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  <xs:element id="step_RevenueLegacyCarriedInterestAllocationAsPercentageOfCumulativeFundOrAccountPerformance" abstract="false" name="RevenueLegacyCarriedInterestAllocationAsPercentageOfCumulativeFundOrAccountPerformance" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <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_IncrementalNetCashTaxSavingsDueToExchangingLimitedPartnersBenefitRetainedPercent" abstract="false" name="IncrementalNetCashTaxSavingsDueToExchangingLimitedPartnersBenefitRetainedPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_ManagementAndAdvisoryFeesNetFocusedCommingledFundsMember" abstract="true" name="ManagementAndAdvisoryFeesNetFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ManagementAndAdvisoryFeesNetSeparatelyManagedAccountsMember" abstract="true" name="ManagementAndAdvisoryFeesNetSeparatelyManagedAccountsMember" 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-types:domainItemType"/>
  <xs:element id="step_ManagementAndAdvisoryFeesNetFundReimbursementRevenuesMember" abstract="true" name="ManagementAndAdvisoryFeesNetFundReimbursementRevenuesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_IncomeBasedIncentiveFeesMember" abstract="true" name="IncomeBasedIncentiveFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_IncentiveFeesSeparatelyManagedAccountsMember" abstract="true" name="IncentiveFeesSeparatelyManagedAccountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_IncentiveFeesFocusedCommingledFundsMember" abstract="true" name="IncentiveFeesFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_CarriedInterestAllocationSeparatelyManagedAccountsMember" abstract="true" name="CarriedInterestAllocationSeparatelyManagedAccountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_CarriedInterestAllocationFocusedCommingledFundsMember" abstract="true" name="CarriedInterestAllocationFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_LegacyCarriedInterestAllocationSeparatelyManagedAccountsMember" abstract="true" name="LegacyCarriedInterestAllocationSeparatelyManagedAccountsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_LegacyCarriedInterestAllocationFocusedCommingledFundsMember" abstract="true" name="LegacyCarriedInterestAllocationFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_LegacyGrossCarriedInterestAllocationFocusedCommingledFundsMember" abstract="true" name="LegacyGrossCarriedInterestAllocationFocusedCommingledFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_VariableInterestEntityNotPrimaryBeneficiarySubsidiariesMember" abstract="true" name="VariableInterestEntityNotPrimaryBeneficiarySubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_VariableInterestEntityNotPrimaryBeneficiaryLegacyEntitiesMember" abstract="true" name="VariableInterestEntityNotPrimaryBeneficiaryLegacyEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_InvestmentInFundBeforeEliminations" abstract="false" name="InvestmentInFundBeforeEliminations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_RevenueNotFromContractWithCustomerIncomeLossFromEquityMethodInvestmentsAndInvestmentIncome" abstract="false" name="RevenueNotFromContractWithCustomerIncomeLossFromEquityMethodInvestmentsAndInvestmentIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" 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-types:domainItemType"/>
  <xs:element id="step_ComingledFundsConcentrationRiskMember" abstract="true" name="ComingledFundsConcentrationRiskMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_OneInvestmentMember" abstract="true" name="OneInvestmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ThreeInvestmentsMember" abstract="true" name="ThreeInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_PartnershipAndLLCInterestsMember" abstract="true" name="PartnershipAndLLCInterestsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_InvestmentsOfConsolidatedFundsPercentOfTotalInvestments" abstract="false" name="InvestmentsOfConsolidatedFundsPercentOfTotalInvestments" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <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_GreenspringMember" abstract="true" name="GreenspringMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_BusinessCombinationContingentConsiderationAmountPaid" abstract="false" name="BusinessCombinationContingentConsiderationAmountPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_ManagementContractsMember" abstract="true" name="ManagementContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_SeriesA5.52NotesMember" abstract="true" name="SeriesA5.52NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_FundCreditFacilityMember" abstract="true" name="FundCreditFacilityMember" 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-types:domainItemType"/>
  <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_EuroInterbankOfferRateMultipliedByStatutoryReserveRateMember" abstract="true" name="EuroInterbankOfferRateMultipliedByStatutoryReserveRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_SterlingOvernightIndexAverageMember" abstract="true" name="SterlingOvernightIndexAverageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_SwissAverageRateOvernightMember" abstract="true" name="SwissAverageRateOvernightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_AUDScreenRateMultipliedByStatutoryReserveRateMember" abstract="true" name="AUDScreenRateMultipliedByStatutoryReserveRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_GBPBaseRateMember" abstract="true" name="GBPBaseRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_DebtInstrumentMinimumAmountOfPrepaymentPercentage" abstract="false" name="DebtInstrumentMinimumAmountOfPrepaymentPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="step_DebtInstrumentBaseInterestRate" abstract="false" name="DebtInstrumentBaseInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_LineOfCreditFacilityCommitmentFeePercentageSpreadOnBaseIfUtilizationGreaterThan50Percent" abstract="false" name="LineOfCreditFacilityCommitmentFeePercentageSpreadOnBaseIfUtilizationGreaterThan50Percent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_LineOfCreditFacilityCommitmentFeePercentageSpreadOnBaseIfUtilizationLessThan50Percent" abstract="false" name="LineOfCreditFacilityCommitmentFeePercentageSpreadOnBaseIfUtilizationLessThan50Percent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_DebtInstrumentCovenantsMinimumManagementFeesPayable" abstract="false" name="DebtInstrumentCovenantsMinimumManagementFeesPayable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="step_PerformanceBasedRestrictedStockUnitsMember" abstract="true" name="PerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ClassB2UnitMember" abstract="true" name="ClassB2UnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_LiabilityClassifiedAwardMember" abstract="true" name="LiabilityClassifiedAwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ConversionOfStockConversionBasis" abstract="false" name="ConversionOfStockConversionBasis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="step_LiabilityClassifiedAwardsDiscountRate" abstract="false" name="LiabilityClassifiedAwardsDiscountRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="step_LiabilityClassifiedAwardTradingMultiple" abstract="false" name="LiabilityClassifiedAwardTradingMultiple" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="step_ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="step_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployeeValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployeeValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_A2025ExchangeMember" abstract="true" name="A2025ExchangeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ExchangeOfPartnershipUnitsForCommonStockMember" abstract="true" name="ExchangeOfPartnershipUnitsForCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_IncreaseDecreaseInDeferredTaxAssetTransactionAgreements" abstract="false" name="IncreaseDecreaseInDeferredTaxAssetTransactionAgreements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" 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_IncreaseDecreaseInDueToRelatedPartiesTaxReceivableAgreements" abstract="false" name="IncreaseDecreaseInDueToRelatedPartiesTaxReceivableAgreements" 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_ClassDPartnershipUnitsMember" abstract="true" name="ClassDPartnershipUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_PerformanceRestrictedStockUnitsMember" abstract="true" name="PerformanceRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_RelatedPartyBeneficialOwnerMinimumPercentage" abstract="false" name="RelatedPartyBeneficialOwnerMinimumPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_OtherReceivablesEmployeesMember" abstract="true" name="OtherReceivablesEmployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_OtherLiabilitiesNonControllingInterestHoldersDueToTaxReceivableAgreementsMember" abstract="true" name="OtherLiabilitiesNonControllingInterestHoldersDueToTaxReceivableAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_ExchangeOneMember" abstract="true" name="ExchangeOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ExchangeTwoMember" abstract="true" name="ExchangeTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ExchangeThreeMember" abstract="true" name="ExchangeThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_SRAMember" abstract="true" name="SRAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_SREMember" abstract="true" name="SREMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_SPDMember" abstract="true" name="SPDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_LimitedPartnersMember" abstract="true" name="LimitedPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_O2026Q1DividendsMember" abstract="true" name="O2026Q1DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_S2026Q1DividendsMember" abstract="true" name="S2026Q1DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_NumberOfClassesOfCommonStockOutstanding" abstract="false" name="NumberOfClassesOfCommonStockOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="step_StockholdersEquityShareExchangeSharesIssued" abstract="false" name="StockholdersEquityShareExchangeSharesIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_StockholdersEquityShareExchangeSharesExchanged" abstract="false" name="StockholdersEquityShareExchangeSharesExchanged" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_StockholdersEquityShareExchangeRatio" abstract="false" name="StockholdersEquityShareExchangeRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="step_TransactionAgreementNumberOfAnnualExchanges" abstract="false" name="TransactionAgreementNumberOfAnnualExchanges" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="step_TransactionAgreementNumberOfAdditionalAnnualExchanges" abstract="false" name="TransactionAgreementNumberOfAdditionalAnnualExchanges" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <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_StockholdersEquityUnitsIssuedForPurchaseOfAssetClassNoncontrollingInterest" abstract="false" name="StockholdersEquityUnitsIssuedForPurchaseOfAssetClassNoncontrollingInterest" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_TransactionAgreementExchangeRatio" abstract="false" name="TransactionAgreementExchangeRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="step_TransactionAgreementMaximumPeriodToExchangeShares" abstract="false" name="TransactionAgreementMaximumPeriodToExchangeShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="step_TransactionAgreementMaximumPeriodToExchangeSharesInAccelerationExchange" abstract="false" name="TransactionAgreementMaximumPeriodToExchangeSharesInAccelerationExchange" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="step_ClassOfPartnershipUnitAxis" abstract="true" name="ClassOfPartnershipUnitAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="step_ClassOfPartnershipUnitDomain" abstract="true" name="ClassOfPartnershipUnitDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ClassBPartnershipUnitMember" abstract="true" name="ClassBPartnershipUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="step_ClassCPartnershipUnitMember" abstract="true" name="ClassCPartnershipUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_StockholdersEquityUnitsExchangedInOfferingShares" abstract="false" name="StockholdersEquityUnitsExchangedInOfferingShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="step_LegacyFundsMember" abstract="true" name="LegacyFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types: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_EquityMethodInvestmentCarriedInterestAllocationsMaximumAmountSubjectToContingentRepayment" abstract="false" name="EquityMethodInvestmentCarriedInterestAllocationsMaximumAmountSubjectToContingentRepayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="step_CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" abstract="true" name="CashPaidForAmountsIncludedInTheMeasurementOfLeaseLiabilitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="step_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
