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  <xsd:element name="SaleOfStockOtherOfferingCosts" id="atch_SaleOfStockOtherOfferingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ConditionForFutureBusinessCombinationUseOfProceedsPercentage" id="atch_ConditionForFutureBusinessCombinationUseOfProceedsPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PublicPricePerShares" id="atch_PublicPricePerShares" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PublicShareValue" id="atch_PublicShareValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DissolutionExpenses" id="atch_DissolutionExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="WorkingCapitalDeficit" id="atch_WorkingCapitalDeficit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DrawingsFromWorkingCapitalLoan" id="atch_DrawingsFromWorkingCapitalLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="AdditionalWorkingCapitalLoan" id="atch_AdditionalWorkingCapitalLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="WorkingCapitalLoanNet" id="atch_WorkingCapitalLoanNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="OfferingCost" id="atch_OfferingCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PublicOfferingDetailsTable" id="atch_PublicOfferingDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PublicOfferingDetailsLineItems" id="atch_PublicOfferingDetailsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PrivatePlacementDetailsTable" id="atch_PrivatePlacementDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PrivatePlacementDetailsLineItems" id="atch_PrivatePlacementDetailsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PricePerWarrants" id="atch_PricePerWarrants" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionsDetailsTable" id="atch_RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfSharesOutstanding" id="atch_NumberOfSharesOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PricePerWarrants1" id="atch_PricePerWarrants1" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WorkingCapitalLoans" id="atch_WorkingCapitalLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AdditionalWorkingCapitalLoans" id="atch_AdditionalWorkingCapitalLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="WorkingCapitalLoanTotalNet" id="atch_WorkingCapitalLoanTotalNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="PrincipalBalanceAmount" id="atch_PrincipalBalanceAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="AdditionalPurchaseUnits" id="atch_AdditionalPurchaseUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PricePerPublicUnit" id="atch_PricePerPublicUnit" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ConsiderationAmount" id="atch_ConsiderationAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PurchasePrice" id="atch_PurchasePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NewPubcoCommonStockReceivable" id="atch_NewPubcoCommonStockReceivable" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NewPubcoCommonStockAmount" id="atch_NewPubcoCommonStockAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RevenueTargetsTerm" id="atch_RevenueTargetsTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommonStockWarrants" id="atch_CommonStockWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommonStockPrivateWarrants" id="atch_CommonStockPrivateWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AggregateSharesOfCommonStock" id="atch_AggregateSharesOfCommonStock" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AggregateOfWarrantsShares" id="atch_AggregateOfWarrantsShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PurchaseSharesOfCommonStock" id="atch_PurchaseSharesOfCommonStock" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExciseTaxLiabilitySharesRedeemedPercentage" id="atch_ExciseTaxLiabilitySharesRedeemedPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockholdersDeficitDetailsTable" id="atch_StockholdersDeficitDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WarrantsDetailsTable" id="atch_WarrantsDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IssuePricePerShares" id="atch_IssuePricePerShares" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ProceedsFromOtherEquityPercentage" id="atch_ProceedsFromOtherEquityPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WarrantPercentage" id="atch_WarrantPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IssuePricePerShare" id="atch_IssuePricePerShare" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MarketValuePercentage" id="atch_MarketValuePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WithdrawalsFromEmployeeTrustAccount" id="atch_WithdrawalsFromEmployeeTrustAccount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NonredemptionAgreementLiabilityShares" id="atch_NonredemptionAgreementLiabilityShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonredemptionOfCommonStockShares" id="atch_NonredemptionOfCommonStockShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AggregateShares" id="atch_AggregateShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AtlasClearMember" id="atch_AtlasClearMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AtlasFinTechMember" id="atch_AtlasFinTechMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationMember" id="atch_BusinessCombinationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ChardanQuantumLLCMember" id="atch_ChardanQuantumLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExciseTaxesPayableMember" id="atch_ExciseTaxesPayableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FounderSharesMember" id="atch_FounderSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InitialShareholdersMember" id="atch_InitialShareholdersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonRedeemableMember" id="atch_NonRedeemableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonRedemptionAgreementMember" id="atch_NonRedemptionAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonredeemableCommonStockMember" id="atch_NonredeemableCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PIPEDerivativesMember" id="atch_PIPEDerivativesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PrivateWarrantsMember" id="atch_PrivateWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PublicSharesMember" id="atch_PublicSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PublicWarrantsMember" id="atch_PublicWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="QuantumVenturesLLCMember" id="atch_QuantumVenturesLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RedeemableCommonStockMember" id="atch_RedeemableCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RedeemableMember" id="atch_RedeemableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SponsorMember" id="atch_SponsorMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LessAbstract" id="atch_LessAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WarrantLineItems" id="atch_WarrantLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxDetailsScheduleOfNetDeferredTaxAssetsLiabilityTable" id="atch_IncomeTaxDetailsScheduleOfNetDeferredTaxAssetsLiabilityTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxDetailsScheduleOfNetDeferredTaxAssetsLiabilityLineItem" id="atch_IncomeTaxDetailsScheduleOfNetDeferredTaxAssetsLiabilityLineItem" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxDetailsTable" id="atch_IncomeTaxDetailsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxDetailsLineItems" id="atch_IncomeTaxDetailsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AtlasclearIncMember" id="atch_AtlasclearIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="QuantumFintechAcquisitionCorpMember" id="atch_QuantumFintechAcquisitionCorpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AtlasclearHoldingsStockholdersMember" id="atch_AtlasclearHoldingsStockholdersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AtlasFintechMember" id="atch_AtlasFintechMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ChardanQuantumLlcMember" id="atch_ChardanQuantumLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="QuantumVenturesLlcMember" id="atch_QuantumVenturesLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WilsonDavisSellersMember" id="atch_WilsonDavisSellersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FunicularMember" id="atch_FunicularMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="QventLlcMember" id="atch_QventLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WarrantsIssuedInExchangeForPublicWarrantsToPurchaseQuantumCommonStockMember" id="atch_WarrantsIssuedInExchangeForPublicWarrantsToPurchaseQuantumCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WarrantsIssuedInExchangeForPrivateWarrantsToPurchaseQuantumCommonStockMember" id="atch_WarrantsIssuedInExchangeForPrivateWarrantsToPurchaseQuantumCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="QuantumCommonStockMember" id="atch_QuantumCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AffiliateOfSponsorMember" id="atch_AffiliateOfSponsorMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShortTermNotesMember" id="atch_ShortTermNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermNotesMember" id="atch_LongTermNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FunicularNoteMember" id="atch_FunicularNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ChardanNoteMember" id="atch_ChardanNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EarnOutSharesMaximumNumberOfSharesIssuable" id="atch_EarnOutSharesMaximumNumberOfSharesIssuable" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares" id="atch_ThresholdPeriodFromClosingToAchieveMilestonesConsideredForIssuanceOfEarnOutShares" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EarnOutSharesMaximumAmountOfSharesIssuable" id="atch_EarnOutSharesMaximumAmountOfSharesIssuable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="PeriodForMeasurementOfRevenueTargets" id="atch_PeriodForMeasurementOfRevenueTargets" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareExchangeRatio" id="atch_ShareExchangeRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TemporaryEquityStockRedeemedOrCalledDuringPeriodShares" id="atch_TemporaryEquityStockRedeemedOrCalledDuringPeriodShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TemporaryEquityStockRedeemedOrCalledDuringPeriodValue" id="atch_TemporaryEquityStockRedeemedOrCalledDuringPeriodValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfFounderSharesInstructedToBeReleasedFormEscrow" id="atch_NumberOfFounderSharesInstructedToBeReleasedFormEscrow" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BrokerDealerAcquisitionAgreementNumberOfAmendments" id="atch_BrokerDealerAcquisitionAgreementNumberOfAmendments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BrokerDealerAcquisitionAgreementReductionInTotalPurchasePricePayable" id="atch_BrokerDealerAcquisitionAgreementReductionInTotalPurchasePricePayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="BrokerDealerAcquisitionAgreementCashPayableAtWilsonDavisClosing" id="atch_BrokerDealerAcquisitionAgreementCashPayableAtWilsonDavisClosing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentInterestPayableInSharesAsPercentageOfTrailingSpecifiedTradingDayVolumeWeightedAverageSharePrice" id="atch_DebtInstrumentInterestPayableInSharesAsPercentageOfTrailingSpecifiedTradingDayVolumeWeightedAverageSharePrice" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentInterestPayableInSharesNumberOfTradingDaysOverWhichVolumeWeightedAverageSharePriceIsConsidered" id="atch_DebtInstrumentInterestPayableInSharesNumberOfTradingDaysOverWhichVolumeWeightedAverageSharePriceIsConsidered" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentConvertibleConversionRateAsPercentageOfTrailingSpecifiedTradingDayVolumeWeightedAverageSharePrice" id="atch_DebtInstrumentConvertibleConversionRateAsPercentageOfTrailingSpecifiedTradingDayVolumeWeightedAverageSharePrice" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentConvertibleConversionRateNumberOfTradingDaysOverWhichVolumeWeightedAverageSharePriceIsConsidered" id="atch_DebtInstrumentConvertibleConversionRateNumberOfTradingDaysOverWhichVolumeWeightedAverageSharePriceIsConsidered" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentConvertiblePeriod" id="atch_DebtInstrumentConvertiblePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentConvertibleConversionRateAsPercentageOfTrailingSpecifiedTradingDayVolumeWeightedAverageSharePriceIfEventOfDefaultOccursAndIsContinuing" id="atch_DebtInstrumentConvertibleConversionRateAsPercentageOfTrailingSpecifiedTradingDayVolumeWeightedAverageSharePriceIfEventOfDefaultOccursAndIsContinuing" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PeriodToFileRegistrationStatementWithSec" id="atch_PeriodToFileRegistrationStatementWithSec" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AggregateValueOfFounderSharesAgreedToTransfer" id="atch_AggregateValueOfFounderSharesAgreedToTransfer" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="NumberOfTradingDaysOverWhichVolumeWeightedAverageSharePriceOfCommonStockConsideredForDeterminationOfFounderSharesAgreedToTransfer" id="atch_NumberOfTradingDaysOverWhichVolumeWeightedAverageSharePriceOfCommonStockConsideredForDeterminationOfFounderSharesAgreedToTransfer" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfFounderSharesTransferred" id="atch_NumberOfFounderSharesTransferred" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MaximumNumberOfFounderSharesThatCanBeTransferred" id="atch_MaximumNumberOfFounderSharesThatCanBeTransferred" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentInterestRateInEventOfDefault" id="atch_DebtInstrumentInterestRateInEventOfDefault" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentConvertibleThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredForMonthlyAdjustmentsToConversionPrice" id="atch_DebtInstrumentConvertibleThresholdTradingDaysOverWhichVolumeWeightedAverageStockPriceConsideredForMonthlyAdjustmentsToConversionPrice" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentConvertibleConversionPriceFloor" id="atch_DebtInstrumentConvertibleConversionPriceFloor" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentRedemptionNumberOfDaysNotice" id="atch_DebtInstrumentRedemptionNumberOfDaysNotice" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentConvertibleThresholdMaximumPercentageOfOutstandingCommonStockAboveWhichStockholderApprovalIsRequired" id="atch_DebtInstrumentConvertibleThresholdMaximumPercentageOfOutstandingCommonStockAboveWhichStockholderApprovalIsRequired" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfWarrantsTransferred" id="atch_NumberOfWarrantsTransferred" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfDaysWithinWhichRegistrationStatementShouldBeDeclaredEffective" id="atch_NumberOfDaysWithinWhichRegistrationStatementShouldBeDeclaredEffective" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfOriginalPrincipalAmountOfNotesPayableUponDefaultOfFilingOrEffectingOfRegistrationStatementWithSec" id="atch_PercentageOfOriginalPrincipalAmountOfNotesPayableUponDefaultOfFilingOrEffectingOfRegistrationStatementWithSec" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="MarketingFeesPayableToUnderwritersWaivedInExchangeForNotesPayable" id="atch_MarketingFeesPayableToUnderwritersWaivedInExchangeForNotesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfYearsUpToWhichConvertedAmountFromDebtIsToBeHeldForPaymentOfInterest" id="atch_NumberOfYearsUpToWhichConvertedAmountFromDebtIsToBeHeldForPaymentOfInterest" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BeneficialOwnershipPercentage" id="atch_BeneficialOwnershipPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="MinimumPeriodForWhichRegistrationStatementWithSecIsSuspendedConsideredForIncreaseInInterestRateOnDebt" id="atch_MinimumPeriodForWhichRegistrationStatementWithSecIsSuspendedConsideredForIncreaseInInterestRateOnDebt" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncrementalWeeklyInterestRateIfRegistrationStatementIsNotFiledOrIsNotEffectiveOrTerminatedOrSuspended" id="atch_IncrementalWeeklyInterestRateIfRegistrationStatementIsNotFiledOrIsNotEffectiveOrTerminatedOrSuspended" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodSharesIssuedForSettlementOfObligations" id="atch_StockIssuedDuringPeriodSharesIssuedForSettlementOfObligations" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ObligationsSettledInShares" id="atch_ObligationsSettledInShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ChangeInFairValueOfPipeDerivativeLiabilitiesPercentage" id="atch_ChangeInFairValueOfPipeDerivativeLiabilitiesPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TransactionCostsWarrantsPercentage" id="atch_TransactionCostsWarrantsPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PenaltiesInterestInPercentage" id="atch_PenaltiesInterestInPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfShares" id="atch_PercentageOfShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="CommencementPeriodForPlacingSharesInEscrowAccount" id="atch_CommencementPeriodForPlacingSharesInEscrowAccount" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="First50PercentOfFounderSharesMember" id="atch_First50PercentOfFounderSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="Remaining50OfFounderSharesMember" id="atch_Remaining50OfFounderSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PeriodToPlaceSharesInEscrowAccountThresholdTradingDays" id="atch_PeriodToPlaceSharesInEscrowAccountThresholdTