SCHEDULED MARKET-STRUCTURE CHANGE

December 6, 2026 U.S. Overnight-Market Expansion

December 6 is becoming a broader U.S. market-infrastructure milestone. Nasdaq’s Night Session is the primary confirmed exchange event. Other venue dates and infrastructure changes carry their own confirmed, scheduled or conditional status described below.

Nasdaq Stock Market

Nasdaq currently expects to introduce a Night Session on Sunday, December 6, 2026, creating a 23-hour weekday structure on the Nasdaq Stock Market. The implementation remains subject to SIP readiness and applicable SEC rule changes.

Session	Eastern Time
Premarket	4:00 AM–9:30 AM
Regular Market	9:30 AM–4:00 PM
Post-Market	4:00 PM–8:00 PM
Day-to-Night Transition Pause	8:00 PM–9:00 PM, Monday–Thursday
Night Session	9:00 PM–4:00 AM

The one-hour Monday–Thursday pause supports maintenance, processing and transition to the next trade date. The week begins directly with Sunday’s 9:00 PM Night Session. This is 23-hour weekday trading—not 24/7 trading.

Sunday night and broker access

The Nasdaq trading week is scheduled to begin Sunday at 9:00 PM ET. Exchange availability and broker access are separate. A broker may offer different overnight hours, securities or order capabilities.

Compare documented broker hours →

Eligible securities

Nasdaq’s exchange rules determine what may trade and when. An individual broker may make a narrower set available to its customers.

Nasdaq orders and trade dates

Nasdaq’s official FAQ says routable orders will be accepted. Several order types and attributes will not be available, including unpriced market orders, primary, market, midpoint and market-maker pegged orders, and orders tied to Nasdaq’s opening or closing crosses.

Orders still outstanding at 4:00 AM ET will be cancelled rather than automatically continuing into the subsequent session. Orders may be re-entered beginning at 4:00 AM.

Trades from 9:00 PM to midnight are reported with the next calendar day’s trade date. Trades from midnight through 8:00 PM use the current calendar day’s trade date.

24X National Exchange

24X National Exchange currently targets Sunday, December 6, 2026 for expansion of its exchange trading hours, subject to its stated remaining regulatory requirements. This is a target date, not an unconditional launch guarantee.

24X session	Eastern Time
Overnight Trading Session	9:00 PM–4:00 AM
Premarket	4:00 AM–9:30 AM
Core Market	9:30 AM–4:00 PM
After-Market	4:00 PM–8:00 PM
Transition period	8:00 PM–9:00 PM

24X states that orders will not be accepted during the 8:00 PM–9:00 PM ET controlled transition/reset period.

Official 24X extended-hours FAQ ↗

Industry infrastructure

NSCC clearing: DTCC states that NSCC launched 24x5 operations on June 28, 2026, operating from Sunday at 8:00 PM ET through Friday at 8:00 PM ET.
Trade reporting: FINRA’s Trade Reporting Facilities are scheduled to expand on December 6, 2026, operating from Sunday at 9:00 PM ET through Friday at 8:00 PM ET, with a one-hour Monday–Thursday pause from 8:00 PM–9:00 PM ET, excluding holidays.
Market data: The UTP SIP’s expanded transmission schedule is scheduled to take effect December 6, 2026 as part of the industry transition toward expanded weekday operation.

Implementation milestones

24X publishes the following as planned industry testing dates. They are not trading-launch dates.

October 2, 2026
October 16, 2026
October 30, 2026
November 6, 2026
November 20, 2026
December 4, 2026

Separate venue timelines

NYSE Arca: Its currently stated target remains the end of 2026, dependent on required infrastructure readiness and approvals. It is not assigned a December 6 launch date here. Official NYSE information ↗

Blue Ocean ATS: Blue Ocean is an existing alternative trading system, not a national exchange beginning overnight trading on December 6. Its documented overnight operation remains distinct from the upcoming exchange-level expansions: 8:00 PM–4:00 AM ET, Sunday through Thursday. Official Blue Ocean FAQ ↗

Official sources

Last verified: August 25, 2026