Nasdaq Launches 23-Hour Trading Day with New Overnight Session

Nasdaq is set to introduce a new overnight trading session, significantly extending its operational hours to nearly 23 hours a day, five days a week. This expansion is currently slated to begin on December 6, 2026, contingent upon approval from the US Securities and Exchange Commission and the readiness of the securities information processor.

The proposed overnight session will operate from 9 pm to 4 am ET. This schedule aims to establish continuous trading from Sunday 9 pm through Friday 8 pm, with a brief one-hour daily pause from 8 pm to 9 pm ET for essential processing.

Extended Access and Investor Adjustments

Nasdaq’s existing trading hours, spanning from 4 am to 8 pm ET, will remain unchanged. This strategic move is designed to broaden global access to US equities, addressing the growing demand from international investors seeking more flexible trading windows.

• Investors will need to acquire new ports for order entry.
• Not all order types available during regular hours will be supported.
• Market orders and certain opening and closing orders will be unavailable.
• Orders remaining open at 4 am ET will be automatically canceled and must be re-entered at the start of the subsequent trading session.

To uphold market integrity, Nasdaq plans to implement additional safeguards. These include static price bands, designed to reject orders that fall outside predefined limits, pending regulatory endorsement.

Data Dissemination and Market Scope

Trading data generated from this new extended session will be disseminated through a dedicated market-data feed. Nasdaq also intends to launch new