GWW implied volatility
From the closing options book · October 20, 2026 · updated after every close
GWW's at-the-money implied volatility was 27.6% at the October 20, 2026 close. Over the past 238 sessions it ranged from 16.2% to 44.1%, putting today's level at an IV rank of 41 and IV percentile of 68.
GWW at-the-money IV, last 60 sessions
Options were pricing more movement than GWW actually delivered over the last 20 sessions (27.6% implied against 19.3% 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 GWW's own closing history.
These are the October 20, 2026 closing numbers. Members see GWW's map move live all session.
Common questions
27.6% at the money at the October 20, 2026 close.
41 over the past 238 sessions (IV percentile 68).
Its IV percentile is 68: 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.