" They are extended sessions with lower liquidity, wider spreads, and often more volatile price action compared to the regulated core hours. For decades, this was handled by the Specialist system on the NYSE, and today it is managed by complex algorithms on electronic platforms.
How After-Hours and Pre-Market Sessions Affect Your Trading Strategy
Similarly, after-hours trading extends the window from 4:00 PM to 8:00 PM ET. Pre-Market and After-Hours Sessions While the core session ends at 4:00 PM ET, the market itself does not go dark immediately.
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. Conversely, the Tokyo Stock Exchange and Hong Kong Stock Exchange are just gearing up as the US day winds down.
How After-Hours Trading Extends the Market Day and Impacts Strategy
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 New York Stock Exchange and the Nasdaq Composite, which handle the vast volume of public company shares, adhere to the same daily window.
More About What time does the stock market close everyday
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