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Glossary · Options

Expiration

The last day an option exists. After it, the option is exercised or worthless.

Why it matters

Most listed stock options expire on Fridays. Monthly options expire on the third Friday.

How to read it

The further out the expiration, the more the option costs, but the slower it loses value each day.

Related

Days to expirationHow many calendar days remain until an option expires.ThetaHow much value an option loses each day from time passing, all else equal.

In the Cluenex app, this explanation opens next to every expiration figure, with the live reading for the stock you are looking at. Open it in Cluenex