CMS Energy (CMS)'s 30-day implied volatility (IV30) was 21.9% at the close on November 5, 2026, up from 18.5% the day before, against a 52-week range of 13.8% to 24.2%. Its 20-day historical volatility was 20.1%.
Key numbers
30-day implied volatility (IV30): 21.9%
IV30 52-week range: 13.8% to 24.2% (median 18.9%)
Historical volatility: 20-day 20.1%, 1-year 18.9%
Implied move by the nearest expiration: ±1.2%
Data as of November 5, 2026.
CMS Implied Volatility (IV) vs Historical Volatility (HV)
The CMS IV term structure shows the implied volatility difference between different maturity dates.
