Nasdaq plans to begin trading 23 hours a day, five days a week, on December 6. According to Sina Finance, citing Nasdaq’s website, the schedule will run from 9 p.m. Sunday to 8 p.m. Friday (U.S. Eastern Time), with a one-hour daily maintenance break from 8 p.m. to 9 p.m. The new overnight session will run from 9 p.m. to 4 a.m.; the SEC approved Nasdaq’s proposal in the second quarter, and Nasdaq said its systems had undergone stress testing under extreme conditions.

Other exchanges are also extending trading hours. The London Stock Exchange plans to launch its LSE 24 overnight platform in the first half of 2027, while the Korea Exchange began after-hours continuous trading in September. Hong Kong Exchanges and Clearing plans to extend post-market derivatives trading from 3 a.m. to 4:15 a.m. starting in March 2027, subject to regulatory approval and market readiness.