<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/atsncw" xmlns:com="http://www.sec.gov/edgar/common" xmlns:ats="http://www.sec.gov/edgar/atsncommon">
  <headerData>
    <submissionType>ATS-N-W</submissionType>
    <accessionNumber>0000950123-25-006607</accessionNumber>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <filerCredentials>
          <com:cik>0000042352</com:cik>
          <com:ccc>XXXXXXXX</com:ccc>
        </filerCredentials>
        <MPID>SGMT</MPID>
        <NMSStockATSName>Sigma X2</NMSStockATSName>
      </filer>
      <contact>
        <ats:contactName>Noel Reyes</ats:contactName>
        <ats:contactPhoneNumber>212-357-3810</ats:contactPhoneNumber>
        <ats:contactEmailAddress>noel.reyes@gs.com</ats:contactEmailAddress>
      </contact>
      <flags>
        <ats:overrideInternetFlag>false</ats:overrideInternetFlag>
        <ats:confirmingCopyFlag>false</ats:confirmingCopyFlag>
      </flags>
    </filerInfo>
  </headerData>
  <formData>

  </formData>
</edgarSubmission>