<?xml version="1.0" encoding="UTF-8"?>
<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>0001104659-26-112562</cov:accessionNumber>
  <cov:filerCredentials>
    <cov:filerCik>0001368727</cov:filerCik>
    <cov:filerCcc>XXXXXXXX</cov:filerCcc>
  </cov:filerCredentials>
  <cov:fileNumber>013-00031</cov:fileNumber>
  <cov:txNMSStockATSName>BIDS ATS</cov:txNMSStockATSName>
  <cov:taStatementAboutAmendment>BIDS Trading L.P. ("BIDS") submits this Material Amendment, which amends Part III, Items 7, 8, 11, 19, and 22 to provide and reflect that BIDS will match and execute odd-lot transactions on the BIDS ATS.  The changes in this Amendment apply to all Subscribers and the Broker-Dealer Operator.</cov:taStatementAboutAmendment>
  <cov:liveTestFlag>LIVE</cov:liveTestFlag>
  <cov:flags>
    <cov:overrideInternetFlag>false</cov:overrideInternetFlag>
    <cov:confirmingCopyFlag>false</cov:confirmingCopyFlag>
  </cov:flags>
</cov:edgarSubmission>