ALAB implied volatility
From the closing options book · October 20, 2026 · updated after every close
ALAB's at-the-money implied volatility was 90.1% at the October 20, 2026 close. Over the past 236 sessions it ranged from 68.7% to 175.1%, putting today's level at an IV rank of 20 and IV percentile of 44.
ALAB at-the-money IV, last 60 sessions
Options were pricing more movement than ALAB actually delivered over the last 20 sessions (90.1% implied against 62.7% 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 ALAB's own closing history.
These are the October 20, 2026 closing numbers. Members see ALAB's map move live all session.
Common questions
90.1% at the money at the October 20, 2026 close.
20 over the past 236 sessions (IV percentile 44).
Its IV percentile is 44: 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.