Glossary · Options

IV percentile

The share of days in the past year when implied volatility was lower than today.

Why it matters

Less sensitive to one-off spikes than IV rank. When the two disagree, trust the percentile and look at the IV chart.

How to read it

Above 70 means options have rarely been pricier this year.

Related

IV rankWhere today’s implied volatility sits between its lowest and highest level of the past year, from 0 to 100.

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