<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created by RR Donnelley IM Processor 5.0.0.0 using Fujitsu Interstage XWand-->
<schema targetNamespace="http://www.fidelity.com/20121204" elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:fhst2="http://www.fidelity.com/20121204" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric">
  <annotation>
    <appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="fhst2-20121204_pre.xml" xlink:title="Presentation Links, all" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="fhst2-20121204_cal.xml" xlink:title="Calculation Links, all" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="fhst2-20121204_def.xml" xlink:title="Definition Links, all" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="fhst2-20121204_lab.xml" xlink:title="Label Links, all" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentDocumentandEntityInformation" id="DocumentDocumentandEntityInformation">
        <link:definition>000000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelitySeriesMegaCapFund" id="DocumentRiskReturnSummaryUnlabeledFidelitySeriesMegaCapFund">
        <link:definition>000011 - Document - Risk/Return Summary {Unlabeled} - Fidelity Series Mega Cap Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleShareholderFeesFidelitySeriesMegaCapFund" id="ScheduleShareholderFeesFidelitySeriesMegaCapFund">
        <link:definition>000012 - Schedule - Shareholder Fees {- Fidelity Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelitySeriesMegaCapFund" id="ScheduleAnnualClassOperatingExpensesFidelitySeriesMegaCapFund">
        <link:definition>000013 - Schedule - Annual Class Operating Expenses {- Fidelity Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleFidelitySeriesMegaCapFund" id="ScheduleExpenseExampleFidelitySeriesMegaCapFund">
        <link:definition>000014 - Schedule - Expense Example {- Fidelity Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionTransposedFidelitySeriesMegaCapFund" id="ScheduleExpenseExampleNoRedemptionTransposedFidelitySeriesMegaCapFund">
        <link:definition>000015 - Schedule - Expense Example, No Redemption {Transposed} {- Fidelity Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelitySeriesMegaCapFundBarChart" id="ScheduleAnnualTotalReturnsFidelitySeriesMegaCapFundBarChart">
        <link:definition>000016 - Schedule - Annual Total Returns - Fidelity Series Mega Cap Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelitySeriesMegaCapFund" id="ScheduleAverageAnnualTotalReturnsTransposedFidelitySeriesMegaCapFund">
        <link:definition>000017 - Schedule - Average Annual Total Returns {Transposed} {- Fidelity Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnDetailUnlabeledFidelitySeriesMegaCapFund" id="DocumentRiskReturnDetailUnlabeledFidelitySeriesMegaCapFund">
        <link:definition>000018 - Document - Risk/Return Detail {Unlabeled} - Fidelity Series Mega Cap Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelitySeriesMegaCapFund" id="DisclosureRiskReturnDetailDataElementsFidelitySeriesMegaCapFund">
        <link:definition>000019 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Series Mega Cap Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelitySeriesMegaCapFundClassF" id="DocumentRiskReturnSummaryUnlabeledFidelitySeriesMegaCapFundClassF">
        <link:definition>000021 - Document - Risk/Return Summary {Unlabeled} - Fidelity Series Mega Cap Fund Class F</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleShareholderFeesFidelitySeriesMegaCapFundClassF" id="ScheduleShareholderFeesFidelitySeriesMegaCapFundClassF">
        <link:definition>000022 - Schedule - Shareholder Fees {- Fidelity Series Mega Cap Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualClassOperatingExpensesFidelitySeriesMegaCapFundClassF" id="ScheduleAnnualClassOperatingExpensesFidelitySeriesMegaCapFundClassF">
        <link:definition>000023 - Schedule - Annual Class Operating Expenses {- Fidelity Series Mega Cap Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleFidelitySeriesMegaCapFundClassF" id="ScheduleExpenseExampleFidelitySeriesMegaCapFundClassF">
        <link:definition>000024 - Schedule - Expense Example  {- Fidelity Series Mega Cap Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionTransposedFidelitySeriesMegaCapFundClassF" id="ScheduleExpenseExampleNoRedemptionTransposedFidelitySeriesMegaCapFundClassF">
