Nasdaq Pitches SEC for 23×5 Trading Model Enabling Around-The-Clock Market Access

The Nasdaq is making a bold push to transform the U.S. equities landscape by requesting Securities and Exchange Commission approval for a groundbreaking 23×5 trading framework. This new model would allow stocks and exchange-traded products to trade 23 hours daily across five weekdays, addressing mounting pressure from global investors seeking continuous market participation beyond traditional hours.

The 23×5 Architecture: How Extended Hours Would Work

Under Nasdaq’s proposal, the exchange would operate a dual-session structure. The conventional daytime session would run from 4:00 a.m. to 8:00 p.m. Eastern Time—largely mirroring current market hours—while an innovative overnight “Night Session” would introduce trading from 9:00 p.m. to 4:00 a.m. ET. Each weekday would include a one-hour operational pause for system maintenance and corporate action processing.

The overnight trading window would function with streamlined capabilities compared to regular hours, offering core order types alongside reduced regulatory protections. This calibrated approach balances market accessibility with operational stability.

Why Global Investors Are Demanding 24/5 Access

The 23×5 initiative directly responds to an evolving investor base. International participants increasingly expect to trade U.S. equities within their own time zones without waiting for traditional market opens. This geographic reality has pressured major exchanges to reconsider what “business hours” means in an interconnected global economy.

Nasdaq Senior Vice President Chuck Mack articulated the strategic rationale: “This evolution reflects a simple reality: global investors expect access on their terms, in their time zones, without compromising trust or market integrity.” The emphasis on maintaining regulatory safeguards signals that extended hours won’t come at the cost of market stability.

Implementation Timeline and Next Steps

Nasdaq has committed to launching the expanded 23×5 schedule only after ensuring market data systems can reliably support overnight trading operations. This phased approach prioritizes infrastructure readiness over speed, reducing implementation risk and protecting against technical failures during the transition.

The SEC’s regulatory review will prove critical in determining whether this market evolution gets the green light and how quickly the 23×5 model could reshape American equity trading.