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<cov:edgarSubmission xmlns:cov="http://www.sec.gov/edgar/atsn/cover" xmlns:ats="http://www.sec.gov/edgar/atsncommon">
  <cov:submissionType>ATS-N/MA</cov:submissionType>
  <cov:rbOperatesPursuantToFormATS>N</cov:rbOperatesPursuantToFormATS>
  <cov:accessionNumber>0002000464-26-000003</cov:accessionNumber>
  <cov:filerCredentials>
    <cov:filerCik>0002000464</cov:filerCik>
    <cov:filerCcc>XXXXXXXX</cov:filerCcc>
  </cov:filerCredentials>
  <cov:fileNumber>013-00202</cov:fileNumber>
  <cov:txNMSStockATSName>AlphaX US</cov:txNMSStockATSName>
  <cov:taStatementAboutAmendment>TMX Alpha US, LLC is filing this Material Amendment to amend  Part III, Section 11a and 11c to increase the time interval between matching events. 

This Material Amendment applies to the broker-dealer operator and all Participants of the ATS. 
</cov:taStatementAboutAmendment>
  <cov:liveTestFlag>LIVE</cov:liveTestFlag>
  <cov:flags>
    <cov:overrideInternetFlag>false</cov:overrideInternetFlag>
    <cov:confirmingCopyFlag>false</cov:confirmingCopyFlag>
  </cov:flags>
</cov:edgarSubmission>
