美股交易时间是如何规定的？

Trading Hours Overview - The U.S. stock market has defined trading hours that vary between Daylight Saving Time and Standard Time, which is crucial for participants in U.S. financial markets [1][2] - During Daylight Saving Time, regular trading hours are from 21:30 to 04:00 Beijing time, while in Standard Time, they shift to 22:30 to 05:00 [1][2] Pre-Market and After-Hours Trading - Pre-market trading occurs from 16:00 to 21:30 during Daylight Saving Time and from 17:00 to 22:30 during Standard Time [3] - After-hours trading is available from 04:00 to 08:00 in Daylight Saving Time and from 05:00 to 09:00 in Standard Time, providing additional trading opportunities despite lower liquidity [3] Holiday Market Closures - The U.S. stock market observes closures on specific holidays such as New Year's Day, Martin Luther King Jr. Day, Presidents' Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas [4] - These closures respect cultural and historical significance while allowing market participants time to rest and adjust [4] Exchange-Specific Trading Hours - While most U.S. exchanges follow the outlined trading hours, there may be slight variations among different exchanges, such as the New York Stock Exchange and NASDAQ [5] - Investors are advised to check the specific trading hours of the exchange relevant to their trading activities [5]