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    <filerInfo>
      <registrantType>IM</registrantType>
      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <issuerCredentials>
          <cik>0001905092</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>
      <flags>
        <overrideInternetFlag>false</overrideInternetFlag>
        <confirmingCopyFlag>false</confirmingCopyFlag>
      </flags>
      <investmentCompanyType/>
      <periodOfReport>06/30/2026</periodOfReport>
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    <coverPage>
      <yearOrQuarter>YEAR</yearOrQuarter>
      <reportCalendarYear>2026</reportCalendarYear>
      <reportingPerson>
        <name>CLARIS ADVISORS, LLC / MO /</name>
        <phoneNumber>314-655-5504</phoneNumber>
        <address>
          <com:street1>800 MARKET STREET</com:street1>
          <com:street2>SUITE 500</com:street2>
          <com:city>ST. LOUIS</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63101-2501</com:zipCode>
        </address>
      </reportingPerson>
      <agentForService>
        <name>STANLEY D. ROYER</name>
        <address>
          <com:street1>800 MARKET STREET</com:street1>
          <com:street2>SUITE 500</com:street2>
          <com:city>ST. LOUIS</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>63101</com:zipCode>
        </address>
      </agentForService>
      <reportInfo>
        <reportType>INSTITUTIONAL MANAGER NOTICE REPORT</reportType>
        <noticeExplanation>REPORTING PERSON HAS POLICY TO NOT VOTE</noticeExplanation>
        <confidentialTreatment>N</confidentialTreatment>
      </reportInfo>
      <fileNumber>028-21521</fileNumber>
      <reportingCrdNumber>000117734</reportingCrdNumber>
      <reportingSecFileNumber>801-66993</reportingSecFileNumber>
      <explanatoryInformation>
        <explanatoryChoice>N</explanatoryChoice>
      </explanatoryInformation>
    </coverPage>
    <signaturePage>
      <reportingPerson>CLARIS ADVISORS, LLC / MO /</reportingPerson>
      <txSignature>STANLEY D. ROYER</txSignature>
      <txPrintedSignature>STANLEY D. ROYER</txPrintedSignature>
      <txTitle>PRESIDENT &amp; CHIEF COMPLIANCE OFFICER</txTitle>
      <txAsOfDate>07/21/2026</txAsOfDate>
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