NSE to Start Pre-Open Trade in Equity Derivatives from December 8, 2025

The National Stock Exchange (NSE) is set to introduce a pre-open session for equity derivatives, including index and single stock futures, starting December 8, 2025. This initiative aims at improving price transparency and enhancing volatility control ahead of market open.

Key Highlights of NSE’s Pre-Open Session for F&O

The pre-open session for the equity derivatives segment will be conducted from 9:00 AM to 9:15 AM. This 15-minute window will be divided into 3 parts: Order Entry (9:00 to 9:08 AM), Order Matching (9:08 to 9:12 AM), and a Buffer Period (9:12 to 9:15 AM). 

During the Order Entry phase, traders can place, modify, or cancel orders, which the system will randomly close between the 7th and 8th minute. The Order Matching phase will finalise trades based on an equilibrium price logic, while the buffer time provides a smooth transition into regular trading hours.

Segmentation and Applicability

This pre-open mechanism is applicable to the current-month futures contracts on indices and individual stocks. In the last 5 trading days before expiry, it also includes the next-month contracts. However, it will not apply to far-month (M3) contracts, option contracts, spread contracts or futures on corporate action ex-dates.

Real-Time Data Visibility and Order Types

During the Order Entry period, both limit and market orders can be entered. Special term orders like stop-loss or Immediate or Cancel (IOC) are not accepted. Traders will have live access to indicative opening prices, order book, demand-supply stats and the resulting equilibrium data via the NSE system.

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Conclusion

With this new structure, NSE aims to refine the opening price mechanism for equity derivatives. The pre-open session will serve as a strategic step toward enhancing market efficiency, reducing volatility, and supporting a more stable price discovery in India’s dynamic F&O landscape.

Disclaimer: This blog has been written exclusively for educational purposes. The securities or companies mentioned are only examples and not recommendations. This does not constitute a personal recommendation or investment advice. It does not aim to influence any individual or entity to make investment decisions. Recipients should conduct their own research and assessments to form an independent opinion about investment decisions.

Investments in securities are subject to market risks. Read all related documents carefully before investing.