BRUN implied volatility
From the closing options book · October 20, 2026 · updated after every close
BRUN's at-the-money implied volatility was 200.2% at the October 20, 2026 close. Over the past 27 sessions it ranged from 103.5% to 242.0%, putting today's level at an IV rank of 70 and IV percentile of 93.
BRUN at-the-money IV, last 60 sessions
Options were pricing more movement than BRUN actually delivered over the last 20 sessions (200.2% implied against 125.4% 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 BRUN's own closing history.
These are the October 20, 2026 closing numbers. Members see BRUN's map move live all session.
Common questions
200.2% at the money at the October 20, 2026 close.
70 over the past 27 sessions (IV percentile 93).
Its IV percentile is 93: 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.