        <link:definition>000025 - Schedule - Expense Example, No Redemption {Transposed} {- Fidelity Series Mega Cap Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelitySeriesMegaCapFundClassFBarChart" id="ScheduleAnnualTotalReturnsFidelitySeriesMegaCapFundClassFBarChart">
        <link:definition>000026 - Schedule - Annual Total Returns - Fidelity Series Mega Cap Fund Class F [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelitySeriesMegaCapFundClassF" id="ScheduleAverageAnnualTotalReturnsTransposedFidelitySeriesMegaCapFundClassF">
        <link:definition>000027 - Schedule - Average Annual Total Returns {Transposed} {- Fidelity Series Mega Cap Fund Class F}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnDetailUnlabeledFidelitySeriesMegaCapFundClassF" id="DocumentRiskReturnDetailUnlabeledFidelitySeriesMegaCapFundClassF">
        <link:definition>000028 - Document - Risk/Return Detail {Unlabeled} - Fidelity Series Mega Cap Fund Class F</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelitySeriesMegaCapFundClassF" id="DisclosureRiskReturnDetailDataElementsFidelitySeriesMegaCapFundClassF">
        <link:definition>000029 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Series Mega Cap Fund Class F</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAdvisorSeriesMegaCapFund" id="DocumentRiskReturnSummaryUnlabeledFidelityAdvisorSeriesMegaCapFund">
        <link:definition>000031 - Document - Risk/Return Summary {Unlabeled} - Fidelity Advisor Series Mega Cap Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleShareholderFeesFidelityAdvisorSeriesMegaCapFund" id="ScheduleShareholderFeesFidelityAdvisorSeriesMegaCapFund">
        <link:definition>000032 - Schedule - Shareholder Fees {- Fidelity Advisor Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualFundOperatingExpensesFidelityAdvisorSeriesMegaCapFund" id="ScheduleAnnualFundOperatingExpensesFidelityAdvisorSeriesMegaCapFund">
        <link:definition>000033 - Schedule - Annual Fund Operating Expenses {- Fidelity Advisor Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleFidelityAdvisorSeriesMegaCapFund" id="ScheduleExpenseExampleFidelityAdvisorSeriesMegaCapFund">
        <link:definition>000034 - Schedule - Expense Example {- Fidelity Advisor Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleExpenseExampleNoRedemptionTransposedFidelityAdvisorSeriesMegaCapFund" id="ScheduleExpenseExampleNoRedemptionTransposedFidelityAdvisorSeriesMegaCapFund">
        <link:definition>000035 - Schedule - Expense Example, No Redemption {Transposed} {- Fidelity Advisor Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAnnualTotalReturnsFidelityAdvisorSeriesMegaCapFundBarChart" id="ScheduleAnnualTotalReturnsFidelityAdvisorSeriesMegaCapFundBarChart">
        <link:definition>000036 - Schedule - Annual Total Returns - Fidelity Advisor Series Mega Cap Fund [BarChart]</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorSeriesMegaCapFund" id="ScheduleAverageAnnualTotalReturnsTransposedFidelityAdvisorSeriesMegaCapFund">
        <link:definition>000037 - Schedule - Average Annual Total Returns {Transposed} {- Fidelity Advisor Series Mega Cap Fund}</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DocumentRiskReturnDetailUnlabeledFidelityAdvisorSeriesMegaCapFund" id="DocumentRiskReturnDetailUnlabeledFidelityAdvisorSeriesMegaCapFund">
        <link:definition>000038 - Document - Risk/Return Detail {Unlabeled} - Fidelity Advisor Series Mega Cap Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAdvisorSeriesMegaCapFund" id="DisclosureRiskReturnDetailDataElementsFidelityAdvisorSeriesMegaCapFund">
        <link:definition>000039 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Advisor Series Mega Cap Fund</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.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/rr/2012-01-31" schemaLocation="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <element name="SeriesMember" id="fhst2_SeriesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000039214Member" id="fhst2_S000039214Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000120647Member" id="fhst2_C000120647Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="FMember" id="fhst2_FMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000120648Member" id="fhst2_C000120648Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="S000039215Member" id="fhst2_S000039215Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element name="C000120649Member" id="fhst2_C000120649Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
</schema>
