SPY implied volatility
From the closing options book · October 20, 2026 · updated after every close
SPY's at-the-money implied volatility was 12.5% at the October 20, 2026 close. Over the past 260 sessions it ranged from 6.3% to 30.4%, putting today's level at an IV rank of 26 and IV percentile of 42.
SPY at-the-money IV, last 60 sessions
Options were pricing more movement than SPY actually delivered over the last 20 sessions (12.5% implied against 8.8% 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 SPY's own closing history.
These are the October 20, 2026 closing numbers. Members see SPY's map move live all session.
Common questions
12.5% at the money at the October 20, 2026 close.
26 over the past 260 sessions (IV percentile 42).
Its IV percentile is 42: 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.