ALLY implied volatility
From the closing options book · October 20, 2026 · updated after every close
ALLY's at-the-money implied volatility was 34.2% at the October 20, 2026 close. Over the past 34 sessions it ranged from 23.4% to 55.9%, putting today's level at an IV rank of 33 and IV percentile of 85.
ALLY at-the-money IV, last 60 sessions
Options were pricing more movement than ALLY actually delivered over the last 20 sessions (34.2% implied against 17.3% 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 ALLY's own closing history.
These are the October 20, 2026 closing numbers. Members see ALLY's map move live all session.
Common questions
34.2% at the money at the October 20, 2026 close.
33 over the past 34 sessions (IV percentile 85).
Its IV percentile is 85: 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.