Group 1 - The core trading hours for the US stock market are from 9:30 AM to 4:00 PM Eastern Time, with pre-market trading starting at 4:00 AM and after-hours trading ending at 8:00 PM, which differs from domestic trading hours [1] - The US stock market allows for flexible trading units, enabling investors to purchase as few as one share, providing greater flexibility especially for those with smaller capital [1] - The US stock market operates on a T+0 trading system, allowing investors to buy and sell stocks on the same day, which contrasts with the T+1 system in the A-share market [2] Group 2 - Transaction costs in the US stock market include commissions and taxes, with significant variations in commission rates among different brokers, especially with the rise of online brokers offering low or zero commissions [2] - The US stock market features a market maker system that enhances liquidity by providing buy and sell quotes, ensuring timely execution of trades [3] - The US stock market comprises various tiers of stocks, including main board and growth board, each with distinct listing standards and trading rules, necessitating careful selection by investors [3]

此外，美股市场也会在一些特定的节假日进行休市。常见的如元旦、马丁·路德·金纪念日、总统日、耶 稣受难日、阵亡将士纪念日、独立日、劳工节、感恩节以及圣诞节等。在这些节日，股票市场关闭，停 止交易活动 ，整个市场进入休市状态。休市的目的一方面是尊重节假日所承载的文化和历史意义，另 一方面也提供给市场参与者休息调整的时间，有助于维持市场的长期稳定运行。 交易所不同交易时间的情况说明 美股交易时间有着明确且规律的设定，这是金融市场运行的重要制度安排。了解其交易时间规定，对于 参与美股投资或关注美国金融市场的人士至关重要。 美国证券市场有夏令时和冬令时之分，相应的交易时间也会有所不同。 夏令时期间，美股的常规交易 时间为北京时间每周一至周五的晚上 21:30 至次日凌晨 4:00。在这段时间内，市场全面开放，各种股 票、权证等金融产品均可进行正常交易。证券交易商、投资者以及各类金融机构在这个时间段内参与市 场买卖操作，市场流动性充足，价格波动反映着市场信息的即时变化。 冬令时的美股交易时间 而在冬令时，美股的交易时间调整为北京时间每周一至周五的晚上 22:30 至次日凌晨 5:00 。这种时间 的调整主要是因为美国实行 ...