Westlake (WLK)'s 30-day implied volatility (IV30) was 47.8% at the close on October 23, 2026, down from 49.5% the day before, against a 52-week range of 29.6% to 61.7%. Its 20-day historical volatility was 42.8%.
Key numbers
30-day implied volatility (IV30): 47.8%
IV30 52-week range: 29.6% to 61.7% (median 46.6%)
Historical volatility: 20-day 42.8%, 1-year 42.8%
Implied move by the nearest expiration: ±3.1%
Data as of October 23, 2026.
WLK Implied Volatility (IV) vs Historical Volatility (HV)
The WLK IV term structure shows the implied volatility difference between different maturity dates.
