IBKR implied volatility
From the closing options book · October 20, 2026 · updated after every close
IBKR's at-the-money implied volatility was 39.6% at the October 20, 2026 close. Over the past 213 sessions it ranged from 32.3% to 56.6%, putting today's level at an IV rank of 30 and IV percentile of 31.
IBKR at-the-money IV, last 60 sessions
Options were pricing more movement than IBKR actually delivered over the last 20 sessions (39.6% implied against 32.0% 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 IBKR's own closing history.
These are the October 20, 2026 closing numbers. Members see IBKR's map move live all session.
Common questions
39.6% at the money at the October 20, 2026 close.
30 over the past 213 sessions (IV percentile 31).
Its IV percentile is 31: 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.