What are the trading hours for US overnight trading?

Overnight trading allows you to trade a wide range of US ETFs and more popular US stocks outside of standard market hours. At Interactive Brokers (IBKR), US overnight trading hours are from 8 pm ET to 3:50 am ET, Sunday to Friday.

To access and use overnight trading:…

Pattern Day Trading (PDT) rules apply in the US overnight trading session. Overnight trades are for the next business date.  A buy in the overnight session (for the next business date) followed by a sale on that business date (early, regular or late hours) would be considered a day trade…

Only Day Limit orders are allowed in the US overnight trading session. In this scenario, "DAY" implies the time during which the overnight market is open. Orders will only be active during the overnight trading hours and will expire automatically at 3:50am ET if not executed…

IBKR’s US overnight trading sessions observe the New York Stock Exchange’s ("NYSE") holiday schedule in that IBKR will not operate an overnight trading session when the NYSE is closed the next day (e.g., if the NYSE is closed on a Friday, IBKR will not operate a trading session that Thursday evening/Friday morning).  IBKR does not adjust the overnight trading hours of operation on days the NYSE has a scheduled early close. For trading sessions starting on days the NYSE is closed per the NYSE holiday schedule, the Alternative Trading System (ATS) accepts orders from 5:30 PM ET and effects transactions from 6:00 PM ET until 3:50 AM ET the following morning. …