About a-team Marketing Services
The knowledge platform for the financial technology industry
The knowledge platform for the financial technology industry

A-Team Insight Blogs

US Consolidated Audit Trail Swings into Action

Subscribe to our newsletter

The US Consolidated Audit Trail (CAT) swung into action last week after long delays and in a limited way, with members of self-regulatory organisations (SROs) within the CAT NMS (National Market System) Plan, except small SRO members, starting to report to the central repository.

Early reporting follows the end of October publication by Thesys CAT, operator of the CAT, of long-awaited reporting technical specifications. SROs are initially reporting quote, order, trade and other information required under the CAT NMS Plan, although Thesys CAT has yet to complete all the capabilities of first phase reporting. It has advised the SROs that it is continuing to work on outstanding elements, such as the regulators’ query functionality and links between reported events, and plans to complete the full functionality required by the CAT NMS Plan for the first reporting phase on or before March 31, 2019.

While SRO members started to submit data to the CAT on November 15, 2018, small SRO members must follow suit on November 15, 2019.

The CAT is intended to allow regulators to improve securities’ market surveillance by creating an extensive audit trail of customer and order event information for all orders in US exchange-listed and over-the-counter (OTC) equity securities across all markets and trading venues. It is also meant to collect data for exchange-listed options contracts. If implementation of the CAT is completed fully and successfully, which is a mighty challenge for all concerned, it is expected to be the largest data repository of information on securities transactions in the world.

Subscribe to our newsletter

Related content

WEBINAR

Recorded Webinar: Sponsored by FundGuard: NAV Resilience Under DORA, A Year of Lessons Learned

The EU’s Digital Operational Resilience Act (DORA) came into force a year ago, and is reshaping how asset managers, asset owners and fund service providers think about operational risk. While DORA’s focus is squarely on ICT resilience and third-party dependencies, its implications extend deep into core operational processes that are critical to market integrity, investor...

BLOG

Regulatory Developments 2026, a Cross-Jurisdictional Outlook

2026 regulatory themes are converging around the theme of continuous evidence – data quality, control effectiveness, and operational resilience demonstrated through repeatable artefacts rather than narrative attestations. In Europe, that direction is most explicit in ESMA’s data platform and supervisory tooling agenda, alongside the ESAs’ DORA-related coordination and oversight planning – see ESMA 2026 Annual...

EVENT

Eagle Alpha Alternative Data Conference, London, hosted by A-Team Group

Now in its 8th year, the Eagle Alpha Alternative Data Conference managed by A-Team Group, is the premier content forum and networking event for investment firms and hedge funds.

GUIDE

Corporate Actions USA 2010

The US corporate actions market has long been characterised as paper-based and manually intensive, but it seems that much progress is being made of late to tackle the lack of automation due to the introduction of four little letters: XBRL. According to a survey by the American Institute of Certified Public Accountants (AICPA) and standards...