IWM implied volatility
From the closing options book · October 20, 2026 · updated after every close
IWM's at-the-money implied volatility was 17.2% at the October 20, 2026 close. Over the past 260 sessions it ranged from 10.8% to 41.8%, putting today's level at an IV rank of 21 and IV percentile of 29.
IWM at-the-money IV, last 60 sessions
Options were pricing more movement than IWM actually delivered over the last 20 sessions (17.2% implied against 15.8% realized).
IV rank places today's IV between the period's low (0) and high (100); IV percentile is the share of sessions with lower IV. Both use IWM's own closing history.
These are the October 20, 2026 closing numbers. Members see IWM's map move live all session.
Common questions
17.2% at the money at the October 20, 2026 close.
21 over the past 260 sessions (IV percentile 29).
Its IV percentile is 29: low against its own past year.
Compare: implied volatility on other tickers
Measured from the closing options book and rebuilt after every close. Nothing on this page is live. Levels are where dealer hedging is concentrated, not targets or forecasts. Not investment advice.