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  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <import namespace="http://fasb.org/us-gaap/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2012-01-31" schemaLocation="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd" />
  <import namespace="http://xbrl.sec.gov/exch/2012-01-31" schemaLocation="http://xbrl.sec.gov/exch/2012/exch-2012-01-31.xsd" />
  <import namespace="http://xbrl.sec.gov/country/2012-01-31" schemaLocation="http://xbrl.sec.gov/country/2012/country-2012-01-31.xsd" />
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <import namespace="http://xbrl.sec.gov/invest/2012-01-31" schemaLocation="http://xbrl.sec.gov/invest/2012/invest-2012-01-31.xsd" />
  <!-- elements -->
  <element id="opy_ExcessOfFairValueOfAcquiredAssetsOverCost" name="ExcessOfFairValueOfAcquiredAssetsOverCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_AmortizationOfNotesReceivable" name="AmortizationOfNotesReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="opy_IncreaseDecreaseDepositsWithClearingOrganizations" name="IncreaseDecreaseDepositsWithClearingOrganizations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="opy_IncreaseDecreaseInDraftPayable" name="IncreaseDecreaseInDraftPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="opy_EmployeeSharePlanIssuance" name="EmployeeSharePlanIssuance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="opy_IncreaseDecreaseInCashAndSecuritiesSegregatedForRegulatoryAndOtherPurposes" name="IncreaseDecreaseInCashAndSecuritiesSegregatedForRegulatoryAndOtherPurposes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="opy_IncreaseDecreaseInBankCallLoansNet" name="IncreaseDecreaseInBankCallLoansNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="opy_VestedEmployeeSharePlanAwards" name="VestedEmployeeSharePlanAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="opy_SummaryOfSignificantAccountingPoliciesTextualAbstract" name="SummaryOfSignificantAccountingPoliciesTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_OmnibusAccounts" name="OmnibusAccounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_RevisionToFinancialStatementsTextualAbstract" name="RevisionToFinancialStatementsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_USAgencyObligationsMember" name="USAgencyObligationsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesIssuances" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesIssuances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesSettlements" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesSettlements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesPurchasesIssuances" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesPurchasesIssuances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="opy_DerivativeProductAxis" name="DerivativeProductAxis" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" />
  <element id="opy_DerivativeProductDomain" name="DerivativeProductDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_UsTreasuryFuturesMember" name="UsTreasuryFuturesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FederalFundsFuturesMember" name="FederalFundsFuturesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_AuctionRateSecuritiesPurchaseCommitmentMember" name="AuctionRateSecuritiesPurchaseCommitmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_SeniorSecuredCreditNoteMember" name="SeniorSecuredCreditNoteMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_LongTermDebtTextualAbstract" name="LongTermDebtTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_CapitalMarketsMember" name="CapitalMarketsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_SegmentGeographicalGroupsOfCountriesGroupThreeMember" name="SegmentGeographicalGroupsOfCountriesGroupThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_AssetManagementRevenue" name="AssetManagementRevenue" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_SegmentInformationTextualAbstract" name="SegmentInformationTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_OppenheimerMember" name="OppenheimerMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FreedomMember" name="FreedomMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_OppenheimerEuropeMember" name="OppenheimerEuropeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_OppenheimerInvestmentsAsiaMember" name="OppenheimerInvestmentsAsiaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_DepositWithClearingOrganizationsAndOthersSecurities" name="DepositWithClearingOrganizationsAndOthersSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_SubsequentEventsTextualAbstract" name="SubsequentEventsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FinancialInstrumentsTextualAbstract" name="FinancialInstrumentsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_CommonStockClassOneNonVotingMember" name="CommonStockClassOneNonVotingMