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  <xs:element id="step_InvestmentsOfConsolidatedFundsCost" abstract="false" name="InvestmentsOfConsolidatedFundsCost" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_R2024Q1Member" abstract="true" name="R2024Q1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_TransactionAgreementNotificationPeriod" abstract="false" name="TransactionAgreementNotificationPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="step_StockholdersEquityUnitsExchangedInOfferingShares" abstract="false" name="StockholdersEquityUnitsExchangedInOfferingShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_CarriedInterestAllocationUnrealizedMember" abstract="true" name="CarriedInterestAllocationUnrealizedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ManagementAndAdvisoryFeesNetSeparatelyManagedAccountsMember" abstract="true" name="ManagementAndAdvisoryFeesNetSeparatelyManagedAccountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_IncentiveFeesMember" abstract="true" name="IncentiveFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ExchangeTwoMember" abstract="true" name="ExchangeTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_LegacyGrossCarriedInterestAllocationFocusedCommingledFundsMember" abstract="true" name="LegacyGrossCarriedInterestAllocationFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInFinancingActivitiesAbstract" abstract="true" name="AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInFinancingActivitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="step_ManagementAndAdvisoryFeesNetFocusedCommingledFundsMember" abstract="true" name="ManagementAndAdvisoryFeesNetFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesConsolidatedFundsAbstract" abstract="true" name="AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesConsolidatedFundsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="step_InvestmentsOfConsolidatedFunds" abstract="false" name="InvestmentsOfConsolidatedFunds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_CarriedInterestAllocationMember" abstract="true" name="CarriedInterestAllocationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_EquityMethodInvestmentsAccruedCarriedInterestAllocations" abstract="false" name="EquityMethodInvestmentsAccruedCarriedInterestAllocations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_OtherLiabilitiesDistributionsPayableMember" abstract="true" name="OtherLiabilitiesDistributionsPayableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ComprehensiveIncomeLossNetOfTaxAttributableToNonredeemableNoncontrollingInterest" abstract="false" name="ComprehensiveIncomeLossNetOfTaxAttributableToNonredeemableNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_AdjustmentsToAdditionalPaidInCapitalDecreaseInDeferredTaxAssetsValuationAllowance" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalDecreaseInDeferredTaxAssetsValuationAllowance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_StockholdersEquityTransactionAgreementAnnualPortionOfEquityInterestsToBeExchanged" abstract="false" name="StockholdersEquityTransactionAgreementAnnualPortionOfEquityInterestsToBeExchanged" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_SterlingOvernightIndexAverageMember" abstract="true" name="SterlingOvernightIndexAverageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_LegacyAccruedCarriedInterestAllocations" abstract="false" name="LegacyAccruedCarriedInterestAllocations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_ComingledFundsConcentrationRiskMember" abstract="true" name="ComingledFundsConcentrationRiskMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_CompensationAndBenefitsExpense" abstract="false" name="CompensationAndBenefitsExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_IncentiveFeesSeparatelyManagedAccountsMember" abstract="true" name="IncentiveFeesSeparatelyManagedAccountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_InvestmentInFundBeforeEliminations" abstract="false" name="InvestmentInFundBeforeEliminations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_LegacyPerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation" abstract="false" name="LegacyPerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_NumberOfClassesOfCommonStockOutstanding" abstract="false" name="NumberOfClassesOfCommonStockOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="step_LegacyInvestmentAccruedCarriedInterestRelatedCompensationPayable" abstract="false" name="LegacyInvestmentAccruedCarriedInterestRelatedCompensationPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation" abstract="false" name="PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ManagementContractsMember" abstract="true" name="ManagementContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsCashAndReceivables" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsCashAndReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ClassCPartnershipUnitMember" abstract="true" name="ClassCPartnershipUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_CompensationExpenseCashBasedCompensationAndBenefits" abstract="false" name="CompensationExpenseCashBasedCompensationAndBenefits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_OtherIncomeAndOtherExpensePolicyTextBlock" abstract="false" name="OtherIncomeAndOtherExpensePolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="step_DisposalGroupIncludingDiscontinuedOperationTerminatedNumberOfEmployees" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationTerminatedNumberOfEmployees" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="step_ComputerEquipmentAndSoftwareMember" abstract="true" name="ComputerEquipmentAndSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOther" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpensesAndOther" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_EuroInterbankOfferRateMultipliedByStatutoryReserveRateMember" abstract="true