24/7 Stock Trading Is About to Test Financial Markets

AI Summary

US stock trading has largely taken place during daytime exchange hours, with relatively light activity in after-hours sessions. Expanding toward 24/7 trading could test how financial markets operate beyond their traditional schedules.

For years, an overwhelming share of trading in US stocks happened on the big exchanges during daytime market hours. Powerhouses like the New York Stock Exchange and Nasdaq Inc. offered after-hours trading sessions, but activity was generally light.