<?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>0000356628-25-000013</cov:accessionNumber>
  <cov:filerCredentials>
    <cov:filerCik>0000356628</cov:filerCik>
    <cov:filerCcc>XXXXXXXX</cov:filerCcc>
  </cov:filerCredentials>
  <cov:fileNumber>013-00118</cov:fileNumber>
  <cov:txNMSStockATSName>CrossStream (the Continuous Cross), CrossStream BLOX (the Conditional Cross)</cov:txNMSStockATSName>
  <cov:taStatementAboutAmendment>Amendments are made to Part 2 Item 5a and Part 3 Items 8a, 8b, and 8c to reflect changes to the minimum order quantity accepted by the Firm ATS's. The Firm's ATS will now accept new odd-lot orders with a minimum order quantity of one share. The minimum order quantity accepted was previously 100 shares. These changes 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>