TER implied volatility
From the closing options book · October 20, 2026 · updated after every close
TER's at-the-money implied volatility was 83.4% at the October 20, 2026 close. Over the past 227 sessions it ranged from 37.0% to 133.1%, putting today's level at an IV rank of 48 and IV percentile of 72.
TER at-the-money IV, last 60 sessions
Options were pricing more movement than TER actually delivered over the last 20 sessions (83.4% implied against 55.7% 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 TER's own closing history.
These are the October 20, 2026 closing numbers. Members see TER's map move live all session.
Common questions
83.4% at the money at the October 20, 2026 close.
48 over the past 227 sessions (IV percentile 72).
Its IV percentile is 72: 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.