Skip to main content

CAT Transaction and CAT CAIS Production and Prod-Mirror Test Environments will be unavailable from 8 pm ET on May 14, 2021 through 2 pm ET on May 16, 2021 due to enhanced disaster recovery testing.

interconnected

About CAT

On July 11, 2012, the U.S. Securities and Exchange Commission (SEC) voted to adopt Rule 613 under Regulation NMS requiring the national securities exchanges and national securities associations listed here (collectively, the SROs) to submit an NMS plan (Plan) to the SEC to create, implement, and maintain a consolidated audit trail (CAT).