MUB implied volatility
From the closing options book · October 20, 2026 · updated after every close
MUB's at-the-money implied volatility was 10.2% at the October 20, 2026 close. Over the past 260 sessions it ranged from 3.5% to 17.3%, putting today's level at an IV rank of 48 and IV percentile of 87.
MUB at-the-money IV, last 60 sessions
Options were pricing more movement than MUB actually delivered over the last 20 sessions (10.2% implied against 6.8% 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 MUB's own closing history.
These are the October 20, 2026 closing numbers. Members see MUB's map move live all session.
Common questions
10.2% at the money at the October 20, 2026 close.
48 over the past 260 sessions (IV percentile 87).
Its IV percentile is 87: 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.