Glossary · Options

Open interest

The number of option contracts that are open and not yet closed or expired.

Why it matters

More open interest means more traders to deal with, so tighter prices when you want out.

How to read it

Look for 500 or more contracts at the strikes you trade.

Also called: OI

Related

LiquidityHow easily you can trade without moving the price, shown by tight bid and ask prices and real volume.VolumeHow many shares changed hands during a day.

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