Key facts
- Nasdaq's overnight window runs 9pm to 4am Eastern Time, corresponding to 10am to 5pm in Hong Kong and Beijing during US winter time.
- The extended schedule runs from 9pm EST Sunday through 8pm EST Friday, with one hour reserved for system maintenance, per Gate.
- Gate reported that the SEC approved Nasdaq's 23/5 plan in the second quarter of 2026.
Nasdaq is preparing to extend trading in US equities on its exchange to nearly 23 hours a day from next month, with a launch slated for December 6. The expansion introduces an overnight window running from 9pm to 4am Eastern Time. During US winter time, that corresponds to 10am to 5pm in Hong Kong and Beijing, directly overlapping with normal trading hours across China.
Gate reported that the exchange will operate a 23/5 system, trading 23 hours daily for five days a week with only one hour reserved for system maintenance. The schedule extends from 9pm EST Sunday through 8pm EST Friday. Gate also reported that the SEC approved Nasdaq's 23/5 plan in the second quarter of 2026.
The primary report describes the change as bringing Wall Street into real-time competition with Asian markets.