Protective call (against short futures)
Also called: Short futures + long call
Hold short futures and buy a call: the call caps the loss if the market rallies, for the cost of its premium.
Payoff sketch (per unit, index points)
Debit 108 pts
Large as the price falls
−277 pts (₹18,010 per lot)
24,923
How it works
The call pays everything above its strike, so the short futures cannot lose more than the distance to the call strike plus the premium.
At expiry the payoff matches a long put at the call's strike.
When traders use it
- Holding a short futures position through an event with a known maximum loss.
Greeks
| Delta | Negative: −1 plus the call's delta. |
| Gamma | Positive. |
| Theta | Negative. |
| Vega | Positive. |
Profit, loss and margin
| Max profit | Large: futures entry − call premium if the underlying fell to zero. |
| Max loss | (Call strike − futures entry + call premium) × quantity. |
| Breakeven | Futures entry − call premium. |
| Margin | The futures margin, often reduced by the hedge. |
In India
- Futures are marked to market daily and need SPAN plus exposure margin; STT is charged on the sell side (0.05% from 1 April 2026 in Arthfy's cost model). Index futures expire monthly.
- A long option that finishes in the money is exercised automatically. STT is then charged on its intrinsic value at the exercise rate (0.15% from 1 April 2026 in Arthfy's cost model), instead of the sale rate on the premium (also 0.15%) that applies when the option is sold before the close. See the lesson on the STT exercise trap.
- SPAN margins the whole position, so a defined-risk spread usually blocks far less than its short leg alone. Brokers grant the hedge benefit only when the protective leg is actually in the account, which is why the long leg is usually placed first.
Arthfy numbers
At expiry this has the same payoff as a long put at the call's strike; see the long put page for Arthfy's history of that shape. See Long put.
