Key takeaways
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- Nasdaq filed with the SEC to add a new trading session (9 p.m.–4 a.m. ET), extending access to 23 hours on weekdays.
- Target timing is early Q3 2026, contingent on regulatory approval and coordination across the market ecosystem.
- Broader industry shift: the NYSE is pursuing 22-hour weekday trading, and brokers already offer near-24/5 access on off-exchange venues.
- The critical question is liquidity quality: extended hours may reduce gap risk for global investors, but thinner volume could increase noise and volatility.
What Happened?
Nasdaq asked US regulators for permission to expand trading on its stock venues to 23 hours during the workweek by adding an overnight session from 9 p.m. to 4 a.m. Eastern Time. The exchange said the change reflects growing demand from global investors who want access across time zones. Nasdaq expects to be operational with extended trading early in the third quarter of 2026, assuming approval and broader industry alignment.
Why It Matters?
Longer trading hours would structurally change how information gets priced into US equities, particularly for investors in Europe and Asia who currently face overnight headline risk around earnings, macro releases, and geopolitical events. For markets, the benefit is more continuous price discovery and potentially less extreme opening gaps. The trade-off is that liquidity is currently concentrated around the US open and close; expanding hours without sufficient institutional participation could worsen execution quality via wider spreads and more volatile, less reliable prices. For exchanges and market infrastructure providers, this also creates a new competitive battleground—who captures global order flow and data revenue as US stocks move closer to a “follow-the-sun” model.
What’s Next?
The proposal hinges on regulatory approval and on whether core plumbing expands in sync, especially clearing and consolidated market data feeds. DTCC and the entities that run real-time pricing feeds are already planning extended hours, which is a prerequisite for a true near-24/5 market. Over 2026, investor focus will shift to whether institutions meaningfully participate overnight or leave extended sessions dominated by retail flow, which would determine whether this becomes a deeper, more efficient market—or simply a longer, noisier one.















