FACTUAL SESSION GUIDE
Premarket Trading
Trading before the 9:30 AM ET core open. Availability, securities and order types vary by broker and venue.
- Typical hours
- Broker and venue schedules vary; commonly between 4:00 AM and 9:30 AM ET
- What “open” means
- Orders may execute only on participating venues, in eligible securities, under applicable broker rules.
- Important limitation
- Hours, eligible symbols, liquidity and order types vary. A broker accepting an order does not necessarily mean it can execute immediately.
Start with official schedules
Last verified: August 24, 2026