Expiration Date The day on which an options or futures contract is no longer valid and, therefore, ceases to exist. Investopedia Says: The expiration date for all listed stock options in the U.S. is the third Friday of the expiration month (except when it falls on a holiday, in which case it is on Thursday). Related Terms: Back Month Contract Expiration Cycle Max Pain Must Be Filled - MBF Nearby Month One-Touch Option Option Cycle Outperformance Option Termination Date Vertical Spread |