Expiry Date

An expiry date is the last day you can exercise (use) an options contract—the deadline for buying or selling the underlying stock at the agreed price. After that date, the contract becomes worthless and disappears. You'll run into expiry dates whenever you trade options (contracts that give you the right, but not the obligation, to buy or sell a stock at a set price). It matters because missing the expiry date means losing your chance to act, so you need to pay attention to the calendar. For example, if you own a call option on TechCorp stock that expires on March 15th, you must decide whether to buy the stock by that date or let the option die.