<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: QXInteractive; Version: 3.2d -->
    <!-- Field: Doc-Info; Name: Source; Value: SOHL 03312012 10Q1.xfr; Date: 2012/06/15T13:41:13 -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef roleURI="http://stshc.com/role/DocumentAndEntityInformation" xlink:href="sohl-20120331.xsd#DocumentAndEntityInformation" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/ConsolidatedStatementsOfFinancialCondition" xlink:href="sohl-20120331.xsd#ConsolidatedStatementsOfFinancialCondition" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/ConsolidatedStatementsOfFinancialConditionParenthetical" xlink:href="sohl-20120331.xsd#ConsolidatedStatementsOfFinancialConditionParenthetical" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/ConsolidatedStatementsOfOperations" xlink:href="sohl-20120331.xsd#ConsolidatedStatementsOfOperations" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/ConsolidatedStatementsOfChangesInShareholdersEquity" xlink:href="sohl-20120331.xsd#ConsolidatedStatementsOfChangesInShareholdersEquity" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/ConsolidatedStatementsOfCashFlows" xlink:href="sohl-20120331.xsd#ConsolidatedStatementsOfCashFlows" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/BasisOfPresentation" xlink:href="sohl-20120331.xsd#BasisOfPresentation" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/NatureOfOperations" xlink:href="sohl-20120331.xsd#NatureOfOperations" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/Liquidity" xlink:href="sohl-20120331.xsd#Liquidity" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="sohl-20120331.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/ClearingArrangements" xlink:href="sohl-20120331.xsd#ClearingArrangements" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/FairValueMeasurements" xlink:href="sohl-20120331.xsd#FairValueMeasurements" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/PropertyAndEquipmentNet" xlink:href="sohl-20120331.xsd#PropertyAndEquipmentNet" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/NotesPayable" xlink:href="sohl-20120331.xsd#NotesPayable" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/IncomeTaxes" xlink:href="sohl-20120331.xsd#IncomeTaxes" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/CommonStock" xlink:href="sohl-20120331.xsd#CommonStock" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/PreferredStock" xlink:href="sohl-20120331.xsd#PreferredStock" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/StockOptions" xlink:href="sohl-20120331.xsd#StockOptions" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/NetCapitalRequirement" xlink:href="sohl-20120331.xsd#NetCapitalRequirement" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/ExemptionFromRule15C3-3" xlink:href="sohl-20120331.xsd#ExemptionFromRule15C3-3" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/ConcentrationOfRisk" xlink:href="sohl-20120331.xsd#ConcentrationOfRisk" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/CommitmentsAndContingencies" xlink:href="sohl-20120331.xsd#CommitmentsAndContingencies" xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/InvestmentInArGrowthFinanceCorp." xlink:href="sohl-20120331.xsd#InvestmentInArGrowthFinanceCorp." xlink:type="simple" />
    <link:roleRef roleURI="http://stshc.com/role/SubsequentEvents" xlink:href="sohl-20120331.xsd#SubsequentEvents" xlink:type="simple" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/DocumentAndEntityInformation" xlink:title="0001 - Document - Document and Entity Information" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/ConsolidatedStatementsOfFinancialCondition" xlink:title="0002 - Statement - Consolidated Statements of Financial Condition" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/ConsolidatedStatementsOfFinancialConditionParenthetical" xlink:title="0003 - Statement - Consolidated Statements of Financial Condition (Parenthetical)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/ConsolidatedStatementsOfOperations" xlink:title="0004 - Statement - Consolidated Statements of Operations (Unaudited)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/ConsolidatedStatementsOfChangesInShareholdersEquity" xlink:title="0005 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_SOHLStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_SOHLStatementTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLStatementTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_SOHLStatementEquityComponentsAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_SOHLStatementTable" xlink:to="loc_SOHLStatementEquityComponentsAxis" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_SOHLEquityComponentDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_SOHLStatementEquityComponentsAxis" xlink:to="loc_SOHLEquityComponentDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_SOHLEquityComponentDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_SOHLStatementEquityComponentsAxis" xlink:to="loc_SOHLEquityComponentDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="loc_SOHLPreferredStockMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLEquityComponentDomain" xlink:to="loc_SOHLPreferredStockMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_SOHLCommonStockMember_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLEquityComponentDomain" xlink:to="loc_SOHLCommonStockMember_10" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_SOHLAdditionalPaidInCapitalMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLEquityComponentDomain" xlink:to="loc_SOHLAdditionalPaidInCapitalMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_SOHLRetainedEarningsMember_30" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLEquityComponentDomain" xlink:to="loc_SOHLRetainedEarningsMember_30" xlink:type="arc" order="31" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_SOHLAccumulatedOtherComprehensiveIncomeMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLEquityComponentDomain" xlink:to="loc_SOHLAccumulatedOtherComprehensiveIncomeMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="sohl-20120331.xsd#SOHL_TotalStockholdersEquityMember" xlink:label="loc_SOHLTotalStockholdersEquityMember_50" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLEquityComponentDomain" xlink:to="loc_SOHLTotalStockholdersEquityMember_50" xlink:type="arc" order="51" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_SOHLNoncontrollingInterestMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLEquityComponentDomain" xlink:to="loc_SOHLNoncontrollingInterestMember_60" xlink:type="arc" order="61" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="loc_SOHLSharesOutstanding_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLSharesOutstanding_90" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_SOHLStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_90" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets" xlink:label="loc_SOHLNewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLNewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets_90" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_SOHLShareBasedCompensation_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLShareBasedCompensation_90" xlink:type="arc" order="7" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_SOHLStockIssuedDuringPeriodSharesNewIssues_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLStockIssuedDuringPeriodSharesNewIssues_90" xlink:type="arc" order="9" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="loc_SOHLStockIssuedDuringPeriodValueNewIssues_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLStockIssuedDuringPeriodValueNewIssues_90" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="loc_SOHLSaleOfStockNumberOfSharesIssuedInTransaction_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLSaleOfStockNumberOfSharesIssuedInTransaction_90" xlink:type="arc" order="11" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MinorityInterestIncreaseFromStockIssuance" xlink:label="loc_SOHLMinorityInterestIncreaseFromStockIssuance_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLMinorityInterestIncreaseFromStockIssuance_90" xlink:type="arc" order="12" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockDividendsAndOtherAdjustments" xlink:label="loc_SOHLPreferredStockDividendsAndOtherAdjustments_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLPreferredStockDividendsAndOtherAdjustments_90" xlink:type="arc" order="13" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract" xlink:label="loc_SOHLOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLStatementLineItems" xlink:to="loc_SOHLOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_90" xlink:type="arc" order="15" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_SOHLNetIncomeLoss_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_90" xlink:to="loc_SOHLNetIncomeLoss_90" xlink:type="arc" order="16" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax" xlink:label="loc_SOHLOtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_90" xlink:to="loc_SOHLOtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_90" xlink:type="arc" order="17" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_SOHLComprehensiveIncomeNetOfTax_90" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_SOHLOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_90" xlink:to="loc_SOHLComprehensiveIncomeNetOfTax_90" xlink:type="arc" order="18" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/ConsolidatedStatementsOfCashFlows" xlink:title="0006 - Statement - Consolidated Statements of Cash Flows (Unaudited)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/BasisOfPresentation" xlink:title="0007 - Disclosure - Basis of Presentation" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/NatureOfOperations" xlink:title="0008 - Disclosure - Nature of operations" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/Liquidity" xlink:title="0009 - Disclosure - Liquidity" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/SummaryOfSignificantAccountingPolicies" xlink:title="0010 - Disclosure - Summary of significant accounting policies" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/ClearingArrangements" xlink:title="0011 - Disclosure - Clearing Arrangements" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/FairValueMeasurements" xlink:title="0012 - Disclosure - Fair value measurements" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/PropertyAndEquipmentNet" xlink:title="0013 - Disclosure - Property and equipment, net" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/NotesPayable" xlink:title="0014 - Disclosure - Notes Payable" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/IncomeTaxes" xlink:title="0015 - Disclosure - Income taxes" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/CommonStock" xlink:title="0016 - Disclosure - Common stock" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/PreferredStock" xlink:title="0017 - Disclosure - Preferred stock" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/StockOptions" xlink:title="0018 - Disclosure - Stock options" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/NetCapitalRequirement" xlink:title="0019 - Disclosure - Net capital requirement" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/ExemptionFromRule15C3-3" xlink:title="0020 - Disclosure - Exemption from Rule 15c3-3" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/ConcentrationOfRisk" xlink:title="0021 - Disclosure - Concentration of risk" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/CommitmentsAndContingencies" xlink:title="0022 - Disclosure - Commitments and contingencies" />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/InvestmentInArGrowthFinanceCorp." xlink:title="0023 - Disclosure - Investment in AR Growth Finance Corp." />
    <link:definitionLink xlink:type="extended" xlink:role="http://stshc.com/role/SubsequentEvents" xlink:title="0024 - Disclosure - Subsequent events" />
</link:linkbase>
