As a result, trading in a stock can keep going even after the stock has "closed.". The same things that move stock prices during regular hours also move them after hours -- supply and demand. If big news about a company breaks, that will affect the price in after-hours trading, and the price will rise or fall depending on the news.Can stock options be traded after hours?
A: Stock options give their owners the right to buy or sell stocks or other investments at a prearranged price in the future. A vast majority of the options on U.S. stocks trade between 9:30 a.m. ET and 4 p.m ET. Most stocks, though, can be traded before or after those hours.What does stock after hours mean?
After-hours, or after-market, trading refers to stock purchases and sales that occur between the time a stock exchange closes and the time it reopens on the morning of the following business day.