#United States #New York #SEC Approval #Securities Information Processors #Extended Trading Hours

Extended Trading Hours Initiative Approved for SIPs

The Securities and Exchange Commission (SEC) has recently approved amendments to the Consolidated Tape Association (CTA) and Unlisted Trading Privileges (UTP) plans. This crucial move enables Securities Information Processors (SIPs) to execute extended trading hours, set to take effect in December 2026.

Industry Testing Schedule

To ensure a smooth transition to the new operational structure, industry testing is scheduled to facilitate thorough preparations. The SIP Operating Committees have released specific dates for User Acceptance Testing (UAT), which will commence in October and extend into early December. The testing events will occur on Fridays, starting at 11 p.m. ET and concluding the following Saturday at noon ET, providing a window to simulate real production conditions.

The precise dates for testing are:

• - October 2, 2026
• - October 16, 2026
• - October 30, 2026
• - November 6, 2026
• - November 20, 2026
• - December 4, 2026

This rigorous testing aims to verify system functionality and operational readiness before the ambitious launch.

What to Expect from the Extended Hours

Starting December 6, 2026, SIPs will provide extended trading hours from 9 p.m. ET on Sunday to 8 p.m. ET on Friday, incorporating a nightly maintenance window from 8 p.m. to 9 p.m. ET. This alteration aims to enhance flexibility for market participants and enable a broader range of trading opportunities.

Jeff Kimsey, Chair of the SIP Operating Committees, emphasized the importance of these testing weekends, referring to them as key opportunities for market participants to validate their systems before the production implementation. The industry's proactive engagement underscores a commitment to ensuring a successful transition.

Implications for Market Participants

As the SIPs prepare for this significant operational shift, participants interested in trading during extended hours must secure SEC approval for any rule changes or necessary regulatory filings. Moreover, changes to the regulatory framework include mandated overnight halts for certain corporate actions, enhancing transparency and regulatory compliance.

It is essential for all involved entities to stay updated with the latest announcements released by relevant authorities, including the CTA and UTP, as they will detail revised procedural guidelines and operational expectations leading up to the December launch.

About the SIPs

SIPs play a pivotal role in the U.S. market structure, consolidating protected equities bid/ask quotes and trades from registered exchanges into a unified, transparent feed. Covering networks A, B, and C, SIPs ensure that trade information from NYSE-listed, Cboe, Nasdaq, and other regional exchanges is readily accessible to investors. With a governing structure involving multiple stakeholders, SIPs are designed to provide transparency and efficiency in the U.S. equities markets.

Overall, the SEC's approval for extended trading hours represents a significant evolution in the trading landscape, enhancing investor access and promoting market liquidity. As December approaches, the culmination of extensive preparations and testing will determine the success of this initiative, setting a new standard for equity trading.