As per media news reports the U.S. Stock exchanges are shifting to a 23/5 trading schedule starting on Sunday, December 6, 2026
Key Details of the New 23/5 Schedule
- Launch Date: Sunday, December 6, 2026.
- Participating Exchanges: Nasdaq, NYSE Arca, 24X National Exchange, and Cboe EDGX.
- New Overnight Session: Runs from 9:00 PM to 4:00 AM ET (Sunday evening through Friday evening).
- Daily Maintenance Break: A mandatory 1-hour pause from 8:00 PM to 9:00 PM ET (Monday–Thursday).
- Core Trading Session: The standard 9:30 AM to 4:00 PM ET session remains unchanged and continues to set official market prices.
- Other Sessions: Pre-market (4:00 AM–9:30 AM ET) and after-hours (4:00 PM–8:00 PM ET) remain in place.