U.S. stock market trading sessions

1.Regular trading hours

Regular trading hours for the US stock market, including the New York Stock Exchange (NYSE) and the Nasdaq Stock Market (Nasdaq), are from 9:30 a.m. to 4 p.m. ET on weekdays (except stock market holidays). On early-closure days, typically right before or right after a market holiday, regular stock trading ends at 1 p.m. ET.
 

2.Pre-market and post-market trading

Airstar supports pre-market and post-market trading.
Pre-market trading hours are from 4 a.m. to 9:30 a.m. ET, and trading extends from 4 p.m. to 8 p.m. ET.
If the trading day is a half-day, post-market trading extends from 1 p.m. to 5 p.m. ET.