NSE Launches Pre-Open Session for F&O: Smoother Openings Ahead

The NSE’s new pre-open session for F&O is set to transform the way derivatives trade at market open. This session, modeled after the existing pre-open in the equity cash market, will use a call auction mechanism to match buy and sell orders and establish a fair opening price for futures contracts. Initially, the framework will cover current-month index and stock futures, with options and other complex contracts excluded.

Traders can place, modify, or cancel orders until a random cut-off between 9:07 am and 9:08 am. The system will then match orders and confirm trades until 9:12 am, followed by a three-minute buffer before regular trading resumes at 9:15 am. Unmatched limit orders will carry over to the regular session, while market orders will convert to limit orders at the discovered opening price.

Key Highlights:

- Pre-open session for F&O begins December 8, 2025, from 9:00 am to 9:15 am.

- Call auction mechanism for order matching and price discovery.

- Only current-month index and stock futures covered initially.

- Random order cut-off between 9:07 am and 9:08 am to prevent manipulation.

- Trades executed during pre-open cannot be cancelled.

- Mock trading scheduled for December 6, 2025, for system readiness.

Source:  National Stock Exchange (NSE) Circular, Moneycontrol, ICICI Direct, Enrich Money, Angel One, JM Financial, TradeJini, Zerodha