According to Nasdaq’s Q1 2026 earnings report and its filed Form 8-K with the SEC, its 23-hour trading model (23/5) has been approved by the U.S. Securities and Exchange Commission and will be officially implemented on December 6, 2026. After the new system launches, the U.S. stock market will be closed for only one hour daily, from 8:00 PM to 9:00 PM Eastern Time, for system settlement and data processing, with trading continuous at all other times.
Nasdaq's 23-Hour Trading System Approved, Launches on December 6
TechFlowShare
Summary
Nasdaq’s 23-hour trading system (23/5) will launch on December 6 following SEC approval. The system enables continuous trading with a one-hour daily pause from 8:00 PM to 9:00 PM ET for settlement. The extended hours are designed to increase trading activity and accommodate higher trading volumes.
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