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_CibcWorldMarketsMember" name="CibcWorldMarketsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_ClassOfWarrantOrRightExercisablePriceStockPurchase" name="ClassOfWarrantOrRightExercisablePriceStockPurchase" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_ClassOfWarrantOrRightTermExercisePeriod" name="ClassOfWarrantOrRightTermExercisePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_RequiredPercentageOfNetCapitalToAggregateCustomerRelatedDebitItems" name="RequiredPercentageOfNetCapitalToAggregateCustomerRelatedDebitItems" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_ActualPercentageOfNetCapitalToAggregateCustomerRelatedDebitItems" name="ActualPercentageOfNetCapitalToAggregateCustomerRelatedDebitItems" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBrokersAndDealersTable" name="ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBrokersAndDealersTable" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" xbrli:periodType="duration" />
  <element id="opy_ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBrokersAndDealersLineItems" name="ScheduleOfComplianceWithRegulatoryCapitalRequirementsUnderBrokersAndDealersLineItems" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_PercentageOfNetCapitalToAggregateIndebtedness" name="PercentageOfNetCapitalToAggregateIndebtedness" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_PrivateClientMember" name="PrivateClientMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_MajorityInterestOwnershipPercentageByParent" name="MajorityInterestOwnershipPercentageByParent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="opy_UnrecognizedTaxBenefitsAndInterestAccrued" name="UnrecognizedTaxBenefitsAndInterestAccrued" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="opy_CurrentAndDeferredTaxCumulativeAdjustmentPriorPeriod" name="CurrentAndDeferredTaxCumulativeAdjustmentPriorPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="opy_GoodwillImpairmentTestingPolicyTextBlock" name="GoodwillImpairmentTestingPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_TermOfSeniorSecuredCreditNote" name="TermOfSeniorSecuredCreditNote" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_SubordinatedLoanReceivable" name="SubordinatedLoanReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_ScheduleOfSponsoredFundInvestmentsTableTextBlock" name="ScheduleOfSponsoredFundInvestmentsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_CorporateEquitiesMember" name="CorporateEquitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_OtherSecuritiesMember" name="OtherSecuritiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_OtherSecuritiesAssetsMember" name="OtherSecuritiesAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_VariableInterestEntityAssets" name="VariableInterestEntityAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_CorporateEquitiesLiabilitiesMember" name="CorporateEquitiesLiabilitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_SecuritiesCommittedToPurchaseAmount" name="SecuritiesCommittedToPurchaseAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_SecuritiesCommittedToPurchasePeriod" name="SecuritiesCommittedToPurchasePeriod" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FairValueMeasurementWithUnobservableInputsReclassificationTransfersIntoLevelUnrealizedLoss" name="FairValueMeasurementWithUnobservableInputsReclassificationTransfersIntoLevelUnrealizedLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_FairValueOfSecuritiesReverseRepurchaseAgreement" name="FairValueOfSecuritiesReverseRepurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_FairValueOfSecuritiesRepurchaseAgreement" name="FairValueOfSecuritiesRepurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_MaximumSettlementPeriodInCaseOfDelayedDeliveryOfUnderlyingInstrument" name="MaximumSettlementPeriodInCaseOfDelayedDeliveryOfUnderlyingInstrument" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_LoanPurchasedUnderCommitmentFromFederalHousingAdministration" name="LoanPurchasedUnderCommitmentFromFederalHousingAdministration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_UsTreasuryNotesOpenFutureContractsWrittenNumberOfContracts" name="UsTreasuryNotesOpenFutureContractsWrittenNumberOfContracts" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="opy_OpenFutureContractsWrittenExpiryPeriod" name="OpenFutureContractsWrittenExpiryPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_OpenFutureContractsWrittenNumberOfContracts" name="OpenFutureContractsWrittenNumberOfContracts" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="opy_FederalFundMember" name="FederalFundMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_BankCallLoan" name="BankCallLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_TypeOfCustomerAxis" name="TypeOfCustomerAxis" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" />
