NSE Pre-Open Session Rules to Change From September 7, 2026
NSE Revises Pre-Open Session Structure From September 7, 2026
From September 7, 2026, NSE will change the way orders can be placed, modified and cancelled during the pre-open session. While the total session time will remain unchanged at 9:00 am to 9:15 am, the internal stages will be reorganised.
During the first phase from 9:00 am to 9:05 am, traders will be able to place, modify or cancel both market and limit orders. From 9:05 am to 9:10 am, only limit orders will be accepted, while market orders will be rejected.
NSE Pre-Open Session Timings and Order Rules
The revised pre-open session will follow four stages:
| Pre-Open Stage | Time | Key Activity |
|---|---|---|
| Phase 1 | 9:00 am–9:05 am | Market and limit orders can be placed, modified or cancelled |
| Phase 2 | 9:05 am–9:10 am | Only limit orders can be placed, modified or cancelled |
| Order Matching | 9:10 am–9:12 am | Orders matched and opening price determined |
| Buffer Period | 9:12 am–9:15 am | Transition to regular trading |
The exchange may also randomly stop order entry during the final two minutes of the second phase. Order matching will begin at 9:10 am under the revised framework, compared with 9:08 am under the existing structure.
NSE Pre-Open Session and Opening Price Discovery
The pre-open session operates through a call auction mechanism, under which orders are collected before being matched to determine the opening price. The framework covers securities in the equity market, including SME securities, partly paid-up securities, InvITs and REITs.
The changes are intended to make the opening price-discovery process more consistent with the Closing Auction Session. NSE's current information page also lists updated FAQs for the pre-open session in the equity derivatives segment applicable from September 7, 2026.
NSE Pre-Open Session Key Highlights
- Effective Date: September 7, 2026.
- Pre-Open Session: 9:00 am to 9:15 am.
- Phase 1: 9:00 am to 9:05 am, with market and limit orders allowed.
- Phase 2: 9:05 am to 9:10 am, with only limit orders allowed.
- Order Matching: 9:10 am to 9:12 am.
- Buffer Period: 9:12 am to 9:15 am.
- Market Orders in Phase 2: Will be rejected.
- Order Entry Closure: NSE may randomly close order entry during the final two minutes of Phase 2.
- Key Objective: To align the opening price-discovery mechanism more closely with the Closing Auction Session.
What to Watch Next
Traders may need to account for the revised timing when placing or modifying orders during the NSE pre-open session.
Market participants can watch how the changes affect order placement and opening price discovery after implementation.
Investors may also track further NSE updates relating to the pre-open and closing auction mechanisms.
Disclaimer
Investments in the securities market are subject to market risks. Read all related documents carefully before investing. Registration granted by SEBI, and certification from NISM in no way guarantee the performance of the intermediary or provide any assurance of returns to investors. Choice Equity Broking Private Limited: SEBI Reg No. Broking - INZ000160131 ( BSE - 3299 ) | ( NSE - 13773 ) | ( MSEI - 73200 ) | ( MCX - 40585 ) | ( NCDEX - 01006 ). Depository Participant SEBI Reg. No. - IN - DP - 84 - 2015, DP ID CDSL - 12066900, NSDL ID - IN301895. Research Analyst - INH000000222 (CIN. NO.: U65999MH2010PTC198714)
Other News
Bajaj Nivesh Reports 9.7% Revenue Growth in Q2 FY27, Net Profit Rises 9.8%
Bajaj Nivesh Limited has reported its financial results for the quarter and half year ended September 30, 2026. The company recorded revenue from operations of Rs.297.36 crore in Q2 FY27, up 9.7% year-on-year (YoY). Net profit for the quarter stood at Rs.293.27 crore, while earnings per share increased to Rs.256.61 from Rs.233.69 in the corresponding quarter last year.
Balkrishna Industries Signs Strategic Partnership with Pirelli for Premium Car Tyres in India
Balkrishna Industries Limited (BKT) has signed a strategic agreement with Pirelli to expand its presence in India's premium passenger car tyre market. Under the agreement, BKT will produce up to 800,000 Pirelli-branded premium car tyres by 2030. Production will take place at one of BKT's newly constructed plants, equipped with advanced technology and designed to meet Pirelli's quality standards. The agreement also provides for a potential 50-50 joint venture to build a new production plant for high-value car tyres for domestic and international markets. The partnership aims to help both companies benefit from the expected growth in India's premium car tyre market.
Corona Remedies Receives ANVISA GMP Certification for Two Manufacturing Facilities
Corona Remedies Limited has received Good Manufacturing Practice (GMP) Compliance Certification from Brazil’s Health Regulatory Agency, ANVISA, for its Oral Solid Dosage (OSD) manufacturing facility and Hormone manufacturing facility, both located at Bhayla, Ahmedabad, Gujarat. The company disclosed the development to BSE Limited and the National Stock Exchange of India Limited on October 22, 2026, under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. The certification may support the company's efforts to expand its presence in international pharmaceutical markets, subject to applicable regulatory requirements.