50" xbrldt:closed="true"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_NaturalDisasterEpidemicRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_NaturalDisasterEpidemicRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_NaturalDisasterEpidemicRiskMember" order="51" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_NewFundRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_NewFundRiskMember"/>  
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_NewFundRiskMember" order="52" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_NonDiversificationRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_NonDiversificationRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_NonDiversificationRiskMember" order="53" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_OperationalRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_OperationalRiskMember"/>     
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_OperationalRiskMember" order="54" xbrldt:closed="true"/>     
    <loc xlink:type="locator" xlink:label="ck0001884021_PremiumDiscountRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_PremiumDiscountRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_PremiumDiscountRiskMember" order="55" xbrldt:closed="true"/>    
    <loc xlink:type="locator" xlink:label="ck0001884021_ReverseRepurchaseAgreementsRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ReverseRepurchaseAgreementsRiskMember"/>  
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ReverseRepurchaseAgreementsRiskMember" order="56" xbrldt:closed="true"/> 
    <loc xlink:type="locator" xlink:label="ck0001884021_SubsidiaryInvestmentRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_SubsidiaryInvestmentRiskMember"/>   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_SubsidiaryInvestmentRiskMember" order="57" xbrldt:closed="true"/>    
    <loc xlink:type="locator" xlink:label="ck0001884021_TaxRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_TaxRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_TaxRiskMember" order="58" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_TradingIssuesRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_TradingIssuesRiskMember"/>    
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_TradingIssuesRiskMember" order="59" xbrldt:closed="true"/>  
    <loc xlink:type="locator" xlink:label="ck0001884021_ValuationRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_ValuationRiskMember"/> 
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_ValuationRiskMember" order="60" xbrldt:closed="true"/>   
    <loc xlink:type="locator" xlink:label="ck0001884021_VolatilityRiskMember" xlink:href="ck0001884021-20260331.xsd#ck0001884021_VolatilityRiskMember"/>   
<!-- [WMV6][ouGFy+QNjbpeqMzlM66I1oofPE9NB1yzCj8k8d/oEW80TOlcQlGU2Oht2v6Rt+18jBXr0X1WeQBbIVNoW6mlVEQUEJhOMPyW7OCCa3pH8tnfAFKz8nuaxA+U2BWjFClAbkdE7p3c3Is1Z8+zbvGPuWUXwIuaIeeoaujuYSlh86gKn9ddSweTYtoEgGTt9M39m7aZXxn9Wcg+YgtK9ir8PzkQn3KFFWOQwl7bzaeicAfTXBNVE6X/6NtUJEheZ+Nh/chdT+3r518FXLnLlLdhq6Q+FksBOU8pX/t05CkK2bBt5Pi1t2YHgY+vzJT17f6wYu4490jsVj5HcK+tkwxUMRPhSEQ/CKYq0J0Fk6ykErhtIJxXt2E=] CSR-->   
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0001884021_VolatilityRiskMember" order="61" xbrldt:closed="true"/>    
  </definitionLink>     
</linkbase>