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PeriodToPlaceSharesInEscrowAccountThresholdConsecutiveTradingDays" id="atch_PeriodToPlaceSharesInEscrowAccountThresholdConsecutiveTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationExpense" id="atch_BusinessCombinationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="MarketingFeesPayableToUnderwritersAsPercentageOfAggregateGrossProceedsFromInitialPublicOffering" id="atch_MarketingFeesPayableToUnderwritersAsPercentageOfAggregateGrossProceedsFromInitialPublicOffering" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="MarketingFeesPayableToUnderwriters" id="atch_MarketingFeesPayableToUnderwriters" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="WarrantsAndRightsOutstandingExercisableTermFromClosingOfInitialPublicOffering" id="atch_WarrantsAndRightsOutstandingExercisableTermFromClosingOfInitialPublicOffering" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RedemptionPricePerWarrant" id="atch_RedemptionPricePerWarrant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ClassOfWarrantOrRightMaximumNumberOfDaysNoticeRequiredForRedemptionInWriting" id="atch_ClassOfWarrantOrRightMaximumNumberOfDaysNoticeRequiredForRedemptionInWriting" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ClassOfWarrantOrRightRedemptionStockPriceTrigger" id="atch_ClassOfWarrantOrRightRedemptionStockPriceTrigger" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ClassOfWarrantOrRightRedemptionThresholdTradingDays" id="atch_ClassOfWarrantOrRightRedemptionThresholdTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ClassOfWarrantOrRightRedemptionThresholdConsecutiveTradingDays" id="atch_ClassOfWarrantOrRightRedemptionThresholdConsecutiveTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfBasicAndDilutedNetIncomePerShareOfCommonStockTable" id="atch_ScheduleOfBasicAndDilutedNetIncomePerShareOfCommonStockTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfBasicAndDilutedNetIncomePerShareOfCommonStockLineItems" id="atch_ScheduleOfBasicAndDilutedNetIncomePerShareOfCommonStockLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfCompanysAssetsAndLiabilitiesThatAreMeasuredAtFairValueOnRecurringBasisTable" id="atch_ScheduleOfCompanysAssetsAndLiabilitiesThatAreMeasuredAtFairValueOnRecurringBasisTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfCompanysAssetsAndLiabilitiesThatAreMeasuredAtFairValueOnRecurringBasisLineItems" id="atch_ScheduleOfCompanysAssetsAndLiabilitiesThatAreMeasuredAtFairValueOnRecurringBasisLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SummaryOfSignificantAccountingPoliciesTable" id="atch_SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SummaryOfSignificantAccountingPoliciesLineItems" id="atch_SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DescriptionOfOrganizationAndBusinessOperationsTable" id="atch_DescriptionOfOrganizationAndBusinessOperationsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DescriptionOfOrganizationAndBusinessOperationsLineItems" id="atch_DescriptionOfOrganizationAndBusinessOperationsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DiscountForExpectedForfeiture" id="atch_DiscountForExpectedForfeiture" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FairValueAdjustmentOfNonRedemptionAgreementLiability" id="atch_FairValueAdjustmentOfNonRedemptionAgreementLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CashSegregatedUnderFederalRegulationsCustomersCurrent" id="atch_CashSegregatedUnderFederalRegulationsCustomersCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="CashSegregatedUnderProprietarySecuritiesAccountOfBrokerDealerCurrent" id="atch_CashSegregatedUnderProprietarySecuritiesAccountOfBrokerDealerCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ReceivableFromBrokerDealerAndClearingOrganizationCurrent" id="atch_ReceivableFromBrokerDealerAndClearingOrganizationCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ReceivablesFromCustomersCurrent" id="atch_ReceivablesFromCustomersCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="PrepaidExpenseOtherThanTaxesCurrent" id="atch_PrepaidExpenseOtherThanTaxesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="CashDepositsBrokerDealersAndClearingOrganizationsNoncurrent" id="atch_CashDepositsBrokerDealersAndClearingOrganizationsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="AccountsAndPayablesToOfficersOrDirectorsCurrent" id="atch_AccountsAndPayablesToOfficersOrDirectorsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AccountsPayableAndAccruedExpensesOtherThanPayablesToCustomersOfficersOrDirectorsCurrent" id="atch_AccountsPayableAndAccruedExpensesOtherThanPayablesToCustomersOfficersOrDirectorsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BrokerDealerPayableToOtherBrokerDealerAndClearingOrganizationCurrent" id="atch_BrokerDealerPayableToOtherBrokerDealerAndClearingOrganizationCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DeferredIncomeTaxLiabilitiesNetCurrent" id="atch_DeferredIncomeTaxLiabilitiesNetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="TradingAccountDepositNoncurrent" id="atch_TradingAccountDepositNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="VettingFeesIncome" id="atch_VettingFeesIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ClearingFeesIncome" id="atch_ClearingFeesIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncomeFromFeesChargedToCustomers" id="atch_IncomeFromFeesChargedToCustomers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="BankCharges" id="atch_BankCharges" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInCashDepositsWithClearingOrganizationsAndOtherBrokerDealers" id="atch_IncreaseDecreaseInCashDepositsWithClearingOrganizationsAndOtherBrokerDealers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInOperatingLeaseRightOfUseAsset" id="atch_IncreaseDecreaseInOperatingLeaseRightOfUseAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInAccountsPayableAndAccruedLiabilitiesOtherThanDueToOfficersAndDirectors" id="atch_IncreaseDecreaseInAccountsPayableAndAccruedLiabilitiesOtherThanDueToOfficersAndDirectors" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInCommissionsPayrollAndPayrollTaxesPayable" id="atch_IncreaseDecreaseInCommissionsPayrollAndPayrollTaxesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInStockLoan" id="atch_IncreaseDecreaseInStockLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsDisclosuresTextBlock" id="atch_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsDisclosuresTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BrokerDealerNetCapitalRequirementSecRegulationTextBlock" id="atch_BrokerDealerNetCapitalRequirementSecRegulationTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashReserveDepositRequired" id="atch_CashReserveDepositRequired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="CashReserveDepositLessThanAmountRequired" id="atch_CashReserveDepositLessThanAmountRequired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="CashReserveDepositInExcessOfAmountRequired" id="atch_CashReserveDepositInExcessOfAmountRequired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LossContingencyReductionInDamageAwarded" id="atch_LossContingencyReductionInDamageAwarded" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="LeaseForSaltLakeCityOfficeMember" id="atch_LeaseForSaltLakeCityOfficeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OfficeLeaseForDenverOfficeMember" id="atch_OfficeLeaseForDenverOfficeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsTable" id="atch_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsLineItems" id="atch_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis" id="atch_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsDomain" id="atch_CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CustomersTransactionsAndCreditBalancesMember" id="atch_CustomersTransactionsAndCreditBalancesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BrokerDealerTransactionsAndCreditBalancesMember" id="atch_BrokerDealerTransactionsAndCreditBalancesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WilsonDavisCoIncMember" id="atch_WilsonDavisCoIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RevenueFromVettingProcessingFees" id="atch_RevenueFromVettingProcessingFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="RevenueFromClearanceFees" id="atch_RevenueFromClearanceFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DataProcessingAndClearingCosts" id="atch_DataProcessingAndClearingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RegulatoryProfessionalFeesAndRelatedExpenses" id="atch_RegulatoryProfessionalFeesAndRelatedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="TransferFees" id="atch_TransferFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DerivativeGainLossOnConvertibleNoteDerivativeNet" id="atch_DerivativeGainLossOnConvertibleNoteDerivativeNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet" id="atch_DerivativeGainLossOnLongTermAndShortTermNoteDerivativeNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="FairValueAdjustmentOfNonRedemptionAgreement" id="atch_FairValueAdjustmentOfNonRedemptionAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FairValueAdjustmentOfEarnoutLiability" id="atch_FairValueAdjustmentOfEarnoutLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FairValueAdjustmentOfSubscriptionAgreement" id="atch_FairValueAdjustmentOfSubscriptionAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ReclassificationsOfTemporaryToPermanentEquityShares" id="atch_ReclassificationsOfTemporaryToPermanentEquityShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalFounderSharesTransferredAtClosingToNonRedemptionAgreementHolders" id="atch_AdjustmentsToAdditionalPaidInCapitalFounderSharesTransferredAtClosingToNonRedemptionAgreementHolders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalFounderSharesTransferredAtClosingConsiderationForBusinessCombination" id="atch_AdjustmentsToAdditionalPaidInCapitalFounderSharesTransferredAtClosingConsiderationForBusinessCombination" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodValueSettlementOfRelatedPartyAdvancesAndPromissoryNotes" id="atch_StockIssuedDuringPeriodValueSettlementOfRelatedPartyAdvancesAndPromissoryNotes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes" id="atch_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndPromissoryNotes" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalEarnoutSharesGrantedAsConsiderationForAssetAcquisition" id="atch_AdjustmentsToAdditionalPaidInCapitalEarnoutSharesGrantedAsConsiderationForAssetAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CashSegregatedCustomers" id="atch_CashSegregatedCustomers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="CashSegregatedProprietaryAccountsOfBrokerDealers" id="atch_CashSegregatedProprietaryAccountsOfBrokerDealers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FiniteLivedCustomerListsNet" id="atch_FiniteLivedCustomerListsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FiniteLivedDevelopedTechnologyAcquiredNet" id="atch_FiniteLivedDevelopedTechnologyAcquiredNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="SubscriptionPayableAssetNoncurrent" id="atch_SubscriptionPayableAssetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="AccountsAndPayablesToOfficersAndDirectorsCurrent" id="atch_AccountsAndPayablesToOfficersAndDirectorsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="CommissionsPayrollAndPayrollTaxesCurrent" id="atch_CommissionsPayrollAndPayrollTaxesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ShortTermMergerFinancingNetCurrent" id="atch_ShortTermMergerFinancingNetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