Nasdaq Seeks SEC Approval for 23-Hour Trading During Weekdays

Nasdaq Inc., the second-largest exchange in the US, is looking for regulatory approval to extend trading hours on its stock venues to 23 hours during the work week.

The firm asked the Securities and Exchange Commission for permission to add an additional trading session, from 9 p.m. to 4 a.m. ET, according to a filing Monday. That would be on top of the pre-market, regular and post-market hours the firm already operates, the firm said.