DIA implied volatility
From the closing options book · October 20, 2026 · updated after every close
DIA's at-the-money implied volatility was 14.1% at the October 20, 2026 close. Over the past 260 sessions it ranged from 8.0% to 26.7%, putting today's level at an IV rank of 33 and IV percentile of 55.
DIA at-the-money IV, last 60 sessions
Options were pricing more movement than DIA actually delivered over the last 20 sessions (14.1% implied against 9.5% 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 DIA's own closing history.
These are the October 20, 2026 closing numbers. Members see DIA's map move live all session.
Common questions
14.1% at the money at the October 20, 2026 close.
33 over the past 260 sessions (IV percentile 55).
Its IV percentile is 55: 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.