Options Expiration Calendar. Standard options typically expire on the third friday of each month, providing a predictable pattern for strategizing. Options can have various expiration periods, ranging from as short as one day (zero days to expiration) to several months or even years.

The opex indicator is designed to provide traders with a visual representation of key options expiration dates, particularly for monthly, quarterly, and vix. The options expiration calendar shows the date on which an options contract is no longer valid.