When does the stock market open? The U.S. stock market opens at 9:30 a.m. Eastern Time (ET) and closes at 4:00 p.m. ET, Monday through Friday. Knowing when the stock market opens helps traders time their strategies and stay ahead of market movements. “Stay tuned with us, as we continue to explore everything you need … Continue reading When Does the Stock Market Open? Hours, Time Zones & Global Guide!