ALNY implied volatility
From the closing options book · October 20, 2026 · updated after every close
ALNY's at-the-money implied volatility was 64.6% at the October 20, 2026 close. Over the past 92 sessions it ranged from 37.5% to 82.2%, putting today's level at an IV rank of 61 and IV percentile of 97.
ALNY at-the-money IV, last 60 sessions
Options were pricing more movement than ALNY actually delivered over the last 20 sessions (64.6% implied against 41.0% 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 ALNY's own closing history.
These are the October 20, 2026 closing numbers. Members see ALNY's map move live all session.
Common questions
64.6% at the money at the October 20, 2026 close.
61 over the past 92 sessions (IV percentile 97).
Its IV percentile is 97: 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.