Days Open Start Time (ET) End Time (ET) Monday 9:30 AM 4:00 PM Tuesday 9:30 AM 4:00 PM Wednesday 9:30 AM 4:00 PM Thursday 9:30 AM 4:00 PM Friday 9:30 AM 4:00 PM Pre-Market and After-Hours Trading While the official hours define the core session, trading does not completely cease when the closing bell rings. The market is open on all normal business days except for weekends and designated federal holidays.
How News Impacts Stock Market Open Days
Within those open days, the official trading hours create a structured environment for buying and selling. During this time, the mechanics of supply and demand determine the prevailing prices for thousands of securities.
This session allows for continued price adjustment based on late-day news, such as earnings announcements or geopolitical events. Common closures include New Year's Day, Independence Day, Thanksgiving Day, and Christmas Day.
How News Impacts Stock Market Open Days
Pre-Market Activity Pre-market trading begins at 4:00 AM Eastern Time and runs until the official open at 9:30 AM. On these days, the major exchanges are closed, and no official trading takes place.
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