" name="EuroInterbankOfferRateMultipliedByStatutoryReserveRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_TransactionAgreementNumberOfAnnualExchanges" abstract="false" name="TransactionAgreementNumberOfAnnualExchanges" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="step_RevenueFromContractWithCustomerIncentiveFeesAsPercentageOfNetInvestmentIncome" abstract="false" name="RevenueFromContractWithCustomerIncentiveFeesAsPercentageOfNetInvestmentIncome" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="step_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLegacyCarriedInterestRelatedCompensation" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLegacyCarriedInterestRelatedCompensation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_LineOfCreditFacilityCommitmentFeePercentageSpreadOnBaseIfUtilizationLessThan50Percent" abstract="false" name="LineOfCreditFacilityCommitmentFeePercentageSpreadOnBaseIfUtilizationLessThan50Percent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="step_RevenueLegacyCarriedInterestAllocationAsPercentageOfCumulativeFundOrAccountPerformance" abstract="false" name="RevenueLegacyCarriedInterestAllocationAsPercentageOfCumulativeFundOrAccountPerformance" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="step_InvestmentsOfConsolidatedFundsPercentOfTotalInvestments" abstract="false" name="InvestmentsOfConsolidatedFundsPercentOfTotalInvestments" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_AdjustmentsToAdditionalPaidInCapitalIncreaseInDeferredTaxAssetsValuationAllowance" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalIncreaseInDeferredTaxAssetsValuationAllowance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_TwoInvestmentsMember" abstract="true" name="TwoInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ScheduleOfCommonStockOutstandingRollForward" abstract="true" name="ScheduleOfCommonStockOutstandingRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationRealized" abstract="false" name="PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationRealized" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_DividendsIncurredButNotYetPaid" abstract="false" name="DividendsIncurredButNotYetPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_CommonClassBMemberIssuableInConnectionWithVestingOfClassB2UnitsMember" abstract="true" name="CommonClassBMemberIssuableInConnectionWithVestingOfClassB2UnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_PaymentsToRelatedPartiesTaxReceivableAgreements" abstract="false" name="PaymentsToRelatedPartiesTaxReceivableAgreements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_RelatedPartyTransactionsPolicyTextBlock" abstract="false" name="RelatedPartyTransactionsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="step_ManagementAndAdvisoryFeesNetFundReimbursementRevenuesMember" abstract="true" name="ManagementAndAdvisoryFeesNetFundReimbursementRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_IncentiveFeesFocusedCommingledFundsMember" abstract="true" name="IncentiveFeesFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_PaymentsToAcquireBusinessesNetOfWorkingCapitalAdjustment" abstract="false" name="PaymentsToAcquireBusinessesNetOfWorkingCapitalAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_AdjustmentsToReconcileNetIncomeLossToNetCashProvidedByOperatingActivitiesOfConsolidatedFundsAbstract" abstract="true" name="AdjustmentsToReconcileNetIncomeLossToNetCashProvidedByOperatingActivitiesOfConsolidatedFundsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="step_IncrementalNetCashTaxSavingsDueToExchangingLimitedPartnersPercent" abstract="false" name="IncrementalNetCashTaxSavingsDueToExchangingLimitedPartnersPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_PartnershipsAndLLCInterestsMember" abstract="true" name="PartnershipsAndLLCInterestsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_CurrentEventsPolicyPolicyTextBlock" abstract="false" name="CurrentEventsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="step_ContractualRightsManagementContractsMember" abstract="true" name="ContractualRightsManagementContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_StockIssuedForAcquisitions" abstract="false" name="StockIssuedForAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_DueToRelatedPartiesTaxReceivableAgreements" abstract="false" name="DueToRelatedPartiesTaxReceivableAgreements" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_VariableInterestEntityNotPrimaryBeneficiaryLegacyEntitiesMember" abstract="true" name="VariableInterestEntityNotPrimaryBeneficiaryLegacyEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_LegacyInvestmentsInFunds" abstract="false" name="LegacyInvestmentsInFunds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_StepStoneFundsMember" abstract="true" name="StepStoneFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_DebtInstrumentBaseInterestRate" abstract="false" name="DebtInstrumentBaseInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="step_LineOfCreditFacilityCommitmentFeePercentageSpreadOnBaseIfUtilizationGreaterThan50Percent" abstract="false" name="LineOfCreditFacilityCommitmentFeePercentageSpreadOnBaseIfUtilizationGreaterThan50Percent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="step_RevenueCarriedInterestAllocationMinimumReturnLevelsRequired" abstract="false" name="RevenueCarriedInterestAllocationMinimumReturnLevelsRequired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="step_RevenueNotFromContractWithCustomerIncomeLossFromEquityMethodInvestmentsAndInvestmentIncome" abstract="false" name="RevenueNotFromContractWithCustomerIncomeLossFromEquityMethodInvestmentsAndInvestmentIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ConsolidatedFundsMember" abstract="true" name="ConsolidatedFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssetsAndReceivables" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssetsAndReceivables" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ShareBasedCompensationArrangementByShareBasedPaymentAwardProfitsInterest" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardProfitsInterest" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="step_RemeasurementOfLeaseLiabilities" abstract="false" name="RemeasurementOfLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfSharesWithheldForEmployeeTaxes" abstract="false" name="StockIssuedDuringPeriodValueRestrictedStockAwardNetOfSharesWithheldForEmployeeTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_S2024Q1Member" abstract="true" name="S2024Q1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_NoncontrollingInterestInConsolidatedFundsMember" abstract="true" name="NoncontrollingInterestInConsolidatedFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseRightOfUseAssetsNet" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseRightOfUseAssetsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_AUDScreenRateMultipliedByStatutoryReserveRateMember" abstract="true" name="AUDScreenRateMultipliedByStatutoryReserveRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_IncreaseDecreaseInLeaseRightOfUseAssetsNetOfLeaseLiabilities" abstract="false" name="IncreaseDecreaseInLeaseRightOfUseAssetsNetOfLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_PartnershipAndLLCInterestsMember" abstract="true" name="PartnershipAndLLCInterestsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ProceedsFromCapitalContributionsFromNonControllingInterests" abstract="false" name="ProceedsFromCapitalContributionsFromNonControllingInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ReclassificationsOfPermanentEquityToTemporaryEquityAndAdjustmentToRedemptionValue" abstract="false" name="ReclassificationsOfPermanentEquityToTemporaryEquityAndAdjustmentToRedemptionValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseLiabilities" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_EconomicOwnershipInterest" abstract="false" name="EconomicOwnershipInterest" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_A2020LongTermIncentivePlanMember" abstract="true" name="A2020LongTermIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_OtherReceivablesLoansMember" abstract="true" name="OtherReceivablesLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_OtherReceivablesEmployeesMember" abstract="true" name="OtherReceivablesEmployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_IncrementalNetCashTaxSavingsDueToExchangingLimitedPartnersBenefitRetainedPercent" abstract="false" name="IncrementalNetCashTaxSavingsDueToExchangingLimitedPartnersBenefitRetainedPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_AdjustmentsToAdditionalPaidInCapitalDeferredTaxEffectOfExchange" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalDeferredTaxEffectOfExchange" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_UnrealizedInvestmentGainLossFromConsolidatedFunds" abstract="false" name="UnrealizedInvestmentGainLossFromConsolidatedFunds" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ConsolidatedFundsInvestmentsTableTextBlock" abstract="false" name="ConsolidatedFundsInvestmentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="step_StockholdersEquityShareExchangeSharesIssued" abstract="false" name="StockholdersEquityShareExchangeSharesIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_LiabilityClassifiedAwardMember" abstract="true" name="LiabilityClassifiedAwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_OtherLiabilitiesStepStoneFundsMember" abstract="true" name="OtherLiabilitiesStepStoneFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_NewYorkFederalReserveBankRateMember" abstract="true" name="NewYorkFederalReserveBankRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_SupplementalDividendsPayableAmountPerShare" abstract="false" name="SupplementalDividendsPayableAmountPerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="step_GainLossOnRemeasurementOfLeaseLiabilities" abstract="false" name="GainLossOnRemeasurementOfLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_BusinessCombinationContingentConsiderationLiabilityMember" abstract="true" name="BusinessCombinationContingentConsiderationLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_LegacyEntitiesMember" abstract="true" name="LegacyEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_LesseeOperatingLeaseNumberOfCities" abstract="false" name="LesseeOperatingLeaseNumberOfCities" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="step_VariableInterestEntityNotPrimaryBeneficiarySubsidiariesMember" abstract="true" name="VariableInterestEntityNotPrimaryBeneficiarySubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="step_ClassOfPartnershipUnitDomain" abstract="true" name="ClassOfPartnershipUnitDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_CommonStockNumberOfVotes" abstract="false" name="CommonStockNumberOfVotes" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="step_SwissAverageRateOvernightMember" abstract="true" name="SwissAverageRateOvernightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" abstract="true" name="CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="step_GreenspringBankOfficeSolutionsLLCGBOSMember" abstract="true" name="GreenspringBankOfficeSolutionsLLCGBOSMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_EquityMethodInvestmentAccruedCarriedInterestRelatedCompensationPayable" abstract="false" name="EquityMethodInvestmentAccruedCarriedInterestRelatedCompensationPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ContractualRightsServiceAgreementsMember" abstract="true" name="ContractualRightsServiceAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_EquityMethodInvestmentEquityInterestPerFundPercentageMaximum" abstract="false" name="EquityMethodInvestmentEquityInterestPerFundPercentageMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_A1MonthTermSecuredOvernightFinancingRateSOFRMember