ShortTermMergerFinancingNetNoncurrent" id="atch_ShortTermMergerFinancingNetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="EarnoutLiabilitiesNoncurrent" id="atch_EarnoutLiabilitiesNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="CalabreseConsultingLlcMember" id="atch_CalabreseConsultingLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CoSponsorsMember" id="atch_CoSponsorsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyLoanMember" id="atch_RelatedPartyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndNotes" id="atch_StockIssuedDuringPeriodSharesSettlementOfRelatedPartyAdvancesAndNotes" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyLiabilitiesSettledByIssuanceOfShares" id="atch_RelatedPartyLiabilitiesSettledByIssuanceOfShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="RelatedPartyReceivablesSettledByIssuanceOfShares" id="atch_RelatedPartyReceivablesSettledByIssuanceOfShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="StockOptionsExercisedRightToRedeemShares" id="atch_StockOptionsExercisedRightToRedeemShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RemainingBalanceOfTrustAccountUsedForBusinessCombination" id="atch_RemainingBalanceOfTrustAccountUsedForBusinessCombination" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SecuredConvertibleNoteMember" id="atch_SecuredConvertibleNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SubscriptionAgreementMember" id="atch_SubscriptionAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PromissoryNoteMember" id="atch_PromissoryNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SecuredConvertibleNoteWarrantsMember" id="atch_SecuredConvertibleNoteWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DeferredIncomeTaxLiabilityCurrent" id="atch_DeferredIncomeTaxLiabilityCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="StockIssuanceCostsRelatedToInitialPublicOffering" id="atch_StockIssuanceCostsRelatedToInitialPublicOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="StockIssuanceCosts" id="atch_StockIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInCommissionsAndPayrollTaxesPayable" id="atch_IncreaseDecreaseInCommissionsAndPayrollTaxesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ProceedsFromTrustAccountForWorkingCapitalPurposes" id="atch_ProceedsFromTrustAccountForWorkingCapitalPurposes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="MaximumNumberOfResaleShareRegistered" id="atch_MaximumNumberOfResaleShareRegistered" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ProceedsForTransactionCostFinanced" id="atch_ProceedsForTransactionCostFinanced" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="SharesIssuedToSettledAdvancesFromRelatedPartyAndNotesPayableRelatedParty" id="atch_SharesIssuedToSettledAdvancesFromRelatedPartyAndNotesPayableRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="TransactionCostSettledWithSubscriptionPayable" id="atch_TransactionCostSettledWithSubscriptionPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="FairValueOfEquityTreatedEarnoutInAssetAcquisition" id="atch_FairValueOfEquityTreatedEarnoutInAssetAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="FairValueOfSharesIssuedInAssetAcquisition" id="atch_FairValueOfSharesIssuedInAssetAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="FairValueOfLiabilityTreatedEarnoutInAssetAcquisition" id="atch_FairValueOfLiabilityTreatedEarnoutInAssetAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ShortTermNotesIssuedToShareholdersAcquisition" id="atch_ShortTermNotesIssuedToShareholdersAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="LongTermNotesIssuedToShareholdersAcquisition" id="atch_LongTermNotesIssuedToShareholdersAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="FairValueOfSharesTransferredToSecuredConvertibleNoteHolders" id="atch_FairValueOfSharesTransferredToSecuredConvertibleNoteHolders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="RedeemableSharesTransferredToPermanentEquity" id="atch_RedeemableSharesTransferredToPermanentEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="NonRedemptionAgreementReClassedToPermeantEquity" id="atch_NonRedemptionAgreementReClassedToPermeantEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="WilsonDavisMember" id="atch_WilsonDavisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationNumberOfAmendmentsToBrokerDealerAcquisitionAgreement" id="atch_BusinessCombinationNumberOfAmendmentsToBrokerDealerAcquisitionAgreement" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConversionTermAtOptionOfHolderAfterClosingDate" id="atch_ConversionTermAtOptionOfHolderAfterClosingDate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentConvertibleConversionRateAsPercentageOfTrailingSpecifiedTradingDayVolumeWeightedAverageSharePrice.IfEventOfDefaultOccursAndIsContinuing" id="atch_DebtInstrumentConvertibleConversionRateAsPercentageOfTrailingSpecifiedTradingDayVolumeWeightedAverageSharePrice.IfEventOfDefaultOccursAndIsContinuing" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TermToFileRegistrationStatementWithSec" id="atch_TermToFileRegistrationStatementWithSec" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TermWithinWhichAdditionalFounderSharesCanBeTransferred" id="atch_TermWithinWhichAdditionalFounderSharesCanBeTransferred" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashSegregated" id="atch_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashSegregated" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAccruedExpensesAndOtherCurrentLiabilities" id="atch_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAccruedExpensesAndOtherCurrentLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLeaseLiability" id="atch_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashDepositBdsAndClearingOrganizations" id="atch_