VALE implied volatility
From the closing options book · October 20, 2026 · updated after every close
VALE's at-the-money implied volatility was 43.9% at the October 20, 2026 close. Over the past 23 sessions it ranged from 28.6% to 45.2%, putting today's level at an IV rank of 92 and IV percentile of 91.
VALE at-the-money IV, last 60 sessions
Options were pricing more movement than VALE actually delivered over the last 20 sessions (43.9% implied against 25.4% 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 VALE's own closing history.
These are the October 20, 2026 closing numbers. Members see VALE's map move live all session.
Common questions
43.9% at the money at the October 20, 2026 close.
92 over the past 23 sessions (IV percentile 91).
Its IV percentile is 91: high 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.