DUOL implied volatility
From the closing options book · October 20, 2026 · updated after every close
DUOL's at-the-money implied volatility was 66.0% at the October 20, 2026 close. Over the past 83 sessions it ranged from 46.9% to 105.4%, putting today's level at an IV rank of 33 and IV percentile of 59.
DUOL at-the-money IV, last 60 sessions
Options were pricing more movement than DUOL actually delivered over the last 20 sessions (66.0% implied against 51.7% 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 DUOL's own closing history.
These are the October 20, 2026 closing numbers. Members see DUOL's map move live all session.
Common questions
66.0% at the money at the October 20, 2026 close.
33 over the past 83 sessions (IV percentile 59).
Its IV percentile is 59: middling 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.