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashDepositBdsAndClearingOrganizations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightToUseLeaseAssets" id="atch_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightToUseLeaseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLeaseLiability" id="atch_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTradingAccountDeposit" id="atch_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTradingAccountDeposit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetBeforeAllocationToIdentifiableIntangibleAssetsAndGoodwill" id="atch_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetBeforeAllocationToIdentifiableIntangibleAssetsAndGoodwill" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="AcquiredIndefiniteLivedIntangibleAssetsTermOfLicensesReplacementCosts" id="atch_AcquiredIndefiniteLivedIntangibleAssetsTermOfLicensesReplacementCosts" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcquiredIndefiniteLivedIntangibleAssetsEstimatedPercentageOfReplicationCost" id="atch_AcquiredIndefiniteLivedIntangibleAssetsEstimatedPercentageOfReplicationCost" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcquiredIndefiniteLivedIntangibleAssetsDevelopmentPeriod" id="atch_AcquiredIndefiniteLivedIntangibleAssetsDevelopmentPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcquiredIndefiniteLivedIntangibleAssetsPercentageOfAnnualRateOfReturn" id="atch_AcquiredIndefiniteLivedIntangibleAssetsPercentageOfAnnualRateOfReturn" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FairValueOfSharesTransferredToShareholdersAcquisition" id="atch_FairValueOfSharesTransferredToShareholdersAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SharesAuthorizedForResaleBySellingStockholders" id="atch_SharesAuthorizedForResaleBySellingStockholders" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="GrantThorntonLlpMember" id="atch_GrantThorntonLlpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IbCapitalLlcMember" id="atch_IbCapitalLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OutsideBoxCapitalIncMember" id="atch_OutsideBoxCapitalIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CarriageHouseCapitalIncMember" id="atch_CarriageHouseCapitalIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WinstonStrawnLlpMember" id="atch_WinstonStrawnLlpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DueUponSigningOfContractMember" id="atch_DueUponSigningOfContractMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DueInMonthsFourThroughTwelveFromDateOfSigningMember" id="atch_DueInMonthsFourThroughTwelveFromDateOfSigningMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestSolutionsNoteMember" id="atch_InterestSolutionsNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="JonesTradingNoteMember" id="atch_JonesTradingNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ToppanNoteMember" id="atch_ToppanNoteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfSharesIssuableUponDebtConversion" id="atch_NumberOfSharesIssuableUponDebtConversion" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfSharesIssuableForServices" id="atch_NumberOfSharesIssuableForServices" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ValueOfSharesIssuableForServices" id="atch_ValueOfSharesIssuableForServices" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ValueOfSharesIssuableForServicesInEachInstallment" id="atch_ValueOfSharesIssuableForServicesInEachInstallment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AtlasclearInc.Member" id="atch_AtlasclearInc.Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SurfacexchangeMember" id="atch_SurfacexchangeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BondQuantumMember" id="atch_BondQuantumMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AtlasMember" id="atch_AtlasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RubiconMember" id="atch_RubiconMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PurchasePriceForAssetsTransfer" id="atch_PurchasePriceForAssetsTransfer" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ValueOfWarrantsIssued" id="atch_ValueOfWarrantsIssued" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalValueOfSharesTransferredAsPurchasePrice" id="atch_AdjustmentsToAdditionalPaidInCapitalValueOfSharesTransferredAsPurchasePrice" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfInstallments" id="atch_NumberOfInstallments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure" id="atch_EarnoutLiabilityNoncurrentLiabilityFairValueDisclosure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="MeasurementInputProbabilityOfBusinessCombinationMember" id="atch_MeasurementInputProbabilityOfBusinessCombinationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonRedemptionAgreementLiabilityMeasurementInput" id="atch_NonRedemptionAgreementLiabilityMeasurementInput" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="MeasurementInputEquityVolatilityMember" id="atch_MeasurementInputEquityVolatilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EarnoutLiabilityMeasurementInput" id="atch_EarnoutLiabilityMeasurementInput" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="EarnoutLiabilityMember" id="atch_EarnoutLiabilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FairValueMeasurementIncreasedFairValue" id="atch_FairValueMeasurementIncreasedFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ChardanCapitalMarketLlcMember" id="atch_ChardanCapitalMarketLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestSolutionsMember" id="atch_InterestSolutionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="JonestradingInstitutionalServicesMember" id="atch_JonestradingInstitutionalServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FunicularFundsMember" id="atch_FunicularFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