Nasdaq expects to begin overnight stock trading on December 6, 2026, connecting its existing sessions into a 23-hours-a-day, five-days-a-week schedule. That is not 24/7 trading: the plan includes a daily 8:00–9:00 p.m. ET pause, and the start remains conditional on market-data readiness and applicable rule changes. NYSE Arca is pursuing a separate extended-hours launch targeted for 2026.
What are global trading hours?
“Global trading hours” is Nasdaq’s term for its planned schedule spanning most of the day and night. The exchange describes trading from Sunday evening through Friday evening, with one hour each day set aside for a pause. The new overnight session would join Nasdaq’s existing early, core and late sessions.
| Session | Nasdaq schedule (ET) |
|---|---|
| Early | 4:00 a.m.–9:30 a.m. |
| Core | 9:30 a.m.–4:00 p.m. |
| Late | 4:00 p.m.–8:00 p.m. |
| Daily pause | 8:00–9:00 p.m. |
| Overnight | 9:00 p.m.–4:00 a.m. |
The overnight session is scheduled to start at 9:00 p.m. ET and end at 4:00 a.m. ET. Trading is planned to resume after the daily pause, with the weekly schedule beginning Sunday at 9:00 p.m. and ending Friday at 8:00 p.m. Nasdaq says the pause supports processing and the changeover to the next trade date. Its FAQ also says overnight sessions will begin on Monday-through-Thursday exchange holidays, subject to the operating schedule. Nasdaq’s 23/5 Trading Information Hub describes the sessions and operating details.
When will Nasdaq’s overnight session start?
Nasdaq’s current expected transition date is Sunday, December 6, 2026. The SEC approved Nasdaq’s amended 23-hour proposal on April 10, 2026, but approval of an exchange rule is not the same as operational readiness. Nasdaq’s stated date is conditional on Securities Information Processor (SIP) readiness and applicable SEC rule changes. The SEC’s April 10, 2026 approval record covers the rule; Nasdaq’s hub gives the expected start and conditions.
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In a September 22, 2026 account of an SEC roundtable, Nasdaq quoted its Senior Vice President of North American Markets, Chuck Mack, expressing confidence in December 6 as the go-live date. That is Nasdaq’s account of his remarks, not a substitute for the stated readiness conditions. Nasdaq’s account of the roundtable provides the quotation and context.
How does NYSE Arca’s plan compare?
NYSE Arca has its own extended-hours proposal and implementation work; its timing and milestones should not be treated as identical to Nasdaq’s.
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| Item | Nasdaq | NYSE Arca |
|---|---|---|
| Regulatory status and timing | The SEC approved Nasdaq’s amended 23-hour proposal on April 10, 2026. Expected transition: December 6, 2026, conditional on SIP readiness and applicable rule changes. SEC approval record; Nasdaq schedule and conditions. | NYSE says its rules received SEC approval in February 2025 and it is targeting a 2026 launch. Its schedule highlights are labeled “Subject to SEC approval.” NYSE extended-hours information. |
| Published overnight hours | 9:00 p.m.–4:00 a.m. ET; daily pause 8:00–9:00 p.m. ET. Nasdaq schedule. | 9:00 p.m.–4:00 a.m. ET, alongside early, core and late sessions. NYSE schedule. |
| Infrastructure mentioned | Nasdaq conditions the expected start on SIP readiness. Nasdaq FAQ. | NYSE says consolidated SIP feeds and its proprietary data are intended to be available, and that DTCC plans to be open for clearing during extended hours. NYSE extended-hours information. |
| Retail broker access and eligible securities | Not stated in Nasdaq’s information hub; access will depend on broker support and applicable trading terms. Nasdaq FAQ. | Not stated in NYSE’s extended-hours information. NYSE extended-hours information. |
NYSE’s page describes its launch as targeted for 2026 and identifies market-data and clearing coordination as part of the work. Its displayed schedule carries the “Subject to SEC approval” caveat even though NYSE says the rules received approval in February 2025; consult the exchange for any updated final schedule.
How will trade date and settlement be affected?
Under Nasdaq’s published convention, the trade date changes at 9:00 p.m. ET, when the overnight session begins, and again at midnight. Executions from 9:00 p.m. to midnight receive the following calendar day’s trade date. Executions from midnight through 8:00 p.m. receive the current calendar day’s trade date. Settlement terms follow the assigned trade date. Nasdaq’s FAQ sets out this convention.
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For example, a Nasdaq execution at 10:30 p.m. on Sunday is assigned Monday’s trade date, while one at 1:00 a.m. Monday is assigned Monday’s date as well. A Monday afternoon execution also carries Monday’s date. The exchange’s stated boundaries matter: the 8:00–9:00 p.m. interval is the daily pause, not another trading session.
What changes can investors expect—and what remains unknown?
The practical change is the possibility of placing trades in an additional overnight window, if the security and broker are supported. An exchange’s published hours alone do not mean every U.S. stock, venue or brokerage will be available throughout them. Nasdaq says Nasdaq Texas, PSX and Nasdaq options exchanges retain their current schedules; the new plan should not be generalized to those venues or to every U.S. exchange.
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Nasdaq’s and NYSE’s published information does not identify which retail brokers will offer overnight access, which securities each broker will make eligible, what order types will be accepted, or what client-specific restrictions will apply. Those details must come from the brokerage. Before relying on overnight access, check the broker’s own hours, eligible-symbol list, order rules, cancellations and disclosures.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why can overnight trading be riskier?
The SEC-approved Limit Up-Limit Down (LULD) Plan amendment describes overnight trading as historically having lower liquidity and wider spreads, with potential for greater price volatility. In a thinner market, fewer available buyers and sellers can make it harder to trade at a desired price; the displayed quote and the price ultimately available to you may differ.
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The LULD amendment establishes overnight price-band protections in two phases, for overnight-protection hours of 9:00 p.m.–4:00 a.m. ET. These bands are guardrails against extraordinary price moves, not insurance against losses, broad spreads or difficult execution. A price limit mechanism does not ensure that an order will fill or that a quote reflects a stable market. The SEC approved Amendment No. 27 on August 5, 2026. The SEC/Federal Register order approving the LULD Plan amendment describes the protections and overnight-market risks.
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What to check before placing an overnight order
- Confirm the session and venue. Verify that the specific security is eligible at your brokerage during the overnight hours you intend to use.
- Read the order rules. Check which order types are accepted, how unfilled orders are handled, and whether the broker imposes client or account restrictions.
- Check the quote and spread. Consider whether the available prices and market depth are acceptable; lower liquidity can mean wider spreads and more volatile prices.
- Verify the trade date. For Nasdaq, apply its 9:00 p.m. and midnight trade-date boundaries, and confirm the resulting settlement information in your brokerage account.
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