Nasdaq and NYSE to Launch 23-Hour Trading Schedule
The major exchanges will begin the expanded 23-hour daily session on December 6, 2026.
Updated on Oct. 22, 2026 in Investing
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Starting December 6, 2026, the Nasdaq and NYSE will transition to a 23-hour trading schedule running from 9:00pm Sunday through 8:00pm Friday. This change includes a one-hour daily maintenance window to support the expanded market access.
Why it matters
The move responds to a surge in investor demand for off-hours trading, which has seen volume grow by 359% year-on-year. It marks a significant shift in market infrastructure as exchanges adapt to a more globalized, continuous financial landscape.
Overnight trading currently accounts for 0.9% of total NMS share volume, with over 4,200 stocks now participating in overnight sessions. Average daily overnight volume has reached 144.6 million shares.
The players
Nasdaq
This American multinational financial services corporation operates a prominent stock exchange and provides trading technology services.
NYSE
The New York Stock Exchange is the world's largest stock exchange by market capitalization and is based in New York City.
SEC
The U.S. Securities and Exchange Commission is the federal agency responsible for protecting investors and maintaining fair, orderly, and efficient markets.
London Stock Exchange
The primary stock exchange in the United Kingdom is currently preparing to launch a 24-hour trading platform named LSE24.
The details
The expanded schedule includes a dedicated Night Session from 9:00pm to 4:00am ET, with trades occurring between 9:00pm and midnight officially assigned to the next calendar day. This follows a September 17, 2026, SEC roundtable that examined the broader implications of round-the-clock trading.
Timeline
August 2026: Overnight trading share reached 0.9 percent of NMS volume.
September 17, 2026: The SEC held a roundtable on round-the-clock trading.
December 6, 2026: Nasdaq and NYSE launch the new 23-hour trading schedule.
First half of 2027: The London Stock Exchange plans to launch its LSE24 platform.
Market Dynamics
This transition aligns with the regulatory framework explored during the SEC's September 17, 2026, roundtable regarding round-the-clock trading impacts. The shift reflects a wider industry movement toward continuous global operations, mirroring the London Stock Exchange's own pending LSE24 platform launch.
Retail and institutional investors will gain the ability to execute trades for over 4,200 NMS stocks during overnight hours, significantly increasing market accessibility. Investors should monitor how brokerage firms update their overnight execution services to support these new hours.
The takeaway
The move to 23-hour trading creates a nearly continuous market environment that challenges traditional concepts of market open and close times. Investors should prepare for increased price action during late-night hours and verify their brokerage firm's specific policies for overnight trade execution.
Further reading
For more information on market trends, visit the Investing section.
Source note: This article includes information reported by FinTech Global.
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