Long call butterfly on Sensex
Buy one lower call, sell two middle calls, buy one higher call. A low-cost structure that pays most if the index ends near the middle strike. Shown per lot of 20 with illustrative numbers.
Contract basics. Sensex lot size: 20. Sensex has weekly options on BSE expiring every Thursday, so this example uses 7 days to expiry. Strikes in this example are rounded to the 100-point strike interval.
A structure for a view that the index will finish near a specific level, with a small, known maximum loss.
| Leg | Premium per unit | Cash flow |
|---|---|---|
| Buy 1 lot 81,300 CE | ₹1,071.77 | −₹21,435 |
| Sell 2 lot 82,000 CE | ₹641.05 | +₹25,642 |
| Buy 1 lot 82,700 CE | ₹339.93 | −₹6,799 |
Profit and loss at expiry
For the whole position, before charges.
Premiums are theoretical Black–Scholes values from round, illustrative inputs, not market prices. Charges and margin are not included.Price a single leg with your own numbers.
Frequently asked questions
What is the maximum loss of a long call butterfly on Sensex?
In this illustrative example, ₹2,592 per set of legs (lot size 20), before charges.
What is the lot size of Sensex options?
20 units per lot at the time of writing. Lot sizes are revised by the exchange from time to time; check the current size before trading.
When do Sensex options expire?
Sensex has weekly options on BSE expiring every Thursday, so this example uses 7 days to expiry.
What is the maximum profit on a butterfly?
The distance between two strikes minus the net premium, times the lot size, if the index ends exactly at the middle strike.
What is the maximum loss?
The net premium paid plus charges.