The Indian benchmark indices Nifty 50 and BSE Sensex to resume trading on Aug 28 after the mid-week holiday on account of Ganesh Chaturthi on Aug 27. The Indian stock markets are likely to witness the impact of Trump’s 50% tariff on Indian goods, which became effective from Aug 27, 2025.
On Aug 26, 2025, the Nifty 50 closed at 24,712.05, down 255.70 points or 1.02%, while the BSE Sensex dropped ~850 points or 1.04%, settling at 80,786.54.
The Nifty monthly derivatives contracts are scheduled to expire on Thursday, August 28, 2025, in line with the standard expiry cycle. Caution ahead of expiry has resulted in tempered market sentiment.
Ahead of the Nifty’s weekly expiry on Thursday, August 26, 2025, the National Stock Exchange (NSE) has placed one stock 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 stock continues to be available for trading in the cash market.
The stock under the F&O ban for August 28 is RBL Bank Limited
On August 26, RBL Bank shares closed at ₹254.90, down from its previous close of ₹256.800. It opened at ₹257.60 and moved between an intraday high of ₹259.40 and a low of ₹252.05. The Volume Weighted Average Price (VWAP) stood at ₹255.63.
A stock is placed under the F&O ban list when open interest exceeds 95% of MWPL, as per NSE guidelines.
During the ban:
This safeguard is meant to curb speculation and ensure orderly market function during high-activity periods like expiry days.
The Nifty 50 F&O contracts expire every Thursday of the month, unless it’s a trading holiday (in which case, expiry moves to the prior session). Settlements occur at the day’s closing price.
For ease of tracking, expiry contracts may appear under the monthly header on trading platforms during expiry week.
Read More: SEBI Considers Shift to Monthly Expiries in Derivatives Market
The National Stock Exchange (NSE) has introduced a key revision to its derivatives market calendar by rescheduling the weekly expiry of futures and options (F&O) contracts from Thursdays to Tuesdays. This strategic shift, approved by the Securities and Exchange Board of India (SEBI), will be implemented starting September 27, 2025, and will apply to all equity derivatives traded on the NSE platform.
In parallel, the Bombay Stock Exchange (BSE) has clarified that derivative contracts expiring on or before August 31, 2025, will follow the existing expiry schedule. However, for contracts expiring on or after September 1, 2025, the expiry day may be revised to Thursday, marking a potential shift in BSE’s derivatives timeline.
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: Aug 28, 2025, 7:55 AM IST
Sachin Gupta
Sachin Gupta is a Content Writer with 6+ years of experience in the stock market, including global markets like the US, Canada, and Australia. At Angel One, Sachin specialises in creating financial content that simplifies complex market trends. Sachin holds a Master's in Commerce, specialising in Economics.
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