The Board of Directors of Oil and Natural Gas Corporation Limited (ONGC) declared a dividend of Rs. 6 per share, with the ex-dividend date set for November 14, 2025.
SEBI has prescribed a framework to the exchanges for the adjustment of corporate actions in derivative contracts at the time of the corporate action. The exchange has published everything regarding the adjustments in case of corporate actions here. Accordingly, if a company declares a dividend at and above 2% of the market value of the underlying security, it is considered an extraordinary dividend, and the exchange will take action in the adjustment of the futures and options contracts in the underlying security.
Since the dividend declared by ONGC is above 2% of the market value of the security, the exchange has published this circular on the adjustment of F&O contracts in ONGC on the ex-date: November 14, 2025.
Adjustment for future contracts:
All positions in futures contracts of ONGC will be marked-to-market on the last cum-dividend date, i.e., November 13, 2025, based on the daily settlement price of the respective futures contract. Subsequently, open positions will be carried forward at the daily settlement price less Rs. 6 (dividend amount) for the respective futures contract.
From November 14, 2025 (ex-dividend date), daily mark-to-market settlement of the futures contracts would continue as per normal procedures.
For example:
Assume you bought 1 lot (2250 quantities) of ONGC futures on November 13th, 2025, at Rs. 250, and the daily settlement price at the market close is Rs. 255, you would have made a mark-to-market profit of Rs. 5 per share.
On November 14, 2025, the previous day’s position will be carried forward at Rs. 249 (i.e., 255 – 6). If the closing price on November 14th, 2025, is Rs. 252, you’ll make a mark-to-market profit of Rs. 3 per share.
Adjustment for options contracts:
The full value of the dividend, i.e., Rs. 6, will be deducted from all the cum-dividend strike prices on the ex-dividend date. All positions in existing strike prices will continue to exist in the corresponding new adjusted strike prices.
For example:
The strike price of Rs. 255 Call Option will be reduced to Rs. 249 on November 14th, 2025, and the positions in Rs. 255 Call Option will continue to exist in Rs. 249 Call Option.
The lot size of the F&O contracts will not change.
Also, if you hold equity shares of ONGC in your Demat account as of November 14th, 2025 (ex-date), you will be entitled to receive the dividend, which will be credited directly to your primary bank account within 30 to 45 days from the record date.
