The US Securities and Exchange Commission announced it will convene a public roundtable on September 17 at its Washington, DC headquarters to address the operational and regulatory requirements for expanded equity trading hours. The session, which will also be available via livestream, will focus on infrastructure needs for overnight sessions, market operations, system resiliency, and measures to safeguard investors.

Chair Atkins Signals New Era for Markets

SEC Chair Paul Atkins described the initiative as a step into continuous market operations. He noted that US equity markets are entering a period that includes both day and night trading, expressing interest in alignment with venues that already support around-the-clock activity.

The roundtable will gather input from exchanges, brokers, clearing firms, and other participants as the agency evaluates how to support longer trading windows without compromising market integrity.

Exchanges Push for Extended Hours

Several major platforms have already advanced plans for significantly longer trading sessions. Nasdaq has engaged with regulators on implementing 24-hour trading five days a week, with a potential launch in the second half of 2026 pending approvals. Cboe is preparing near-continuous weekday trading on its EDGX Equities Exchange, featuring a brief daily maintenance window.

The New York Stock Exchange has proposed 22-hour weekday trading, while 24X is moving forward with 23-hour sessions following initial approvals. Internationally, the London Stock Exchange plans to introduce a night-time trading venue in early 2027, with client testing expected before the end of 2026.

These developments reflect growing interest in accommodating global investors and retail participants who seek flexibility beyond the traditional 9:30 a.m. to 4:00 p.m. ET session. Some overnight trading already occurs through limited pre-market and after-hours activity, but broader adoption would require coordinated updates across market data systems, clearing processes, and broker operations.

Crypto Influence and Market Implications

The push for extended equity trading hours comes as cryptocurrency markets have long provided 24/7 access, allowing continuous price discovery and responses to global events. This model has shaped investor expectations for traditional assets, prompting exchanges to explore ways to compete and serve participants across time zones.

Regulators and industry participants will need to address potential challenges, including liquidity during off-peak periods, execution quality, and the ability of systems to handle continuous operations. The SEC has opened a public comment file to collect feedback ahead of the roundtable, with submissions becoming part of the official record.

While no final decisions on implementation timelines have been made, the September discussions mark a formal step in assessing the feasibility and safeguards required for broader trading access in US equities.