  <element id="opy_TypeOfCustomerDomain" name="TypeOfCustomerDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_MarginDepositedWithOptionClearingCorporation" name="MarginDepositedWithOptionClearingCorporation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_GrossBalanceOfReverseRepurchaseAgreement" name="GrossBalanceOfReverseRepurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_GrossBalanceOfRepurchaseAgreement" name="GrossBalanceOfRepurchaseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_ReverseRepurchaseAgreementMember" name="ReverseRepurchaseAgreementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_PledgedSecuritiesOwnedAndPledgedAsCollateralAmountEligibleToBeRepledgedByCounterpartyCarryingValue" name="PledgedSecuritiesOwnedAndPledgedAsCollateralAmountEligibleToBeRepledgedByCounterpartyCarryingValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_SecuritiesOwnedAndPledgedAsCollateralAmountNotEligibleToBeRepledgedByCounterpartyCarryingValue" name="SecuritiesOwnedAndPledgedAsCollateralAmountNotEligibleToBeRepledgedByCounterpartyCarryingValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_SecuritiesOwnedAndPledgedAsCollateralAmountNotBeRepledgedByCounterpartyFairValueValue" name="SecuritiesOwnedAndPledgedAsCollateralAmountNotBeRepledgedByCounterpartyFairValueValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_BrokerDealersAndUnderwritersDomain" name="BrokerDealersAndUnderwritersDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FinancialInstrumentAtFairValueTable" name="FinancialInstrumentAtFairValueTable" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" xbrli:periodType="duration" />
  <element id="opy_AggregatePrincipalLoanUnderwrittenAgainstWarehouseFacilityMaximum" name="AggregatePrincipalLoanUnderwrittenAgainstWarehouseFacilityMaximum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_AggregatePrincipalLoanUnderwrittenAgainstWarehouseFacilityUtilized" name="AggregatePrincipalLoanUnderwrittenAgainstWarehouseFacilityUtilized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_ExcessRetentionLoanUnderwrittenAgainstWarehouseFacilityUtilized" name="ExcessRetentionLoanUnderwrittenAgainstWarehouseFacilityUtilized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="opy_MortgageLoanGuaranteePeriodDays" name="MortgageLoanGuaranteePeriodDays" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="opy_MortgageLoansOnRealEstateInterestRateDescription" name="MortgageLoansOnRealEstateInterestRateDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_MortgageLoanOnRealEstateInterestBasisMarginRate" name="MortgageLoanOnRealEstateInterestBasisMarginRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_MortgageLoanOnRealEstateInterestAmount" name="MortgageLoanOnRealEstateInterestAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="opy_ScheduleOfRevenueFromExternalCustomerBySegmentTableTextBlock" name="ScheduleOfRevenueFromExternalCustomerBySegmentTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_NetCapitalRequirementsTextualAbstract" name="NetCapitalRequirementsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_CashDividendMember" name="CashDividendMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_RevisionToFinancialStatementsTextBlock" name="RevisionToFinancialStatementsTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_OccupancyAndEquipmentCosts" name="OccupancyAndEquipmentCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="opy_DerivativesForTradingAndInvestmentMember" name="DerivativesForTradingAndInvestmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_BrokersAndDealersProprietaryTradingAccount" name="BrokersAndDealersProprietaryTradingAccount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_OtherThanCorporateCustomerMember" name="OtherThanCorporateCustomerMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_SecuritiesBorrowedTransactionsMember" name="SecuritiesBorrowedTransactionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_BrokerDealersAndUnderwritersAxis" name="BrokerDealersAndUnderwritersAxis" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" />
  <element id="opy_LehmanBrothersInternationalEuropeMember" name="LehmanBrothersInternationalEuropeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FinancingCommitmentUnderRevolvingCreditLeveragedTransactions" name="FinancingCommitmentUnderRevolvingCreditLeveragedTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="opy_FinancialInstrumentAtFairValueLineItems" name="FinancialInstrumentAtFairValueLineItems" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_CommonStockClassOneAndTwoMember" name="CommonStockClassOneAndTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="opy_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesSalesSettlements" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesSalesSettlements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
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