Regular Trading Hours
Stock markets open at 9:30 AM Eastern Time on weekdays for regular trading. This applies to the New York Stock Exchange and Nasdaq, which close at 4:00 PM ET. The 6.5-hour window is the core session where the bulk of volume and price discovery occurs.
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Pre-Market and After-Hours Sessions
Pre-market trading typically begins at 4:00 AM ET, allowing investors to react to overnight news. After-hours trading runs from 4:00 PM to 8:00 PM ET. These extended sessions have lower liquidity and wider spreads, making them riskier for casual traders.
Market Holidays
U.S. exchanges close on nine federal holidays each year, including New Year's Day, Independence Day, and Christmas Day. They also close early on days like Christmas Eve and the day after Thanksgiving. Holiday schedules can shift slightly, so checking the specific year's calendar is essential.
Global Market Opening Times
While the U.S. opens at 9:30 AM ET, other major markets operate on different schedules. The London Stock Exchange opens at 3:00 AM ET, and the Tokyo Stock Exchange opens at 7:00 PM ET. This means there is a 24-hour cycle of trading across global exchanges throughout the week.
Why Opening Times Matter
The opening bell creates a burst of volatility as overnight information is absorbed. Prices can gap up or down significantly at the open. Understanding when markets open helps traders time entries, manage risk, and avoid thin liquidity periods outside core hours.