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          <ccc>XXXXXXXX</ccc>
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      <regStreet1>1166 Avenue of the Americas,</regStreet1>
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      <regCity>NEW YORK</regCity>
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      <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>2025-03-31</repPdDate>
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        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>SBA Communications Corp</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>AvalonBay Communities Inc</name>
        <lei>K9G90K85RBWD2LAGQX17</lei>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>State Street Institutional Treasury Plus Money Market Fund</name>
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          <isin value="US8574928623"/>
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        <assetCat>STIV</assetCat>
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        <fairValLevel>2</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Boyd Gaming Corp</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Kilroy Realty Corp</name>
        <lei>549300CXXI18B214UN80</lei>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>VICI Properties Inc</name>
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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>
        <name>Simon Property Group Inc</name>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Agree Realty Corp</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Digital Realty Trust Inc</name>
        <lei>549300HKCZ31D08NEI41</lei>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Weyerhaeuser Co</name>
        <lei>08IRJODWFYBI7QWRGS31</lei>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Extra Space Storage Inc</name>
        <lei>N/A</lei>
        <title>Extra Space Storage Inc</title>
        <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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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Healthcare Realty Trust Inc</name>
        <lei>549300L0I14L7I0VLX84</lei>
        <title>Healthcare Realty Trust Inc</title>
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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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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>PACS Group Inc</name>
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        <title>PACS Group Inc</title>
        <cusip>69380Q107</cusip>
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          <isin value="US69380Q1076"/>
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        <balance>1345527.00000000</balance>
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        <curCd>USD</curCd>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>Equinix Inc</name>
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        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Invitation Homes Inc</name>
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        <title>Invitation Homes Inc</title>
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          <isin value="US46187W1071"/>
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        <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>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2025-04-30</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>
  <documents>XXXX</documents>
</edgarSubmission>