FairValueAssetsLevel1ToLevel2TransfersAmount1" id="atch_FairValueAssetsLevel1ToLevel2TransfersAmount1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="FairValueAssetsLevel2ToLevel1TransfersAmount1" id="atch_FairValueAssetsLevel2ToLevel1TransfersAmount1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="FairValueLiabilitiesLevel1ToLevel2TransfersAmount1" id="atch_FairValueLiabilitiesLevel1ToLevel2TransfersAmount1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FairValueLiabilitiesLevel2ToLevel1TransfersAmount1" id="atch_FairValueLiabilitiesLevel2ToLevel1TransfersAmount1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="StockPayableCurrent" id="atch_StockPayableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SharesIssuedToPurchasePasquire" id="atch_SharesIssuedToPurchasePasquire" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="SharesIssuedAsDepositForCommercialBankAcquisition" id="atch_SharesIssuedAsDepositForCommercialBankAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PascquireMember" id="atch_PascquireMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingLeaseMonthlyPaymentsMade" id="atch_OperatingLeaseMonthlyPaymentsMade" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfEscalationInRentEveryYear" id="atch_PercentageOfEscalationInRentEveryYear" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AtlasclearPlatformMember" id="atch_AtlasclearPlatformMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PacsquareMember" id="atch_PacsquareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PurchasePricePerShareAt6.00Member" id="atch_PurchasePricePerShareAt6.00Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PurchasePricePerShareAt1.50Member" id="atch_PurchasePricePerShareAt1.50Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ThresholdPeriodToReceiveLevel1EquitiesTradingPlatformFromSigningOfAgreement" id="atch_ThresholdPeriodToReceiveLevel1EquitiesTradingPlatformFromSigningOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AssetAcquisitionPurchaseConsiderationPayableInCashAndSharesOfCommonStock" id="atch_AssetAcquisitionPurchaseConsiderationPayableInCashAndSharesOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AssetAcquisitionPurchaseConsiderationPayableInCashUponDeliveryOfSourceCodeAndExecutionOfPurchaseAgreement" id="atch_AssetAcquisitionPurchaseConsiderationPayableInCashUponDeliveryOfSourceCodeAndExecutionOfPurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AssetAcquisitionPurchaseConsiderationPayableInFourMonthlyInstallments" id="atch_AssetAcquisitionPurchaseConsiderationPayableInFourMonthlyInstallments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AssetAcquisitionPurchaseConsiderationPayableInEachMonthlyInstallment" id="atch_AssetAcquisitionPurchaseConsiderationPayableInEachMonthlyInstallment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AssetAcquisitionPurchaseConsiderationNumberOfMonthlyInstallments" id="atch_AssetAcquisitionPurchaseConsiderationNumberOfMonthlyInstallments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="AssetAcquisitionPurchaseConsiderationPayableRatablyOnModuleByModuleBasisUponDeliveryAndAcceptanceOfEachOfPlatformModules" id="atch_AssetAcquisitionPurchaseConsiderationPayableRatablyOnModuleByModuleBasisUponDeliveryAndAcceptanceOfEachOfPlatformModules" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SharesIssuedInLieuOfNonrefundableEscrowDeposit" id="atch_SharesIssuedInLieuOfNonrefundableEscrowDeposit" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LesseeOperatingLeasesOtherInformationTableTextBlock" id="atch_LesseeOperatingLeasesOtherInformationTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConsultingExpensesAdjustmentAsStockPayable" id="atch_ConsultingExpensesAdjustmentAsStockPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="CashReceivedFromAcquisition" id="atch_CashReceivedFromAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodSharesIssuedForStockPayable" id="atch_StockIssuedDuringPeriodSharesIssuedForStockPayable" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DepositOnAcquisitonOfComercialBancorpAbstract" id="atch_DepositOnAcquisitonOfComercialBancorpAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DepositOnAcquisitonOfComercialBancorpTextBlock" id="atch_DepositOnAcquisitonOfComercialBancorpTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity" id="atch_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityTransferredToEquity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CommonStockNotesIssuedToToSettledVendorObligations" id="atch_CommonStockNotesIssuedToToSettledVendorObligations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="CommonStockAdjustmentExciseTaxesRelatedToRedemptions" id="atch_CommonStockAdjustmentExciseTaxesRelatedToRedemptions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="LeadNectarMember" id="atch_LeadNectarMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ValueOfSharesPayableForInternetMarketingServices" id="atch_ValueOfSharesPayableForInternetMarketingServices" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="PrincipalBalanceAmountSource2" id="atch_PrincipalBalanceAmountSource2" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="NumberOfTradingDaysOverWhichVolumeWeightedAverageSharePriceOfCommonStockConsideredForDeterminationOfFounderSharesAgreedToTransferSource2" id="atch_NumberOfTradingDaysOverWhichVolumeWeightedAverageSharePriceOfCommonStockConsideredForDeterminationOfFounderSharesAgreedToTransferSource2" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInStockLoanSource2" id="atch_IncreaseDecreaseInStockLoanSource2" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="FairValueAdjustmentOfWarrantLiabilityDerivative" id="atch_FairValueAdjustmentOfWarrantLiabilityDerivative" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
</xsd:schema>
