Every option lesson so far ends at the same cliff: expiry. This is where the abstractions become an actual obligation, and in India it is where a surprising number of traders receive a bill they did not expect. The reason is a rule many never absorbed — stock derivatives here are physically settled — and it turns a forgotten in-the-money option into a delivery of real shares worth far more than the premium.
You put a token on a bulk order thinking you could flip the booking for a small profit. You forget to sell it on, the delivery date arrives, and the truck shows up with the entire consignment — and the full bill. Your small speculative token has become a large purchase you must now pay for.
That is physical settlement of an in-the-money stock option. The small premium you paid to speculate becomes an obligation to take delivery of the full lot of shares, at a cost far beyond what you risked, unless you closed the position first.
Two settlement worlds
| Instrument | Settlement | At expiry, in the money |
|---|---|---|
| Index options / futures | Cash-settled | Paid or charged the cash difference |
| Stock options / futures | Physically settled | Delivery obligation — actual shares change hands |
| Any option, out of the money | Expires worthless | Nothing to settle; premium is lost/kept |
European style: assignment happens at expiry
Indian options are European, meaning they can only be exercised at expiry, not on any earlier day. For an option buyer this changes nothing about your ability to trade — you can close the position whenever you like; it only means you cannot exercise early. For an option seller it is genuinely helpful: you cannot be assigned out of the blue midway through the contract, as American-style options allow. Assignment comes only at expiry, and only for options that finish in the money — which means a seller can see it coming.
- Out of the money: it expires worthless, premium lost
- In the money, index: you receive the cash difference
- In the money, stock: you owe/receive delivery — close it first
- You can always sell to close before expiry instead
- Out of the money: you keep the premium, nothing owed
- In the money, index: you pay the cash difference
- In the money, stock: you are assigned a delivery obligation
- European style means assignment only at expiry, never early
You are long an in-the-money stock call and take no action; it goes to expiry. What happens in India?
- Index options and futures are cash-settled; stock options and futures are physically settled.
- An in-the-money stock option carried to expiry becomes a real delivery obligation, not a cash payout.
- Indian options are European — exercisable only at expiry, so a seller is assigned only then, never early.
- Out-of-the-money options simply expire worthless, with nothing to settle either way.
- Close in-the-money stock options before expiry unless you genuinely intend to take or give delivery.
Mark it done to track your progress through the curriculum.
Common questions
Short, direct answers to what people ask about this topic.
- are stock options in india physically settled
- Yes. Stock futures and options in India are physically settled, so an in-the-money stock option carried to expiry results in an actual delivery obligation — taking or giving the shares — rather than a cash difference. Index options remain cash-settled. This distinction matters enormously, because a stock option left to expire in the money can turn into a large delivery obligation the trader never intended.
- what happens if i dont square off an option on expiry
- For an in-the-money stock option, not squaring off means it goes to physical settlement and you incur a delivery obligation — you must take delivery of the shares if long a call or in-the-money short a put, which requires the full contract value or the margin for it. For a cash-settled index option, it simply settles for its intrinsic value in cash. Out-of-the-money options expire worthless either way.
- are indian options european or american style
- Indian index and stock options are European style, which means they can only be exercised at expiry, not on any day before it. So assignment for an option seller happens at expiry rather than at random beforehand, which removes one uncertainty that American-style options carry. You can still close the position by trading out of it at any time; European style limits only exercise, not trading.
- what is assignment in options
- Assignment is when an option seller is called upon to fulfil the contract because the buyer exercises — the seller of a call must deliver, and the seller of a put must take delivery, at the strike. Because Indian options are European, assignment happens at expiry for options that finish in the money. A seller carrying an in-the-money option to expiry should expect to be assigned and to meet the resulting obligation.
- why did i get a huge bill on an option that expired in the money
- Almost certainly physical settlement of a stock option: an in-the-money stock option carried to expiry became a delivery obligation for the full value of the shares, plus the associated settlement costs, rather than a small cash difference. This is the classic trap of not squaring off an in-the-money stock option before expiry. The defence is simple — close in-the-money stock options before expiry unless you genuinely intend to take or give delivery.