Definition
Pin Risk
Pin risk is the danger that the underlying closes right at an option's strike on expiry, leaving the outcome of the position uncertain.
When the underlying expires almost exactly at a strike, an option that is barely in or out of the money creates uncertainty over whether it will be exercised or expire worthless — especially relevant for physically settled stock options on the NSE. The position's final delivery or settlement is essentially a coin toss.
For Indian stock-option writers, pin risk near a heavily traded strike (often the max pain level) can mean an unexpected physical delivery obligation. Traders manage it by squaring off at-the-money positions before expiry rather than gambling on which side of the strike the close lands.
Related terms
- Max PainMax pain is the strike price at which the largest number of option buyers would lose money on expiry.
- Physical vs Cash SettlementPhysical settlement delivers the actual shares at expiry, while cash settlement just exchanges the profit or loss in money.
Plain-English explainer from The Dispatch Investors Encyclopedia. General information, not financial advice.