23-hour US stock trading set to start 6 December
Overnight trading already accounts for about 1% of total US stock volume as the move to near-continuous weekday sessions approaches.
Twenty-three-hour trading in US stocks is set to start on 6 December.
Overnight trading already accounts for about 1% of total US stock volume, according to reporting by Traders Magazine on 22 October and The Wall Street Journal on 21 October.
What we are watching
- Whether the 6 December start date holds.
- How the overnight share of volume changes once the longer session is live.
Sources
- SEC Eyes Sweeping Market Reforms — Traders Magazine, 22 Oct 2026
- NYSE Just Extended Options Trading Hours. It’s Only the Beginning. — The Wall Street Journal, 21 Oct 2026
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