Premarket trading for US stocks (NYSE, NASDAQ, AMEX) runs before the regular session.
| Day | Hours |
|---|---|
| Monday | 4:00 AM - 9:30 AM |
| Tuesday | 4:00 AM - 9:30 AM |
| Wednesday | 4:00 AM - 9:30 AM |
| Thursday | 4:00 AM - 9:30 AM |
| Friday | 4:00 AM - 9:30 AM |
| Saturday | Closed |
| Sunday | Closed |
The premarket trading starts at 4:00 AM and ends at 9:30 AM from Monday to Friday.
The NASDAQ premarket hours starts at 4:00AM Monday to Friday.