Options Expiry Timing

Calculation

Options expiry timing fundamentally represents the scheduled date and time when a specific series of options contracts ceases to exist, transitioning from active trading to settlement or expiration. This timing is critical as it dictates the final opportunity for option holders to exercise their rights, or for contracts to be automatically settled based on the underlying asset’s price relative to the strike price. Precise calculation of this date is essential for traders managing risk and implementing strategies dependent on time decay, or theta, and potential price movements near expiration. Exchanges standardize expiry cycles, typically monthly, but variations exist, influencing liquidity and volatility patterns.