About the Effort The Securities Industry and Financial Markets Association (SIFMA), the Investment Company Institute (ICI), and The Depository Trust & Clearing Corporation (DTCC) are collaborating on efforts to accelerate the U.S. securities settlement cycle from T+2 to T+1. On February 15, 2023, the SEC adopted final requirements for a May 28, 2024, implementation date for the move to T+1 settlement for transactions in US cash equities, corporate debt, and unit investment trusts. The T+1 Playbook, T+1 Test Approach, and other updated T+1 documentation provide a detailed approach to identifying the potential impacts, implementation activities, timelines, dependencies, and risk impacts that market participants should consider in order to successfully prepare for the transition to a T+1 Settlement Cycle on May 28, 2024. Accelerating to T+1 Events View Replays Updated Testing Document Read More What's New? March 8, 2024- T+1 Corporate Actions Testing Events - Cycle 16 (PDF) March 5, 2024- Accelerated Settlement (T+1) – DTC, NSCC AND ITP FUNCTIONAL CHANGES – (PDF) March 4, 2024- Foreign Securities Voluntary Recommendations (PDF)