The Securities and Exchange Commission has set talks for September to discuss moving toward 24-hour stock trading, a shift that would fundamentally change how U.S. markets operate. The discussions come as major exchanges including Nasdaq, Cboe, and the London Stock Group push for longer trading hours.
Why the talks now
The SEC's September meetings signal that the regulator is taking the idea seriously after years of informal debate. Exchanges have been exploring extended hours to capture more volume from global investors and to compete with off-exchange platforms that already offer near-round-the-clock access. The London Stock Exchange, for example, has been testing longer sessions, while Nasdaq and Cboe have publicly backed the concept.
What the SEC will consider
The talks are expected to cover market structure, risk management, and investor protection. A move to 24-hour trading would require changes to how clearing and settlement work, as well as how brokers handle orders overnight. The SEC has not released a formal agenda, but the discussions are likely to focus on whether the current system can handle continuous trading without increasing volatility or harming retail investors.
Who is involved
Representatives from the exchanges, broker-dealers, and clearinghouses are expected to participate. The SEC has not named specific participants, but the agency's Division of Trading and Markets will lead the talks. The meetings are part of a broader SEC review of market structure that includes other topics such as payment for order flow and tick sizes.
What's at stake
If the SEC moves forward, U.S. stock trading could eventually run 24 hours a day, five or even seven days a week. That would align the U.S. market more closely with cryptocurrency exchanges and foreign bourses that already offer round-the-clock trading. But critics warn that continuous trading could increase stress on market participants and make it harder for regulators to monitor for manipulation.
The September talks are the first formal step. No timeline has been set for any rule changes, and the SEC has not indicated whether it will propose a pilot program or a full overhaul. The outcome will depend on how the industry and the public respond during the comment period that is expected to follow the meetings.
