Sensex Weekly Expiry: RBL Bank, OFSS & More Under F&O Ban on Sep 18

On Sep 17, 2025, Sensex ended the session in green, up 0.38% at 82,693.71, while NSE rose by 0.36%, closing at 25,330.25. 

Sensex Weekly Expiry: Stocks Under F&O Ban 

As the Sensex weekly expiry approaches on Thursday, Sep 18, 2025, the National Stock Exchange (NSE) has imposed a trading ban on 3 stocks in the futures and options (F&O) segment. 

The ban was triggered as these securities breached 95% of the market-wide position limit (MWPL). While trading in F&O for this stock is restricted, it remains available for trading in the cash market.

The stock under the F&O ban for Sep 18 include:

• RBL Bank

On Sep 17, 2025, RBL Bank shares opened at ₹267.95 and closed down by 1.12% at ₹264.45 on BSE after reaching a day low of ₹263.70.

• Oracle Financial Services Software Ltd (OFSS)

On Sep 17, 2025, OFSS share price opened at ₹9198.55 and closed lower by 0.20% at ₹9122.55 on BSE after reaching a day low of ₹9100.00.

• Angel One

On Sep 17, 2025, Angel One shares opened at ₹2239.90 and closed up by 0.84% at ₹2248.90 on the BSE after reaching a day high of ₹2266.40.

What is Sensex Weekly Expiry?

Sensex options contracts are scheduled to expire every Thursday. If a Thursday falls on a trading holiday, the expiry is moved to the previous trading day.

Settlement occurs at the regular market closing time on the expiry day, unless the exchange announces a different schedule.

Furthermore, if the last Thursday of the expiry cycle is a holiday, the expiry of individual securities within the same series is also shifted to the prior trading day.

Also Read: ₹10,000 SIP in Canara Robeco Consumer Trends Fund Grows to ₹82.84 Lakh Over 16 Years!

Conclusion

The F&O ban on these stocks signals cautious trading ahead of the Sep 18 weekly expiry. Market volatility could rise as the expiry approaches. With expiry-related volatility likely to persist, investors are advised to exercise caution and stay vigilant to stock-specific movements, particularly within the derivatives' space.

Disclaimer: This blog has been written exclusively for educational purposes. The securities mentioned are only examples and not recommendations. This does not constitute a personal recommendation/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 the securities market are subject to market risks, read all the related documents carefully before investing.