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19 Sep 2025, 09:05 PM
Adjustment of F&O contracts of PIDILITIND on account of bonus.
As per the circular, effective from September 23, 2025, the PIDILITIND F&O contracts will be revised based on the bonus adjustment factor.
Calculation of the adjustment factor:
The adjustment factor for a bonus issue of A: B is defined as (A+B)/B. For PIDILITIND, the adjustment factor is (1+1)/1 = 2 since the bonus issue ratio is 1:1.
Adjustment for Options Contracts:
Strike Price: The adjusted strike price is calculated by dividing the old strike price by the adjustment factor.
Lot Size: The adjusted lot size is arrived at by multiplying the old market lot by the adjustment factor. The revised lot size would be 500.
For example:
Assume you hold a position in PIDILITIND 3000 CE. The current lot size is 250. On ex-date, the 3000 CE will be adjusted to 1500 (Strike Price 3000 / Adjustment Factor 2), and the lot size will be adjusted to 500 (Current Lot Size: 250 * Adjustment Factor 2).
Adjustment for Futures Contracts:
Futures base price: The adjusted futures base price is 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 500.
For example:
Assume you are holding a position in PIDILITIND SEP FUT and on pre-ex-date (Sep 22, 2025), futures close at 3070, on ex-date, the price will be adjusted to 1535 (Price on pre-ex-date: 3070 / Adjustment Factor: 2)
While the lot size will be adjusted to 500 (Current lot size: 250 * Adjustment Factor: 2).
You can learn more about this here.
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