Nasdaq pushes toward 23-hour trading days after SEC gives green light

Nasdaq filed a proposal with the SEC in December 2025 to stretch its equity trading hours from 16 to 23 hours per day, five days a week. On April 10, 2026, the SEC granted accelerated approval, putting the exchange on a path toward a December 6, 2026, launch date.

What the new schedule looks like

Nasdaq’s plan, branded as “global trading hours,” would carve the trading day into two sessions. The first runs from 4:00 a.m. to 8:00 p.m. ET, covering the pre-market, regular session, and after-hours windows that already exist. The second session picks up from 9:00 p.m. to 4:00 a.m. ET, capturing the overnight hours when Asian and European markets are active.

Between those two blocks sits a one-hour technical pause from 8:00 p.m. to 9:00 p.m. ET on weekdays, long enough to run maintenance on data feeds, clearing systems, and related infrastructure.

The SEC’s accelerated approval aligns with similar measures already greenlit for the NYSE and 24X Exchange, a newer venue that was purpose-built for extended-hours trading.

Why this matters for global investors

Nasdaq President Tal Cohen has framed the initiative as a necessary evolution, one designed to serve investors across time zones while maintaining liquidity, transparency, and protections.

The flip side is that overnight sessions historically carry thinner liquidity and wider bid-ask spreads. The SEC is aware of this tension, which is why a public roundtable is scheduled for September 17, 2026, to hash out operational and regulatory preparations before the switch flips.

What still needs to happen

The December 6, 2026, target is contingent on infrastructure readiness, not just regulatory blessing. Securities Information Processors, the systems responsible for consolidating and distributing market data across exchanges, need to function reliably during overnight hours. Clearing mechanisms run by the DTCC and other entities must handle settlement for trades executed at 3:00 a.m. with the same precision as those at 3:00 p.m.

Industry stakeholders have flagged data feed reliability and clearing process continuity as the two biggest hurdles. If those aren’t resolved to the SEC’s satisfaction, the December date could slip.

Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy.