CAT NMS LLC Posts New Draft Version of CAT Reporting Technical Specifications for Industry Members 3/29/2019

On Friday, March 29, 2019 CAT NMS, LLC published a new draft version of the CAT Reporting Technical Specifications for Industry Members. CAT NMS, LLC published the draft in two formats – clean and redlined – to make it easier for individuals to see the differences between this version and the prior version. Both formats of the document may be found here. In addition, CAT NMS, LLC also updated the companion CAT Industry Member Reporting Scenarios document and published clean and redlined formats which may be found here.

On March 26, 2019, CAT NMS, LLC published CAT Alert 2019-01 which focuses on the ATS Order Type registration process and may be found here.

Please contact the FINRA CAT helpdesk with any questions or concerns at 888-696-3348 or by email at