SEC sets Sept. 17 roundtable agenda for 24-hour trading preparations

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SEC 24-hour trading roundtable

Highlights

SEC will host a public roundtable on September 17 from 10 a.m. to 4 p.m. ET to discuss 24-hour trading preparations.
Key industry participants including Robinhood, NYSE, BlackRock, Virtu Financial, Nasdaq, UBS, Citadel Securities and others will join three panels on readiness, resiliency and market impacts.
SEC signals that moving toward 24-hour trading involves extensive market structure issues such as technology, risk controls, liquidity and operational resilience beyond mere trading access.

Agenda and participants for the Sept. 17 event

As announced by SEC, the U.S. Securities and Exchange Commission, the roundtable runs from 10 a.m. to 4 p.m. ET at the agency's headquarters at 100 F Street, N.E., Washington, D.C., with doors opening at 9 a.m. ET. The session is open to the public and will also be webcast live on the SEC's website, with a recording to be posted later.

Opening remarks are scheduled from the SEC chairman and commissioners, along with Jamie Selway, director of the SEC's Division of Trading and Markets. A data presentation from the division's Office of Analytics and Research, presented by Dan Mathisson, follows at 10:30 a.m.

The first panel, beginning at 11 a.m., focuses on preparedness for a 24-hour market and is moderated by Jon Kroeper of the SEC Division of Trading and Markets and Katie Kolchin of the Securities Industry and Financial Markets Association. Panelists include representatives from Robinhood, NYSE, BlackRock, Virtu Financial, Cboe, BNY Pershing, UBS, FINRA and Bruce Markets.

The afternoon program includes a 1:15 p.m. panel on resiliency in a 24-hour market, moderated by Partick Norton of the SEC and Jim Toes of the Security Traders Association, with speakers from Jane Street, State Street, Samsung, Schwab, Nasdaq, Interactive Brokers, DTCC, Exegy and MEMX. A third panel at 2:45 p.m. addresses expected impacts and next steps, with moderators Peggy Sullivan of the SEC Division of Trading and Markets and Adrian Griffiths of MEMX, and participants from OTC Markets Group, BNP Paribas, 24X, Invesco, Citadel Securities, DriveWealth, Blue Ocean, Citi and ModernIR.

Market structure implications for U.S. trading

By convening firms from across the trading ecosystem, the SEC is signaling that any move toward round-the-clock equity market activity involves broader questions than trading access alone. The lineup spans exchanges, brokerages, clearing and settlement groups, market makers and asset managers, pointing to a discussion that includes technology capacity, risk controls, liquidity and operational resilience.

In-person attendees are subject to security checks, while online viewers do not need to register in advance. The format suggests the agency is using the roundtable to gather market input in public as debate over 24-hour trading expands across U.S. market structure.

Our earlier coverage of the 2026 annual Market Wide Circuit Breaker (MWCB) test explained how MIAX Pearl Equities is coordinating with other market centers and the Securities Information Processors to validate marketwide volatility safeguards. We noted that certain members must participate under MIAX Pearl Rule 2622, which ties the test to Limit Up-Limit Down compliance and trading-halt procedures aimed at demonstrating operational readiness.

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