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  <xs:element id="intl_TBAAndForwardSettlingSecuritiesMember" abstract="true" name="TBAAndForwardSettlingSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_SeniorStoneXGroupIncCommittedCreditFacilityRevolvingLineOfCreditMember" abstract="true" name="SeniorStoneXGroupIncCommittedCreditFacilityRevolvingLineOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_FinancialInstrumentsOwnedMember" abstract="true" name="FinancialInstrumentsOwnedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_CommoditiesWarehouseReceiptsMember" abstract="true" name="CommoditiesWarehouseReceiptsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_MutualFundTrailingCommissionsMember" abstract="true" name="MutualFundTrailingCommissionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_OtherSalesBasedCommissionsMember" abstract="true" name="OtherSalesBasedCommissionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_PaymentsSegmentMember" abstract="true" name="PaymentsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_OTCEquityAndIndicesContractMember" abstract="true" name="OTCEquityAndIndicesContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_TrailingCommissionsMember" abstract="true" name="TrailingCommissionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_PayablesToBrokerDealersClearingOrganizationsAndCounterpartiesAxis" abstract="true" name="PayablesToBrokerDealersClearingOrganizationsAndCounterpartiesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="intl_CashSegregatedAndDepositedWithOrPledgedToExchangeClearingOrganizationsAndOtherFuturesCommissionMerchants" abstract="false" name="CashSegregatedAndDepositedWithOrPledgedToExchangeClearingOrganizationsAndOtherFuturesCommissionMerchants" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_PhysicalCommoditiesInventoryDomain" abstract="true" name="PhysicalCommoditiesInventoryDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_EmployeeRelatedExpenses" abstract="false" name="EmployeeRelatedExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_ExchangeFirmCommonStockMember" abstract="true" name="ExchangeFirmCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_PhilipSmithMember" abstract="true" name="PhilipSmithMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="intl_ContingentConsiderationMember" abstract="true" name="ContingentConsiderationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_ConsultingManagementAndAccountFeesMember" abstract="true" name="ConsultingManagementAndAccountFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_DirectorTradingArrangementMember" abstract="true" name="DirectorTradingArrangementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="intl_ExchangeTradedCommodityContractsMember" abstract="true" name="ExchangeTradedCommodityContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_NonCashEquivalentSegregatedAssets" abstract="false" name="NonCashEquivalentSegregatedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_MutualFundSalesBasedCommissionsMember" abstract="true" name="MutualFundSalesBasedCommissionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_StoneXFinancialPteLtdMember" abstract="true" name="StoneXFinancialPteLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_NumberOfDifferentTypesOfForeignCurrencies" abstract="false" name="NumberOfDifferentTypesOfForeignCurrencies" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="intl_BrokerDealerPayableToOtherBrokerDealerAndClearingOrganizationIncludingNettingAdjustment" abstract="false" name="BrokerDealerPayableToOtherBrokerDealerAndClearingOrganizationIncludingNettingAdjustment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_DerivativeAssetsHedgeGainLossToBeReclassifiedWithin12Months" abstract="false" name="DerivativeAssetsHedgeGainLossToBeReclassifiedWithin12Months" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_PayablesToBrokerDealersClearingOrganizationsAndCounterpartiesDomain" abstract="true" name="PayablesToBrokerDealersClearingOrganizationsAndCounterpartiesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_SalesOfPhysicalCommoditiesMember" abstract="true" name="SalesOfPhysicalCommoditiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_CottonDistributorsIncMember" abstract="true" name="CottonDistributorsIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_MembershipExpense" abstract="false" name="MembershipExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_SecuritiesSegregatedUnderFederalAndOtherRegulations" abstract="false" name="SecuritiesSegregatedUnderFederalAndOtherRegulations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_OTCDerivativeBrokerageMember" abstract="true" name="OTCDerivativeBrokerageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_PayablesToClientsMember" abstract="true" name="PayablesToClientsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_AgriculturalAndEnergyProductMember" abstract="true" name="AgriculturalAndEnergyProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_SeniorNotesDueTwentyTwentyFiveMember" abstract="true" name="SeniorNotesDueTwentyTwentyFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_SweepProgramFeesMember" abstract="true" name="SweepProgramFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_DividendIncomeExpenseNet" abstract="false" name="DividendIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_FinancialInstrumentsWithOffBalanceSheetRiskAndConcentrationsOfCreditRiskAbstract" abstract="true" name="FinancialInstrumentsWithOffBalanceSheetRiskAndConcentrationsOfCreditRiskAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="intl_ClientAccountFeesMember" abstract="true" name="ClientAccountFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_OverCounterOtcCommodityContractsMember" abstract="true" name="OverCounterOtcCommodityContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_DebtInstrumentNumberOfLenders" abstract="false" name="DebtInstrumentNumberOfLenders" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="intl_UnderwritingFeesMember" abstract="true" name="UnderwritingFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_DerivativeLiabilitiesHedgeGainLossToBeReclassifiedWithin12Months" abstract="false" name="DerivativeLiabilitiesHedgeGainLossToBeReclassifiedWithin12Months" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_CounterpartyAndCashCollateralNettingAdjustmentMember" abstract="true" name="CounterpartyAndCashCollateralNettingAdjustmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_StoneXMarketsLLCMember" abstract="true" name="StoneXMarketsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_AccountsPayableAndOtherAccruedLiabilitiesIncludingContingentLiabilitiesDomain" abstract="true" name="AccountsPayableAndOtherAccruedLiabilitiesIncludingContingentLiabilitiesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_OverCounterOtcForeignExchangeContractsMember" abstract="true" name="OverCounterOtcForeignExchangeContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_InstitutionalSegmentMember" abstract="true" name="InstitutionalSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_InsuranceAnnuityTrailingCommissionsMember" abstract="true" name="InsuranceAnnuityTrailingCommissionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_PreciousMetalsTradingMember" abstract="true" name="PreciousMetalsTradingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_CommercialSegmentMember" abstract="true" name="CommercialSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_InterestIncomeNetMember" abstract="true" name="InterestIncomeNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_StoneXFinancialIncMember" abstract="true" name="StoneXFinancialIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_DiegoRotsztainMember" abstract="true" name="DiegoRotsztainMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="intl_InterestExpenseOnCorporateFunding" abstract="false" name="InterestExpenseOnCorporateFunding" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_CashFlowHedgesMember" abstract="true" name="CashFlowHedgesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_ReceivableFromClientsNetMember" abstract="true" name="ReceivableFromClientsNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_NumeratorBasicAbstract" abstract="true" name="NumeratorBasicAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="intl_SecuritiesAndOtherAssetsSegregatedUnderFederalAndOtherRegulationsAxis" abstract="true" name="SecuritiesAndOtherAssetsSegregatedUnderFederalAndOtherRegulationsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="intl_AccountsPayableAndOtherAccruedLiabilitiesIncludingContingentLiabilitiesAxis" abstract="true" name="AccountsPayableAndOtherAccruedLiabilitiesIncludingContingentLiabilitiesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="intl_NetSegmentContribution" abstract="false" name="NetSegmentContribution" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_TradeConversionFeesMember" abstract="true" name="TradeConversionFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_DirectorAndPublicCompanyExpenses" abstract="false" name="DirectorAndPublicCompanyExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_DerivativeNettingAdjustmentAxis" abstract="true" name="DerivativeNettingAdjustmentAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="intl_DepositsAndReceivablesFromExchangeClearingOrganizationsAxis" abstract="true" name="DepositsAndReceivablesFromExchangeClearingOrganizationsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="intl_OtherCommissionAndClearingFeesMember" abstract="true" name="OtherCommissionAndClearingFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_MiddleEastAndAsiaMember" abstract="true" name="MiddleEastAndAsiaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_CommissionandClearingFeesMember" abstract="true" name="CommissionandClearingFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_ClientsMember" abstract="true" name="ClientsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_UndistributedEarningsAllocatedtoParticipatingSecuritiesContinuingOperations" abstract="false" name="UndistributedEarningsAllocatedtoParticipatingSecuritiesContinuingOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_PhysicalCommoditiesInventoryPreciousMetalsMember" abstract="true" name="PhysicalCommoditiesInventoryPreciousMetalsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_ReceivablesFromCustomersFairValueDisclosure" abstract="false" name="ReceivablesFromCustomersFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_DenominatorBasicAbstract" abstract="true" name="DenominatorBasicAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="intl_Payablestobdsandcounterpartiesatfairvalue" abstract="false" name="Payablestobdsandcounterpartiesatfairvalue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_XuongNguyenMember" abstract="true" name="XuongNguyenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="intl_FiniteLivedIntangibleAssetExpectedAmortizationYearFourAndThereafter" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationYearFourAndThereafter" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_TradingSystemsAndMarketInformation" abstract="false" name="TradingSystemsAndMarketInformation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_CapitalAndOtherRegulatoryRequirementsAbstract" abstract="true" name="CapitalAndOtherRegulatoryRequirementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="intl_AmountOutstandingOnCommittedCreditFacilities" abstract="false" name="AmountOutstandingOnCommittedCreditFacilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_DerivativeNettingAdjustmentDomain" abstract="true" name="DerivativeNettingAdjustmentDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="intl_NonSegregatedCashAndOtherNonCashEquivalentAssetsIncludedWithInDepositsAndReceivablesFromBrokerDealersClearingOrganizationsAndCounterParties" abstract="false" name="NonSegregatedCashAndOtherNonCashEquivalentAssetsIncludedWithInDepositsAndReceivablesFromBrokerDealersClearingOrganizationsAndCounterParties" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="intl_DepositsAndReceivablesFromExchangeClearingOrganizationsDomain" abstract="true" name="DepositsAndReceivablesFromExchangeClearingOrganizationsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