" abstract="true" name="A1MonthTermSecuredOvernightFinancingRateSOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_PerformanceFeesMember" abstract="true" name="PerformanceFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_PartnershipUnitsIssuedForAcquisition" abstract="false" name="PartnershipUnitsIssuedForAcquisition" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ClassB2UnitMember" abstract="true" name="ClassB2UnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLegacyInvestmentsInFundsAndAccruedCarriedInterestAllocations" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLegacyInvestmentsInFundsAndAccruedCarriedInterestAllocations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_StockholdersEquityTransactionAgreementsSharesAvailableForIssuanceAsConsideration" abstract="false" name="StockholdersEquityTransactionAgreementsSharesAvailableForIssuanceAsConsideration" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_CarriedInterestAllocationRealizedMember" abstract="true" name="CarriedInterestAllocationRealizedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ProceedsFromSaleOfConsolidatedFunds" abstract="false" name="ProceedsFromSaleOfConsolidatedFunds" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_LegacyInvestmentIncome" abstract="false" name="LegacyInvestmentIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ConsolidatedEntitiesExcludingLegacyEntitiesMember" abstract="true" name="ConsolidatedEntitiesExcludingLegacyEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ManagementAndAdvisoryFeesNetBDCIncomeBasedIncentiveFeesMember" abstract="true" name="ManagementAndAdvisoryFeesNetBDCIncomeBasedIncentiveFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ManagementAndAdvisoryFeesNetAdvisoryAndOtherServicesMember" abstract="true" name="ManagementAndAdvisoryFeesNetAdvisoryAndOtherServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ExcludingConsolidatedFundsMember" abstract="true" name="ExcludingConsolidatedFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_RevenueCarriedInterestAllocationAsPercentageOfCumulativeFundOrAccountPerformance" abstract="false" name="RevenueCarriedInterestAllocationAsPercentageOfCumulativeFundOrAccountPerformance" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="step_LegacyCarriedInterestAllocationSeparatelyManagedAccountsMember" abstract="true" name="LegacyCarriedInterestAllocationSeparatelyManagedAccountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_OtherReceivablesStepStoneFundsMember" abstract="true" name="OtherReceivablesStepStoneFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_TaxReceivableAgreementPolicyPolicyTextBlock" abstract="false" name="TaxReceivableAgreementPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="step_CarriedInterestAllocationSeparatelyManagedAccountsMember" abstract="true" name="CarriedInterestAllocationSeparatelyManagedAccountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ClassBPartnershipUnitMember" abstract="true" name="ClassBPartnershipUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_BusinessAcquisitionProFormaRevenueAndUnrealizedGainsLosses" abstract="false" name="BusinessAcquisitionProFormaRevenueAndUnrealizedGainsLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_IncreaseDecreaseInDeferredTaxAssetsExchangeOfPartnershipUnitsForCommonStock" abstract="false" name="IncreaseDecreaseInDeferredTaxAssetsExchangeOfPartnershipUnitsForCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_ConversionOfStockConversionBasis" abstract="false" name="ConversionOfStockConversionBasis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_LegacyInvestmentsInFundsAndAccruedCarriedInterestAllocations" abstract="false" name="LegacyInvestmentsInFundsAndAccruedCarriedInterestAllocations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_RevenueCarriedInterestAllocationEmployeeCompensationPercentage" abstract="false" name="RevenueCarriedInterestAllocationEmployeeCompensationPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_LegacyFundsMember" abstract="true" name="LegacyFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_TransactionAgreementNumberOfAdditionalAnnualExchanges" abstract="false" name="TransactionAgreementNumberOfAdditionalAnnualExchanges" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="step_EquityMethodInvestmentsExcludingAccruedCarriedInterestAllocations" abstract="false" name="EquityMethodInvestmentsExcludingAccruedCarriedInterestAllocations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_SeparatelyManagedAccountConcentrationRiskMember" abstract="true" name="SeparatelyManagedAccountConcentrationRiskMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_DeferredTaxEffectFromExchangeOfUnitsNet" abstract="false" name="DeferredTaxEffectFromExchangeOfUnitsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_LegacyCarriedInterestAllocationFocusedCommingledFundsMember" abstract="true" name="LegacyCarriedInterestAllocationFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_LegacyCarriedInterestAllocationMember" abstract="true" name="LegacyCarriedInterestAllocationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_IncreaseDecreaseInDueToRelatedPartiesTaxReceivableAgreements" abstract="false" name="IncreaseDecreaseInDueToRelatedPartiesTaxReceivableAgreements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_AdjustmentsToAdditionalPaidInCapitalReallocationOfNoncontrollingInterest" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalReallocationOfNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_GreenspringMember" abstract="true" name="GreenspringMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ClassA2InterestsMember" abstract="true" name="ClassA2InterestsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="step_ComprehensiveIncomeLossNetOfTaxRedeemableNoncontrollingInterest" abstract="false" name="ComprehensiveIncomeLossNetOfTaxRedeemableNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
