SFM implied volatility
From the closing options book · October 20, 2026 · updated after every close
SFM's at-the-money implied volatility was 55.0% at the October 20, 2026 close. Over the past 20 sessions it ranged from 38.2% to 75.5%, putting today's level at an IV rank of 45 and IV percentile of 75.
SFM at-the-money IV, last 60 sessions
Options were pricing more movement than SFM actually delivered over the last 20 sessions (55.0% implied against 32.4% 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 SFM's own closing history.
These are the October 20, 2026 closing numbers. Members see SFM's map move live all session.
Common questions
55.0% at the money at the October 20, 2026 close.
45 over the past 20 sessions (IV percentile 75).
Its IV percentile is 75: 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.