TENB implied volatility
From the closing options book · October 20, 2026 · updated after every close
TENB's at-the-money implied volatility was 84.5% at the October 20, 2026 close. Over the past 34 sessions it ranged from 55.7% to 168.9%, putting today's level at an IV rank of 25 and IV percentile of 76.
TENB at-the-money IV, last 60 sessions
Options were pricing more movement than TENB actually delivered over the last 20 sessions (84.5% implied against 59.2% 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 TENB's own closing history.
These are the October 20, 2026 closing numbers. Members see TENB's map move live all session.
Common questions
84.5% at the money at the October 20, 2026 close.
25 over the past 34 sessions (IV percentile 76).
Its IV percentile is 76: 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.