Kotak Bank Limited (KOTAKBANK) has announced a split in the face value of its equity shares from FV of Rs. 5 per share to Rs. 1 per share and has fixed January 14, 2026, as the record date.
As a result, the Futures and Options contracts of KOTAKBANK will be adjusted according to the framework prescribed by SEBI. The adjustment will result in a change in the Strike Price and Lot Size of Options and the Price and Lot Size of the Futures contracts. The changes will come into effect on the ex-date, January 14, 2026. You can check the announcement from the exchange here.
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 the case of corporate actions here. The adjustments are carried out so that the value of the position of the market participants, on the cum and ex-dates for the corporate action, continues to remain the same as far as possible.
Here’s how the adjustment works:
The adjustment factor for the stock split of A: B is defined as (A/B). In the case of KOTAKBANK, the adjustment factor is (5/1) = 5, since the split ratio is 5:1.
Adjustment of Futures Contracts:
Futures base price: The adjusted futures base price will be arrived at by dividing the settlement price of the future one day before the ex-date by the adjustment factor.
Futures lot size: The adjusted market lot will be arrived at by multiplying the old market lot by the adjustment factor. The revised market lot would be 2000.
Example: If you are holding a position in KOTAKBANK January FUT and on pre-ex-date (January 13, 2026), futures close at 2220, on ex-date the price will be adjusted to 444 (Price on pre-ex-date: 2220 / Adjustment Factor: 5). While the lot size will be adjusted to 2000 (Current lot size: 400 * Adjustment Factor: 5).
Adjustment of Options Contracts:
Strike Price: The adjusted strike price will be arrived at by dividing the old strike price by the adjustment factor.
Lot Size: The adjusted lot size will be arrived at by multiplying the old market lot by the adjustment factor. The revised lot size would be 2000.
Example: If you are holding a position in KOTAKBANK January 2200 CE, the current lot size is 400. On ex-date, the 2200 CE will be adjusted to 440 CE (Strike Price: 2200 / Adjustment Factor: 5), and the lot size will be adjusted to 2000 (Current Lot Size: 400 * Adjustment Factor: 5).
Those holding positions in F&O contracts are not eligible for corporate action benefits. If you are holding equity shares of KOTAKBANK on the record date (January 14, 2026), you will be eligible to receive the split shares.
The credit of shares can take up to 2 working days from the record date (January 14, 2026). You can check out more details here.