
Extended hours could boost liquidity and price discovery for U.S. equities, especially crypto‑linked stocks, while aligning U.S. markets with global, around‑the‑clock trading patterns.
The push for near‑continuous trading marks a watershed moment for U.S. exchanges. Nasdaq’s 23‑hour proposal builds on the NYSE’s recent extended‑hour pilots, signaling that the traditional 9:30 a.m.–4 p.m. window is no longer sufficient for a market that increasingly operates on a global clock. By adding a night session that overlaps Asian market hours, Nasdaq aims to capture cross‑border order flow and reduce the latency gap that currently forces investors to rely on foreign venues for after‑hours exposure.
For crypto‑centric companies listed on Nasdaq, the change could be transformative. Firms such as Coinbase, Robinhood and MicroStrategy have already demonstrated robust overnight activity driven by 24/7 cryptocurrency trading. A formalized night session would provide these stocks with regulated liquidity, potentially narrowing spreads and improving price efficiency. However, the extended window also introduces new volatility dynamics, as market participants react to news releases and macro events outside the traditional bell, requiring sophisticated risk‑management tools.
Regulatory approval remains the final hurdle. The SEC will scrutinize the proposal for market‑integrity safeguards, including circuit‑breaker mechanisms and surveillance capabilities during the night session. Operationally, Nasdaq must upgrade its clearing and settlement infrastructure to handle near‑continuous flow without compromising settlement finality. If cleared, the 23‑hour model could set a new industry standard, prompting other exchanges to adopt similar schedules and reshaping how investors think about market access and timing.
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