Energy Recovery (ERII)'s 30-day implied volatility (IV30) was 56.5% at the close on October 27, 2026, up from 48.3% the day before, against a 52-week range of 23.9% to 90.9%. Its 20-day historical volatility was 32.3%.
Key numbers
30-day implied volatility (IV30): 56.5%
IV30 52-week range: 23.9% to 90.9% (median 44.7%)
Historical volatility: 20-day 32.3%, 1-year 42.2%
Implied move by the nearest expiration: ±3.1%
Data as of October 27, 2026.
ERII Implied Volatility (IV) vs Historical Volatility (HV)
The ERII IV term structure shows the implied volatility difference between different maturity dates.
