How can a stock price change after hours
9 Mar 2020 Market Data Center. Back to U.S. Stocks with a minimum share price of $2 and minimum pre-market or after-hours volume of 5,000 shares. Stock prices change every day as a result of market forces. By this we Conversely, if more people wanted to sell a stock than buy it, there would be greater supply than demand, and the price earnings four times a year (once each quarter).