It requires an understanding of the different sessions, the varying schedules of global markets, and the distinction between the closing auction and the after-hours activity that follows. " They are extended sessions with lower liquidity, wider spreads, and often more volatile price action compared to the regulated core hours.
Regular Trading Hours Close Time ET
For decades, this was handled by the Specialist system on the NYSE, and today it is managed by complex algorithms on electronic platforms. Session Start Time (ET) End Time (ET) Description Pre-Market 4:00 AM 9:30 AM Regular Trading 9:30 AM 4:00 PM After-Hours 4:00 PM 8:00 PM The Role of the Closing Auction At 4:00 PM ET, the official close is not a simple handoff to the next hour; it is the result of a structured process known as the closing auction.
The purpose of this auction is to find a single, fair closing price that reflects the maximum number of shares willing to trade at one specific value. Because the world is round, the closing of one major exchange simply signals the opening of another.
Regular Trading Hours Close Time ET
Regular Trading Hours in the United States The backbone of the American financial system operates on a strict schedule that has been consistent for decades. Similarly, after-hours trading extends the window from 4:00 PM to 8:00 PM ET.
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