A market order does not need to specify a price, and it is bought or sold at the current market price.
1. Available Time
Trading Hours
9:30 a.m. - 04:00 p.m. ET.
Note: 04:00 a.m. - 9:30 a.m. ET is the pre-market trading hours for the U.S. stock market, and 04:00 p.m. - 08:00 p.m. ET is the U.S. stock market post-market trading hours.
2. Description and Precautions
2.1 When a market order is placed during the pre-market session, the system will put the order on hold and submit it to the exchange after the regular market trading begins. Although a market order can be entered during the post-market session, it may not be submitted for matching until the next regular trading session opens.
2.2 Market orders do not guarantee a specific execution price.