When does the market open? It's a simple question, but the answer is becoming more complex. For purposes of our discussion, all times are Eastern Standard Time unless otherwise noted. Regular trading ...

Stock trading is no longer limited to the traditional market hours of 9:30 a.m. to 4:00 p.m. ET, with some brokers now offering 24-hour trading options. Pre-market trading typically runs from 4:00 a.m ...