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  <xsd:element id="opy_FairValueEstimateNotPracticableDueFromCorrespondentBrokers" name="FairValueEstimateNotPracticableDueFromCorrespondentBrokers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticableInvestment" name="FairValueEstimateNotPracticableInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticableOtherPayablesToBrokerDealersAndClearingOrganizations" name="FairValueEstimateNotPracticableOtherPayablesToBrokerDealersAndClearingOrganizations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticableOtherReceivablesFromBrokerDealersAndClearingOrganizations" name="FairValueEstimateNotPracticableOtherReceivablesFromBrokerDealersAndClearingOrganizations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticablePayablesToBrokerDealersAndClearingOrganizations" name="FairValueEstimateNotPracticablePayablesToBrokerDealersAndClearingOrganizations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticablePayablesToCustomers" name="FairValueEstimateNotPracticablePayablesToCustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticablePayabletoCorrespondentBrokers" name="FairValueEstimateNotPracticablePayabletoCorrespondentBrokers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticableReceivablesFromBrokersDealersAndClearingOrganizations" name="FairValueEstimateNotPracticableReceivablesFromBrokersDealersAndClearingOrganizations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticableReceivablesFromClearingOrganizations" name="FairValueEstimateNotPracticableReceivablesFromClearingOrganizations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticableReceivablesFromCustomers" name="FairValueEstimateNotPracticableReceivablesFromCustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticableSecuritiesFailedToDeliver" name="FairValueEstimateNotPracticableSecuritiesFailedToDeliver" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimateNotPracticableSecuritiesFailedToReceive" name="FairValueEstimateNotPracticableSecuritiesFailedToReceive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimatenotPracticableDuefromEmployees" name="FairValueEstimatenotPracticableDuefromEmployees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimatenotPracticableSecuritiessoldunderAgreementstoRepurchase" name="FairValueEstimatenotPracticableSecuritiessoldunderAgreementstoRepurchase" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueEstimatenotPracticableSeniorSecuredNotes" name="FairValueEstimatenotPracticableSeniorSecuredNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueInputDiscountRate" name="FairValueInputDiscountRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_FairValueMeasurementValuationTechniques" name="FairValueMeasurementValuationTechniques" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesIssuances" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesIssuances" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesSettlements" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesSettlements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="opy_FairValueOfLevelThreeAssets" name="FairValueOfLevelThreeAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueOfLevelThreeAssetsandLiabilities" name="FairValueOfLevelThreeAssetsandLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueOfLevelThreeLiabilities" name="FairValueOfLevelThreeLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueUnobservableInputCurrentYield" name="FairValueUnobservableInputCurrentYield" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="opy_FairValueUnobservableInputsDuration" name="FairValueUnobservableInputsDuration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_FinancialInstrumentsEstimateNotPracticableFairValueLineItems" name="FinancialInstrumentsEstimateNotPracticableFairValueLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_FinancialInstrumentsEstimateNotPracticableFairValueTable" name="FinancialInstrumentsEstimateNotPracticableFairValueTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_FinancialInstrumentsEstimateNotPracticableFairValueTableTextBlock" name="FinancialInstrumentsEstimateNotPracticableFairValueTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_FreedomMember" name="FreedomMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_GainLossOnDerivativesPreTaxRecognizedInIncome" name="GainLossOnDerivativesPreTaxRecognizedInIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_IRAFeesMember" name="IRAFeesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_IncreaseDecreaseInDraftPayable" name="IncreaseDecreaseInDraftPayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="opy_IncreaseDecreaseInDueFromEmployeeCurrentAndNoncurrent" name="IncreaseDecreaseInDueFromEmployeeCurrentAndNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="opy_IncreaseDecreaseInReceivableFromCustomers" name="IncreaseDecreaseInReceivableFromCustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="opy_InterestOwnershipByHoldingCompany" name="InterestOwnershipByHoldingCompany" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_InvestmentAdvisoryFeeRevenue" name="InvestmentAdvisoryFeeRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_InvestmentBankingAdvisoryMember" name="InvestmentBankingAdvisoryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_InvestmentBankingCapitalMarketsMember" name="InvestmentBankingCapitalMarketsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_InvestmentBankingFeesMember" name="InvestmentBankingFeesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_InvestmentRedemptionFrequency" name="InvestmentRedemptionFrequency" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_InvestmentRedemptionNoticePeriodMaximum" name="InvestmentRedemptionNoticePeriodMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_InvestmentRedemptionNoticePeriodMinimum" name="InvestmentRedemptionNoticePeriodMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_InvestmentsLockInPeriod" name="InvestmentsLockInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_LesseeOperatingLeaseLeaseNotYetCommencedLiability" name="LesseeOperatingLeaseLeaseNotYetCommencedLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_LevelThreePrincipalAmount" name="LevelThreePrincipalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_LiquidCapitalunderHongKongSFCRules" name="LiquidCapitalunderHongKongSFCRules" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_MaximumSettlementPeriodInCaseOfDelayedDeliveryOfUnderlyingInstrument" name="MaximumSettlementPeriodInCaseOfDelayedDeliveryOfUnderlyingInstrument" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_MoneyMarketsMember" name="MoneyMarketsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_MunicipalAuctionRateSecuritiesMember" name="MunicipalAuctionRateSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_MutualFundIncomeMember" name="MutualFundIncomeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_NetIncomeLossbeforeequityinEarningsofSubsidiaries" name="NetIncomeLossbeforeequityinEarningsofSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_NewProgramMember" name="NewProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_OffsettingSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedSecuritiesSoldUnderAgreementsToRepurchaseSecuritiesLoanedTableTextBlock" name="OffsettingSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedSecuritiesSoldUnderAgreementsToRepurchaseSecuritiesLoanedTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_OperatingLeaseInterestExpense" name="OperatingLeaseInterestExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="opy_OperatingLeaseRightofuseAssetAccumulatedAmortization" name="OperatingLeaseRightofuseAssetAccumulatedAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_OperatingLeaseRightofuseAssetAmortization" name="OperatingLeaseRightofuseAssetAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_OppenheimerEuropeMember" name="OppenheimerEuropeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_OppenheimerInvestmentsAsiaMember" name="OppenheimerInvestmentsAsiaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_OppenheimerMember" name="OppenheimerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_OptionsClearingCorporationMember" name="OptionsClearingCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_OrganizationAndBasisOfPresentationLineItems" name="OrganizationAndBasisOfPresentationLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_OrganizationAndBasisOfPresentationTable" name="OrganizationAndBasisOfPresentationTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_OtherMember" name="OtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_OtherTBAContractsMember" name="OtherTBAContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_PercentageOfNetCapitalToAggregateIndebtedness" name="PercentageOfNetCapitalToAggregateIndebtedness" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_PercentageofNotesRegisteredundertheSecuritiesActof1933" name="PercentageofNotesRegisteredundertheSecuritiesActof1933" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="opy_PledgedSecuritiesOwnedAndPledgedAsCollateralAmountEligibleToBeRepledgedByCounterpartyCarryingValue" name="PledgedSecuritiesOwnedAndPledgedAsCollateralAmountEligibleToBeRepledgedByCounterpartyCarryingValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="opy_PreviousProgramMember" name="PreviousProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_PrivateClientMember" name="PrivateClientMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_ReceivablesfromBrokersDealersandClearingOrganizationsNumberofMajorBrokerDealers" name="ReceivablesfromBrokersDealersandClearingOrganizationsNumberofMajorBrokerDealers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="opy_RegulatoryRequirementsTextBlock" name="RegulatoryRequirementsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_ReportedValueBasisAxis" name="ReportedValueBasisAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_ReportedValueBasisDomain" name="ReportedValueBasisDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_RestrictiveCovenantsExceptionforDividendorDistributionAmountduringfiscalyear" name="RestrictiveCovenantsExceptionforDividendorDistributionAmountduringfiscalyear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="opy_RestrictiveCovenantsExceptionfortotalDividendPaymentandotherRestrictedPayments" name="RestrictiveCovenantsExceptionfortotalDividendPaymentandotherRestrictedPayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_RevenueAllocationPercentage" name="RevenueAllocationPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_RevenuesExcludingRevenueFromContractWithCustomers" name="RevenuesExcludingRevenueFromContractWithCustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="opy_RevenuesExcludingRevenueFromContractWithCustomersOther" name="RevenuesExcludingRevenueFromContractWithCustomersOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_ReverseRepurchaseAgreementMember" name="ReverseRepurchaseAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_SECSCSDInitiativeSettlementAmount" name="SECSCSDInitiativeSettlementAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_ScheduleOfBalanceSheetSupplementalDisclosuresTableTextBlock" name="ScheduleOfBalanceSheetSupplementalDisclosuresTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_ScheduleOfEarningsPerShareBasicAndDilutedLineItems" name="ScheduleOfEarningsPerShareBasicAndDilutedLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_ScheduleOfEarningsPerShareBasicAndDilutedTable" name="ScheduleOfEarningsPerShareBasicAndDilutedTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_ScheduleOfSponsoredFundInvestmentsTableTextBlock" name="ScheduleOfSponsoredFundInvestmentsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_SecuritiesBorrowedAmountNotOffsetAgainstCollateral" name="SecuritiesBorrowedAmountNotOffsetAgainstCollateral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="opy_SecuritiesBorrowedTransactionsMember" name="SecuritiesBorrowedTransactionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_SecuritiesCommittedToPurchasePeriod" name="SecuritiesCommittedToPurchasePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_SecuritiesLoanedAmountNotOffsetAgainstCollateral" name="SecuritiesLoanedAmountNotOffsetAgainstCollateral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_SecuritiesOwnedAndPledgedAsCollateralAmountNotEligibleToBeRepledgedByCounterpartyCarryingValue" name="SecuritiesOwnedAndPledgedAsCollateralAmountNotEligibleToBeRepledgedByCounterpartyCarryingValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_SecuritiesOwnedandSoldNotyetPurchasedatFairValueSecurityOwnedIncludingDisposalGroupSecuritiesOwned" name="SecuritiesOwnedandSoldNotyetPurchasedatFairValueSecurityOwnedIncludingDisposalGroupSecuritiesOwned" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_SecuritiesPurchasedunderAgreementtoResellAmountNotOffsetAgainstCollateral" name="SecuritiesPurchasedunderAgreementtoResellAmountNotOffsetAgainstCollateral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_SecuritiesSoldunderAgreementstoRepurchaseAmountNotOffsetAgainstCollateral" name="SecuritiesSoldunderAgreementstoRepurchaseAmountNotOffsetAgainstCollateral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_SpreadToUSTreasuryRate" name="SpreadToUSTreasuryRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="opy_StockRepurchaseProgramPercentageOfSharesRepurchaseOfOutstandingShare" name="StockRepurchaseProgramPercentageOfSharesRepurchaseOfOutstandingShare" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="opy_StudentLoanAuctionRateSecuritiesMember" name="StudentLoanAuctionRateSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_SubordinatedLoanReceivable" name="SubordinatedLoanReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_SweepInterestIncomefromFDICInsuredBankDeposits" name="SweepInterestIncomefromFDICInsuredBankDeposits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_ThirdPartyMember" name="ThirdPartyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_TierOneCapitalRatioCalculatedUnderCrdFourth" name="TierOneCapitalRatioCalculatedUnderCrdFourth" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="opy_TierOneCapitalRatioRequiredUnderCrdFourth" name="TierOneCapitalRatioRequiredUnderCrdFourth" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="opy_ToBeAnnouncedSecurityMember" name="ToBeAnnouncedSecurityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_TotalCapitalRatioCalculatedUnderCrdFourth" name="TotalCapitalRatioCalculatedUnderCrdFourth" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="opy_TotalCapitalRatioRequiredUnderCrdFourth" name="TotalCapitalRatioRequiredUnderCrdFourth" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="opy_TransactionSettlementPeriod" name="TransactionSettlementPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_TreasuryStockRetiredAmountPerShare" name="TreasuryStockRetiredAmountPerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_USTreasuryRate" name="USTreasuryRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="opy_ValuationAdjustmentForLevelThreeAssetandLiability" name="ValuationAdjustmentForLevelThreeAssetandLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_ValuationAdjustmentForLevelThreeAssets" name="ValuationAdjustmentForLevelThreeAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_ValuationAdjustmentForLevelThreeLiabilities" name="ValuationAdjustmentForLevelThreeLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="opy_VariableInterestEntitiesDisclosureTextBlock" name="VariableInterestEntitiesDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="opy_VariableInterestEntityAbstract" name="VariableInterestEntityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="opy_VariableInterestEntityAssets" name="VariableInterestEntityAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="opy_VestedEmployeeSharePlanAwards" name="VestedEmployeeSharePlanAwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>
