What happens if the option seller cannot meet physical settlement obligations?

F&O
1

Suppose I buy a call option with the intention of taking physical delivery, and I do not square off my position before expiry.
I ensure that I have the required delivery margin, and at expiry the option is ITM.

Since equity options in India are physically settled, I expect to receive the shares at my strike price.

My question is about the seller’s side:

What happens if the option seller does not have sufficient funds or shares to meet the settlement obligation?

There must exist a seller on the other side who is unable to square off, and assume he/she reaches expiry without having sufficient margin or shares available for settlement(His/her broker also cant square off position as I don’t want to.)

In that case:

• How does the exchange ensure delivery to the buyer?
• What if the seller is unable to arrange the required funds or shares?
• Since I want shares (not cash), cash settlement would not protect me, especially if the stock gaps up the next day.

How exactly does the clearing corporation handle such situations so that the buyer still receives shares at the strike price?

2

• You don’t depend on the seller.
• The clearing corporation (NSCCL) guarantees delivery.

If the seller can’t give shares or money:
• NSCCL buys the shares from the market (auction) and gives them to you. (Short delivery case for seller)
• The loss + penalty is taken from the seller.

If even auction fails (very rare):
• You are closed out at a penalty price, not normal price.
• Seller still pays the damage.

If you have money, you get shares.
Seller failure is not your problem.

3

And that loss+ penalty recovered from initial margin . Thanks @niftymonk

4

Normally, the seller already has enough margin because margins are increased sharply before expiry.

If despite that the seller still defaults:
• The loss + penalty is first taken from the seller’s margins.
• If margins are insufficient, the broker pays the clearing corporation.
• The broker then recovers the amount from the client later.

So at no point is the buyer affected.
Money flows seller → broker → clearing corporation, not to you.

You’re protected as long as you’ve paid your funds.

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