24-Hour Stock Trading Gets an SEC Roundtable Agenda

The Overnight Session Question Gets a Formal Hearing

The SEC announced on September 1, 2026 the agenda and panelist list for its roundtable on preparations for 24-hour trading, scheduled for September 17 at Commission headquarters in Washington. It runs 10am to 4pm ET, is open to the public, and will be webcast live with a recording posted afterward.

• Date and format: September 17, 2026, 10am–4pm ET at SEC headquarters, open to the public and webcast live
• Panelists include Citi, BlackRock, Nasdaq, Charles Schwab, Jane Street and the New York Stock Exchange
• Three panels covering operational readiness, surveillance and clearing, and the market-quality effects of longer hours
• Opening remarks from the SEC Chairman, Commissioners, and Jamie Selway, Director of the Division of Trading and Markets

What the Three Panels Will Cover

Remarks run from 10 to 11am, then three panels take the rest of the day.

The first covers exchange and broker-dealer operational readiness — whether the systems that currently go quiet at 8pm can actually stay up, and what the maintenance windows look like when there are none. The second covers surveillance capability during overnight sessions and the clearance and settlement mechanics underneath every trade. The third examines the effects of longer hours on liquidity, capital formation and how market participation might shift.

That third panel is where the substance is for ordinary investors. Extended hours already exist; the honest question is what the order book looks like at 3am and who is on the other side of your trade.

Why This Roundtable Is Happening Now

Because the market has been moving there regardless. Retail brokerages have run overnight sessions for a while, and the industry has been stepping from 24/5 toward 24/7 in increments. The NYSE has filed plans for a blockchain-based platform for round-the-clock trading of stocks and ETFs with instant on-chain settlement. Across the Atlantic, the London Stock Exchange unveiled its LSE 24 trading venue in July. In crypto-adjacent markets, CME's always-on crypto futures have been running for months.

Convening exchanges, a custodian bank, the largest asset manager, a major retail broker and a leading market maker in one room is the regulator doing the sequencing work: establishing what breaks before the market finds out live.

What Are the Real Obstacles to 24-Hour Trading?

Three, and none of them are about desire.

Settlement windows. Clearing runs on a daily cycle with defined cut-offs. A trade at 2am has to land in some settlement day, and the boundary has to be unambiguous for every participant simultaneously.

Surveillance coverage. Market abuse detection assumes staffed hours and comparison against normal patterns. Overnight sessions are thinner, which makes anomalous activity both easier to attempt and harder to distinguish from ordinary low-volume noise.

Liquidity quality. This is the one that touches retail directly. Thin books mean wider spreads. An investor placing a market order at 4am may get a materially worse fill than the same order at 10am — and a headline that says trading is open around the clock does not communicate that difference.

None of these is unsolvable. All of them need to be solved before, not after.

What This Means If You Trade

Nothing changes on September 17. This is a public discussion, not a rulemaking, and no rule proposal is on the calendar off the back of it.

What it does offer is an unusually direct look at how the people who would actually operate a 24-hour market assess their own readiness. If you are weighing whether to use extended sessions, the surveillance and liquidity panels are worth the watch — the operators' own caveats tend to be more informative than anything in a marketing page. Our stock trading coverage will summarise the takeaways after the session.

This is market-structure news, not investment advice — nobody should reposition a portfolio around a roundtable agenda.

Sources: SEC — Agenda and Panelists for Roundtable on Preparations for 24-Hour Trading — September 1, 2026; SEC — Roundtable event page — September 2026; Markets Media — September 2026.