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          <ccc>XXXXXXXX</ccc>
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      <regFileNumber>811-09631</regFileNumber>
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      <regStreet1>1166 Avenue of the Americas,</regStreet1>
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      <regCity>NEW YORK</regCity>
      <regStateConditional regCountry="US" regState="US-NY"/>
      <regZipOrPostalCode>10036</regZipOrPostalCode>
      <regPhone>212-832-3232</regPhone>
      <seriesName>Cohen &amp; Steers Institutional Realty Shares</seriesName>
      <seriesId>S000011976</seriesId>
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      <repPdEnd>2025-12-31</repPdEnd>
      <repPdDate>2025-06-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
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      <totLiabs>77774175.39</totLiabs>
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        <name>Realty Income Corp</name>
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        <name>Kimco Realty Corp</name>
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        <title>Kimco Realty Corp</title>
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          <isin value="US49446R1095"/>
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        <balance>7217272.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>151707057.44000000</valUSD>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Hudson Pacific Properties Inc</name>
        <lei>N/A</lei>
        <title>Hudson Pacific Properties Inc</title>
        <cusip>444097109</cusip>
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          <isin value="US4440971095"/>
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        <balance>7709029.00000000</balance>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Essex Property Trust Inc</name>
        <lei>549300TR2H2VEFX0NC60</lei>
        <title>Essex Property Trust Inc</title>
        <cusip>297178105</cusip>
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          <isin value="US2971781057"/>
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        <balance>853041.00000000</balance>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerConditional desc="REIT" issuerCat="OTHER"/>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Iron Mountain Inc</name>
        <lei>SQL3F6CKNNBM3SQGHX24</lei>
        <title>Iron Mountain Inc</title>
        <cusip>46284V101</cusip>
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          <isin value="US46284V1017"/>
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        <balance>2126564.00000000</balance>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerConditional desc="REIT" issuerCat="OTHER"/>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>SBA Communications Corp</name>
        <lei>5299001HX8ZN8Y8QIT49</lei>
        <title>SBA Communications Corp</title>
        <cusip>78410G104</cusip>
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          <isin value="US78410G1040"/>
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        <balance>968697.00000000</balance>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerConditional desc="REIT" issuerCat="OTHER"/>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Boyd Gaming Corp</name>
        <lei>254900787YGRYS2A1Z35</lei>
        <title>Boyd Gaming Corp</title>
        <cusip>103304101</cusip>
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          <isin value="US1033041013"/>
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        <balance>1034864.00000000</balance>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Kilroy Realty Corp</name>
        <lei>549300CXXI18B214UN80</lei>
        <title>Kilroy Realty Corp</title>
        <cusip>49427F108</cusip>
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          <isin value="US49427F1084"/>
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        <balance>2009619.00000000</balance>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerConditional desc="REIT" issuerCat="OTHER"/>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>VICI Properties Inc</name>
        <lei>254900RKH6RY9KCJQH63</lei>
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          <isin value="US9256521090"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>State Street Institutional US Government Money Market Fund</name>
        <lei>549300BZ5TGIFZUZDZ37</lei>
        <title>State Street Institutional US Government Money Market Fund</title>
        <cusip>857492706</cusip>
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          <isin value="US8574927062"/>
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        <balance>24056000.00000000</balance>
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        <assetCat>STIV</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Simon Property Group Inc</name>
        <lei>529900GQL5X8H7AO3T64</lei>
        <title>Simon Property Group Inc</title>
        <cusip>828806109</cusip>
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          <isin value="US8288061091"/>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>HUDSON PACIFIC PROPERTIES WARRANTS</name>
        <lei>N/A</lei>
        <title>HUDSON PACIFIC PROPERTIES WARRANTS</title>
        <cusip>000000000</cusip>
        <identifiers>
          <other otherDesc="Internal Identifier" value="ACI2WJ2N2"/>
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        <assetCat>DE</assetCat>
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        <fairValLevel>2</fairValLevel>
        <derivativeInfo>
          <optionSwaptionWarrantDeriv derivCat="WAR">
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              <counterpartyName>N/A</counterpartyName>
              <counterpartyLei>N/A</counterpartyLei>
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            <putOrCall>Call</putOrCall>
            <writtenOrPur>Purchased</writtenOrPur>
            <descRefInstrmnt>
              <otherRefInst>
                <issuerName>Hudson Pacific Properties, Inc.</issuerName>
                <issueTitle>Hudson Pacific Properties, Inc.</issueTitle>
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            <shareNo>1.00000000</shareNo>
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        <securityLending>
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      </invstOrSec>
      <invstOrSec>
        <name>Agree Realty Corp</name>
        <lei>N/A</lei>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Digital Realty Trust Inc</name>
        <lei>549300HKCZ31D08NEI41</lei>
        <title>Digital Realty Trust Inc</title>
        <cusip>253868103</cusip>
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          <isin value="US2538681030"/>
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        <assetCat>EC</assetCat>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      </invstOrSec>
      <invstOrSec>
        <name>Weyerhaeuser Co</name>
        <lei>08IRJODWFYBI7QWRGS31</lei>
        <title>Weyerhaeuser Co</title>
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          <isin value="US9621661043"/>
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        <balance>9994698.00000000</balance>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      </invstOrSec>
      <invstOrSec>
        <name>Extra Space Storage Inc</name>
        <lei>N/A</lei>
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        <cusip>30225T102</cusip>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      </invstOrSec>
      <invstOrSec>
        <name>Healthcare Realty Trust Inc</name>
        <lei>549300L0I14L7I0VLX84</lei>
        <title>Healthcare Realty Trust Inc</title>
        <cusip>42226K105</cusip>
        <identifiers>
          <isin value="US42226K1051"/>
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        <balance>8434350.00000000</balance>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      </invstOrSec>
      <invstOrSec>
        <name>State Street Institutional Treasury Plus Money Market Fund</name>
        <lei>549300PNASLVKQG64331</lei>
        <title>State Street Institutional Treasury Plus Money Market Fund</title>
        <cusip>857492862</cusip>
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          <isin value="US8574928623"/>
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        <balance>89407482.15000000</balance>
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        <fairValLevel>2</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>PACS Group Inc</name>
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        <title>PACS Group Inc</title>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>Equinix Inc</name>
        <lei>549300EVUN2BTLJ3GT74</lei>
        <title>Equinix Inc</title>
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          <isin value="US29444U7000"/>
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        <balance>339515.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>270073997.05000000</valUSD>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>CareTrust REIT Inc</name>
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        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Invitation Homes Inc</name>
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        <title>Invitation Homes Inc</title>
        <cusip>46187W107</cusip>
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          <isin value="US46187W1071"/>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2025-08-25</ncom:dateSigned>
      <ncom:nameOfApplicant>COHEN &amp; STEERS INSTITUTIONAL REALTY SHARES INC</ncom:nameOfApplicant>
      <ncom:signature>Albert Laskaj</ncom:signature>
      <ncom:signerName>Albert Laskaj</ncom:signerName>
      <ncom:title>Treasurer and Chief Financial Officer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
