On October 17, 2025, the Nifty 50 closed at 25,709.85, up 124.55 points or 0.49%, while the BSE Sensex rose 484.53 points or 0.58%, settling at 83,952.19.
The Nifty weekly derivatives contracts are scheduled to expire on Monday, October 20, 2025. This is because the markets will remain closed on Tuesday, the usual expiry day, and as per NSE rules, the expiry is moved to the previous trading session in such cases.
Ahead of the Nifty’s weekly expiry on Monday, October 20, 2025, the National Stock Exchange (NSE) has placed two stocks under the Futures and Options (F&O) trading ban:
This restriction is enforced when the open interest in the stock crosses 95% of the market-wide position limit (MWPL). While fresh derivative positions are disallowed, the stocks continue to be available for trading in the cash market.
The stocks under the F&O ban for October 20 are:
On October 17, 2025, Sammaan Capital Limited stock (NSE: SAMMAANCAP) closed at ₹166.76, up 0.07% from its previous close of ₹166.89. During the day, the stock traded between a high of ₹167.50 and a low of ₹165.02.
On October 17, 2025, RBL Bank stock (NSE: RBLBANK) closed at ₹299.50, down 2.30% from its previous close of ₹306.75. During the day, the stock traded between a high of ₹305.50 and a low of ₹298.00.
A stock is placed under the Futures & Options (F&O) ban by the National Stock Exchange (NSE) when the open interest in its derivative contracts exceeds 95% of the Market-Wide Position Limit (MWPL).
This regulatory action aims to curb excessive speculation and maintain orderly market conditions.
During the ban period:
This mechanism is particularly crucial during high-volatility periods, such as expiry weeks, to prevent abrupt price movements and ensure market stability.
The Nifty 50 Futures & Options contracts typically expire every Tuesday. If the expiry day coincides with a trading holiday, the expiry is shifted to the previous trading session. All contracts are settled based on the closing price on expiry day.
For user convenience, especially during expiry week, weekly contracts may sometimes be grouped under the 'monthly' tab on trading platforms. This is a technical categorisation and does not affect the actual expiry terms.
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Market sentiment remains steady ahead of Nifty’s weekly expiry, with both Sammaan Capital Limited and RBL Bank under the F&O ban. Traders may shift their focus toward cash market opportunities, while the restricted derivatives activity could lead to reduced speculative momentum and a more measured expiry session.
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.
Published on: Oct 20, 2025, 8:12 AM IST
Neha Dubey
Neha Dubey is a Content Analyst with 3 years of experience in financial journalism, having written for a leading newswire agency and multiple newspapers. At Angel One, she creates daily content on finance and the economy. Neha holds a degree in Economics and a Master’s in Journalism.
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