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BREAKING DOWN 'Expiration Date (Derivatives)'. The expiration date for all listed stock options in the United States is normally the third Friday of the contract month, which is the month when the contract expires.However, when that Friday falls on a holiday, the expiration date is on the Thursday immediately before the third Friday.Once an options or futures contract passes its expiration date, the contract is invalid.owever, when that Friday falls on a holiday, the expiration date is on the Thursday immediately before the third Friday. Once an options or futures contract passes its expiration date, the contract is invalid.
There are six flavors of SPX options: The standard AM settled options that expire on the morning of the third Friday of the month (SPX). These are floor traded and tend to have relatively wide bid/ask spreads. Their expiration value is published under the ticker SET (^SET for Yahoo Finance).