Extended-hours trading

Common card · No. 409992

Extended-hours trading (or electronic trading hours, ETH) is stock trading before or after the trading day regular trading hours (RTH) of a stock exchange, i.e., pre-market trading or after-hours trading. Market makers and specialists generally do not participate in after-hours trading, which can limit liquidity. Since 1985, the regular trading hours for major exchanges in the United States, such as the New York Stock Exchange and the Nasdaq stock market, have been from 9:30 a.m. to 4:00 p.m. Eastern Time (ET). Pre-market trading occurs from 4:00 a.m. to 9:30 a.m. ET, although the majority of the volume and liquidity come to the pre-market at 8:00 a.m. ET. After-hours trading on a day with a normal session occurs from 4:00 p.m. to 8:00 p.m. ET. Overnight trading occurs from 8:00 p.m. to 4:00 a.m. ET, and only via electronic communication networks (ECNs) as opposed to stock exchanges. Trading outside regular hours is not a new phenomenon, but used to be limited to high-net-worth investors...

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