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Topic
Extended hours
3 guides in Finabase Learn
- Premarket trading Trading in US stocks before the 9:30 a.m. ET open, from as early as 4:00 a.m. on some venues, with thinner volume and wider spreads.
- Stock market hours: regular, pre-market, after-hours and overnight US stock market hours in Eastern Time, the 2026 holidays and early closes, how pre-market, after-hours and overnight sessions work, and their risks.
- Time in force: day, GTC, IOC, FOK and other order durations What day, good-til-canceled, IOC, FOK, all-or-none, on-open and on-close instructions do, how extended-hours eligibility works, and the traps in each.
Educational content, not investment advice. Finabase Learn explains how markets and tools work. It does not recommend any security or strategy, and examples are for illustration only. Investing involves risk, including the loss of principal. Rules and figures are for the United States unless stated and can change — check the cited source before you act.