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	<link:roleType roleURI="http://surocap.com/role/ScheduleOfFinancialHighlightsDetailsParenthetical" id="ScheduleOfFinancialHighlightsDetailsParenthetical">
	  <link:definition>00000055 - Disclosure - SCHEDULE OF FINANCIAL HIGHLIGHTS (Details) (Parenthetical)</link:definition>
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	  <link:definition>00000056 - Disclosure - SCHEDULE OF RECLASSIFICATION OF BOOK/TAX DIFFERENCES (Details)</link:definition>
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	  <link:definition>00000057 - Disclosure - SCHEDULE OF TAX CHARACTER OF DISTRIBUTIONS (Details)</link:definition>
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	<link:roleType roleURI="http://surocap.com/role/ScheduleOfComponentsOfDistributedEarningsOnTaxBasisDetails" id="ScheduleOfComponentsOfDistributedEarningsOnTaxBasisDetails">
	  <link:definition>00000058 - Disclosure - SCHEDULE OF COMPONENTS OF DISTRIBUTED EARNINGS ON A TAX BASIS (Details)</link:definition>
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	  <link:definition>00000059 - Disclosure - INCOME TAXES (Details Narrative)</link:definition>
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	  <link:usedOn>link:calculationLink</link:usedOn>
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	  <link:definition>00000060 - Disclosure - SCHEDULE OF DEBT (Details)</link:definition>
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	  <link:definition>00000061 - Disclosure - DEBT CAPITAL ACTIVITIES (Details Narrative)</link:definition>
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	  <link:definition>00000062 - Disclosure - SCHEDULE OF STOCK OPTIONS, VALUATION ASSUMPTIONS (Details)</link:definition>
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	  <link:definition>00000063 - Disclosure - SCHEDULE OF OPTION, ACTIVITY (Details)</link:definition>
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	  <link:usedOn>link:calculationLink</link:usedOn>
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	  <link:definition>00000066 - Disclosure - SCHEDULE OF INVESTMENTS (Details)</link:definition>
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	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
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	<link:roleType roleURI="http://surocap.com/role/ScheduleOfInvestmentsDetailsParenthetical" id="ScheduleOfInvestmentsDetailsParenthetical">
	  <link:definition>00000067 - Disclosure - SCHEDULE OF INVESTMENTS (Details) (Parenthetical)</link:definition>
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	  <link:usedOn>link:calculationLink</link:usedOn>
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	<link:roleType roleURI="http://surocap.com/role/ScheduleOfInvestmentsByCompanyDetails" id="ScheduleOfInvestmentsByCompanyDetails">
	  <link:definition>00000068 - Disclosure - SCHEDULE OF INVESTMENTS BY COMPANY (Details)</link:definition>
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	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
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	<link:roleType roleURI="http://surocap.com/role/SubsequentEventsDetailsNarrative" id="SubsequentEventsDetailsNarrative">
	  <link:definition>00000069 - Disclosure - SUBSEQUENT EVENTS (Details Narrative)</link:definition>
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	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
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	<link:roleType roleURI="http://surocap.com/role/ScheduleOfQuarterlyFinancialDataDetails" id="ScheduleOfQuarterlyFinancialDataDetails">
	  <link:definition>00000070 - Disclosure - SCHEDULE OF QUARTERLY FINANCIAL DATA (Details)</link:definition>
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	  <link:usedOn>link:calculationLink</link:usedOn>
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	<link:linkbaseRef xlink:type="simple" xlink:href="ssss-20221231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Calculation Links" />
	<link:linkbaseRef xlink:type="simple" xlink:href="ssss-20221231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links" />
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    <element id="SSSS_CannabisREITMember" name="CannabisREITMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ShareRepurchaseProgramMember" name="ShareRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_BoardOfDirectorsMember" name="BoardOfDirectorsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ModificationOfDutchAuctionTenderOfferMember" name="ModificationOfDutchAuctionTenderOfferMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_FourPointSevenFivePercentageConvertibleSeniorNotesDueTwoThousandAndTwentyThreeMember" name="FourPointSevenFivePercentageConvertibleSeniorNotesDueTwoThousandAndTwentyThreeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AtTheMarketSalesAgreementMember" name="AtTheMarketSalesAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_NonBindingInvestmentAgreementMember" name="NonBindingInvestmentAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_SixPercentNotesDueTwoThousandAndTwentySixMember" name="SixPercentNotesDueTwoThousandAndTwentySixMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_FourPointSevenFiveConvertibleSeniorNotesDueTwoThousandAndTwentyThreeMember" name="FourPointSevenFiveConvertibleSeniorNotesDueTwoThousandAndTwentyThreeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ModificationOfDutchAuctionTenderOfferAndCashDividendsMember" name="ModificationOfDutchAuctionTenderOfferAndCashDividendsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_FivePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandAndEighteenMember" name="FivePointTwoFivePercentConvertibleSeniorNotesDueTwoThousandAndEighteenMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_WesternAllianceBankMember" name="WesternAllianceBankMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_TwoThousandAndNineteEnquityIncentivePlanMember" name="TwoThousandAndNineteEnquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AmendedAndRestatedTwoThousandAndNineteenEquityIncentivePlanMember" name="AmendedAndRestatedTwoThousandAndNineteenEquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_NonEmployeeDirectorMember" name="NonEmployeeDirectorMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_RestrictedSharesOfCommonStockMember" name="RestrictedSharesOfCommonStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_TwoThousandAndTwentyNonEmployeeDirectorMember" name="TwoThousandAndTwentyNonEmployeeDirectorMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_TwoThousandAndTwentyOneNonEmployeeDirectorMember" name="TwoThousandAndTwentyOneNonEmployeeDirectorMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_RestrictedShareGrantsMember" name="RestrictedShareGrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentsInU.s.TreasuryBillsCost" name="InvestmentsInU.s.TreasuryBillsCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_EscrowProceedsReceivable" name="EscrowProceedsReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InterestAndDividendsReceivable" name="InterestAndDividendsReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AccumulatedNetInvestmentLoss" name="AccumulatedNetInvestmentLoss" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AccumulatedNetRealizedGainOnInvestmentsNetOfDistributions" name="AccumulatedNetRealizedGainOnInvestmentsNetOfDistributions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AccumulatedNetUnrealizedDepreciationAppreciationOfInvestments" name="AccumulatedNetUnrealizedDepreciationAppreciationOfInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentInterestIncomeExpenseNet" name="InvestmentInterestIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_DirectorsFees" name="DirectorsFees" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ChangeInUnrealizedAppreciationdepreciationOfInvestmentsAbstract" name="ChangeInUnrealizedAppreciationdepreciationOfInvestmentsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyDividendDeclared" name="InvestmentCompanyDividendDeclared" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_StockIssuedDuringPeriodValuesShareBasedCompensationGross" name="StockIssuedDuringPeriodValuesShareBasedCompensationGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyCapitalShareTransactions" name="InvestmentCompanyCapitalShareTransactions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_StockRepurchasedForCapitalShareActivity" name="StockRepurchasedForCapitalShareActivity" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_RealizedInvestmentGainLosses" name="RealizedInvestmentGainLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AmortizationOfConvertibleSeniorDebtDiscount" name="AmortizationOfConvertibleSeniorDebtDiscount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AdjustmentsToEscrowProceedsReceivable" name="AdjustmentsToEscrowProceedsReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ForfeitedInterestOnConvertibleSeniorNotes" name="ForfeitedInterestOnConvertibleSeniorNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_PurchasesOfInvestmentsAbstract" name="PurchasesOfInvestmentsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_PurchasesOfPortfolioInvestments" name="PurchasesOfPortfolioInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_PurchasesOfUSTreasuryBillsInvestments" name="PurchasesOfUSTreasuryBillsInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ProceedsFromSalesOrMaturityOfInvestmentsAbstract" name="ProceedsFromSalesOrMaturityOfInvestmentsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ProceedsFromSalesOrMaturityOfInvestmentsPortfolioInvestments" name="ProceedsFromSalesOrMaturityOfInvestmentsPortfolioInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ProceedsFromSalesOrMaturityOfInvestmentsUSTreasuryBills" name="ProceedsFromSalesOrMaturityOfInvestmentsUSTreasuryBills" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_IncreaseDecreaseInProceedsReceivable" name="IncreaseDecreaseInProceedsReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_IncreaseDecreaseInEscrowProceedsReceivable" name="IncreaseDecreaseInEscrowProceedsReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_IncreaseDecreaseInPayableForSecuritiesPurchased" name="IncreaseDecreaseInPayableForSecuritiesPurchased" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ProceedsFromIssuance" name="ProceedsFromIssuance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_RepaymentsOfRedemptionOfConvertibleSeniorNotes" name="RepaymentsOfRedemptionOfConvertibleSeniorNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_PaymentsOfDeferredDebtIssuanceCosts" name="PaymentsOfDeferredDebtIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_CashPaidForFractionalShares" name="CashPaidForFractionalShares" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_StatementConsolidatedScheduleOfInvestmentsAbstract" name="StatementConsolidatedScheduleOfInvestmentsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentIndustryDescription" name="InvestmentIndustryDescription" nillable="true" xbrli:periodType="instant" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InitialInvestmentDate" name="InitialInvestmentDate" nillable="true" xbrli:periodType="instant" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_CapitalCommitment" name="CapitalCommitment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ProceedsFromInvestment" name="ProceedsFromInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_NumberOfWarrantsConvertedToCommonStock" name="NumberOfWarrantsConvertedToCommonStock" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_RemainingCommonStockIssued" name="RemainingCommonStockIssued" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_UncertaintiesAndRiskFactorsPolicyTextBlock" name="UncertaintiesAndRiskFactorsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentTransactionCostsAndEscrowDepositsPolicyTextBlock" name="InvestmentTransactionCostsAndEscrowDepositsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_UnrealizedAppreciationOrDepreciationOfInvestmentsPolicyTextBlock" name="UnrealizedAppreciationOrDepreciationOfInvestmentsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ScheduleOfSubsidiariesOfCompanyTableTextBlock" name="ScheduleOfSubsidiariesOfCompanyTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ScheduleOfDeferredFinancingCostsTableTextBlock" name="ScheduleOfDeferredFinancingCostsTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ScheduleOfReclassificationOfBookTaxDifferencesTableTextBlock" name="ScheduleOfReclassificationOfBookTaxDifferencesTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ScheduleOfTaxCharacterOfDistributionsTableTextBlock" name="ScheduleOfTaxCharacterOfDistributionsTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ScheduleOfInvestmentsTableTextBlock" name="ScheduleOfInvestmentsTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentOwnedPercentOfInvestmentPortfolio" name="InvestmentOwnedPercentOfInvestmentPortfolio" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ValuationTechniqueAndInputDescription" name="ValuationTechniqueAndInputDescription" nillable="true" xbrli:periodType="instant" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_UnobservationInputDescription" name="UnobservationInputDescription" nillable="true" xbrli:periodType="instant" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainAndLoss" name="FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainAndLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_FairValueAssetRecurringBasisStillHeldUnrealizedGainAndLossOci" name="FairValueAssetRecurringBasisStillHeldUnrealizedGainAndLossOci" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_NumberOfPositions" name="NumberOfPositions" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_NumberOfPortfolioCompanies" name="NumberOfPortfolioCompanies" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_RedeemedAggregatePrincipalAmount" name="RedeemedAggregatePrincipalAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_PercentageOfSalesPrice" name="PercentageOfSalesPrice" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_IncomeLossFromContinuingOperationsDiluted" name="IncomeLossFromContinuingOperationsDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AdjustmentForInterestAndAmortization" name="AdjustmentForInterestAndAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_NetChangeInNetAssetsResultingFromOperationsAsAdjustedDiluted" name="NetChangeInNetAssetsResultingFromOperationsAsAdjustedDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AdjustmentForDilutiveEffect" name="AdjustmentForDilutiveEffect" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_OperatingLeaseLiabilities" name="OperatingLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_OperatingLeaseRightOfUseAssets" name="OperatingLeaseRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyUnrealizedInvestmentIncomeLossOnPartialRepurchase" name="InvestmentCompanyUnrealizedInvestmentIncomeLossOnPartialRepurchase" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyUnrealizedInvestmentIncomeLossFromOperationsPerShare" name="InvestmentCompanyUnrealizedInvestmentIncomeLossFromOperationsPerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyUnrealizedInvestmentIncomeLossProvisionForTaxesOnUnrealizedAppreciationOfInvestments" name="InvestmentCompanyUnrealizedInvestmentIncomeLossProvisionForTaxesOnUnrealizedAppreciationOfInvestments" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyIssuanceOfCommonStockFromStockDividend" name="InvestmentCompanyIssuanceOfCommonStockFromStockDividend" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyIssuanceOfferingPerShare" name="InvestmentCompanyIssuanceOfferingPerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyConversionUnitPerShare" name="InvestmentCompanyConversionUnitPerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyRepurchasePerShare" name="InvestmentCompanyRepurchasePerShare" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyShareBasedCompensationArrangementByShareBasedPayment" name="InvestmentCompanyShareBasedCompensationArrangementByShareBasedPayment" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_MarketValueValuePerShare" name="MarketValueValuePerShare" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyTotalReturnBasedonMarketValue" name="InvestmentCompanyTotalReturnBasedonMarketValue" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_AverageNetAsset" name="AverageNetAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyTurnoverRatioAfterIncentiveAllocation" name="InvestmentCompanyTurnoverRatioAfterIncentiveAllocation" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_NonRecurringExpense" name="NonRecurringExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_CapitalInExcessOfParValue" name="CapitalInExcessOfParValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyOrdinaryIncome" name="InvestmentCompanyOrdinaryIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_LongTermCapitalGain" name="LongTermCapitalGain" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentCompanyInvestmentIncomeNet" name="InvestmentCompanyInvestmentIncomeNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_DebtConversionConvertibleAmount" name="DebtConversionConvertibleAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_DebtRedemptionConvertibleAmount" name="DebtRedemptionConvertibleAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_DirectDeductionOfDeferredDebtIssuanceCosts" name="DirectDeductionOfDeferredDebtIssuanceCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ClosingMarketPricePerNote" name="ClosingMarketPricePerNote" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_DebtInstrumentRedemptionDateDescription" name="DebtInstrumentRedemptionDateDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_DebtInstrumentRedemptionAmountPerConvertibleNote" name="DebtInstrumentRedemptionAmountPerConvertibleNote" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_DebtInstrumentRedemptionAmount" name="DebtInstrumentRedemptionAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_LineOfCreditMinimumMaintainBalance" name="LineOfCreditMinimumMaintainBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_LineOfCreditMaturityDate" name="LineOfCreditMaturityDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExercisableWeightedAverageGrantDateFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExercisableWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsVestedAndExpectedToVestOutstandingNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsVestedAndExpectedToVestOutstandingNumber" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_StockOwnershipPercentage" name="StockOwnershipPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_UnrecognizedShareBasedCompensation" name="UnrecognizedShareBasedCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_StockIssuedDuringPeriodSharesRestrictedStockAwardValue" name="StockIssuedDuringPeriodSharesRestrictedStockAwardValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_CommonStockHeld" name="CommonStockHeld" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentDescription" name="InvestmentDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_NonbindingInvestment" name="NonbindingInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_LocusRoboticsIncMember" name="LocusRoboticsIncMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_CommonStockHeldRestriction" name="CommonStockHeldRestriction" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_InvestmentNetAssetsFromOperationsIncreaseDecrease" name="InvestmentNetAssetsFromOperationsIncreaseDecrease" nillable="true" xbrli:periodType="duration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_VaroMoneyMember" name="VaroMoneyMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SSSS_RealizedInvestmentLosses" name="RealizedInvestmentLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
