The stock market is not open 24/7. Major U.S. exchanges like the New York Stock Exchange (NYSE) and Nasdaq operate on a set schedule with specific trading hours.
Regular trading hours for these exchanges run from 9:30 a.m. to 4:00 p.m. Eastern Time (ET), Monday through Friday. This schedule applies to most securities, including stocks, ETFs, and options. The market closes for trading on weekends and federal holidays.
Some exchanges offer extended-hours trading, known as pre-market (4:00 a.m. to 9:30 a.m. ET) and after-hours (4:00 p.m. to 8:00 p.m. ET) sessions. However, trading volume and liquidity are lower during these times, and not all stocks trade. These sessions are primarily used for limit orders rather than market orders.
The stock market closes for nine market holidays throughout the year. For example, the NYSE and Nasdaq are closed on New Year's Day, Martin Luther King Jr. Day, and other federal holidays., the market closes early on certain days, such as the day before Independence Day and Christmas Eve.
While U.S. markets follow this schedule, other global markets have different operating hours. For instance, the London Stock Exchange (LSE) operates from 8:00 a.m. to 4:30 p.m. GMT, and the Tokyo Stock Exchange (TSE) runs from 9:00 a.m. to 3:00 p.m. JST. These varying hours allow for some overlap, facilitating international trading.
For example, if an investor wants to react to overnight news, they must place their trades during the regular trading session or use limit orders in the extended-hours market. However, liquidity constraints during off-hours can result in less favorable execution prices.