The U.S. Securities and Exchange Commission (SEC) will host a roundtable on September 17 to explore the transition of the U.S. stock market to 24-hour trading. The discussion will cover preparations for overnight trading, the operational resilience of a 24-hour market, and the potential opportunities and challenges of such an expansion. The event will be open to the public and livestreamed on the SEC's website, with the agenda and speaker details to be announced prior to the meeting.