Extended-hours trading

Extended-hours trading is stock trading that happens either before or after the normal trading hours of a stock exchange, i.e. pre-market trading or after-hours trading.

Since 1985, the regular trading hours for major exchanges in the United States, such as the New York Stock Exchange and the Nasdaq Stock Market, have been from 9:30 a.m. to 4:00 p.m. Eastern Time (ET). Pre-market trading occurs from 4:00 a.m. to 9:30 a.m. ET. After-hours trading on a day with a normal session occurs from 4:00 p.m. to 8:00 p.m. ET.