SEC sets Sept. 17 roundtable on 24-hour trading, names panels from NYSE, Nasdaq, BlackRock, Citadel Securities

The Securities and Exchange Commission on Sept. 1 published the agenda and full panelist roster for a public roundtable on "Preparations for 24-Hour Trading," to be held Sept. 17 at the agency's Washington headquarters from 10 a.m. to 4 p.m. ET, according to the SEC's press release. The event is open to the public and will be webcast live on sec.gov; online attendance requires no registration, and a recording will follow.

The day is structured around opening remarks from the SEC Chairman and Commissioners plus Jamie Selway, director of the Division of Trading and Markets, a data presentation from the division's Office of Analytics and Research (presenter Dan Mathisson), and three moderated panels.

Panel One, "Preparedness for a 24-Hour Market," covers exchange and broker-dealer readiness, overnight surveillance, closing-price processes, and clearance and settlement changes. Panel Two, "Resiliency in a 24-Hour Market," addresses systems readiness, Regulation SCI, failover and capacity planning, cybersecurity, and overnight staffing. Panel Three, "Expected Impacts and Consideration of Next Steps," looks at liquidity, capital formation, effects on issuers, and "Day 2" steps toward eventual 24x7 trading.

The panelist list, per the SEC, spans exchanges, brokers, market makers and infrastructure providers — including NYSE, Nasdaq, Cboe, MEMX, Robinhood, Schwab, Interactive Brokers, Citadel Securities, Jane Street, Virtu, DTCC, State Street, BlackRock, Invesco and Citi. Notably, it also includes the two firms most identified with overnight U.S. equity trading: Dmitri Galinov of 24X and Brian Hyndman of Blue Ocean, both on Panel Three.

Key facts

• Roundtable date/time: Sept. 17, 2026, 10 a.m.–4 p.m. ET, SEC headquarters, 100 F Street NE, Washington (SEC press release).
• Three panels: preparedness, resiliency, and expected impacts/next steps (SEC agenda).
• Opening remarks include Trading and Markets Director Jamie Selway; data presentation by Dan Mathisson (SEC).
• Panelists include NYSE, Nasdaq, Cboe, MEMX, DTCC, FINRA, Citadel Securities, Jane Street, Virtu, BlackRock, Robinhood, Schwab, Interactive Brokers, 24X and Blue Ocean (SEC).
• Event is public, webcast live, with a recording to follow; comments may be submitted via the SEC event page (SEC).

The real-world read

This is an announcement of an agenda, not a rule or a decision — no policy has changed, and nothing about 24-hour trading has been approved. The panel language itself signals the SEC is still asking open questions: Panel One is framed around "what has been completed, what remains," which is not the vocabulary of a settled transition. Worth watching is who is in the room. The lineup is heavy on incumbent exchanges, large asset managers and high-frequency market makers — the parties whose infrastructure and economics are most affected — while the agenda's own framing flags unresolved hard problems: closing-price processes, shortened maintenance windows, and overnight surveillance. Those are exactly the areas where continuous trading is thinnest on liquidity and richest in risk. The presence of 24X and Blue Ocean, existing overnight-session operators, underscores that this is partly about how established venues catch up to a market that already trades after hours.

Opinion, and whose

The SEC has not stated a position or a timeline; the agenda references future expansion "toward 24x7 trading" as a discussion topic, not a commitment. No panelist views are on record from this announcement.

Sources

• SEC — Press Release (Sept. 1, 2026), "SEC Announces Agenda and Panelists for Roundtable on Preparations for 24-Hour Trading." Primary source; provided the date, venue, agenda, moderators and full panelist list. Not marketing.

This is news reporting, not financial advice.