我还没hold options到expire过,没实践过 一下是我在CBOE网站上看到的 When can you be assigned on a short equity option position? As an equity call or put option holder may exercise the contract at any time before it expires, an equity option writer may be assigned an exercise noti ce at anytime before expiration. When do options expire? Expiration day for equity and index options is the Saturday immediately foll owing the third Friday of the expiration month until February 15, 2015. On a nd after February 15, 2015, the expiration date will be the third Friday of the expiration month.