Fuel Tech (FTEK)'s 30-day implied volatility (IV30) was 64.1% at the close on October 20, 2026, down from 76.2% the day before, against a 52-week range of 48.1% to 125.0%. Its 20-day historical volatility was 86.5%.
Key numbers
30-day implied volatility (IV30): 64.1%
IV30 52-week range: 48.1% to 125.0% (median 72.5%)
Historical volatility: 20-day 86.5%, 1-year 77.5%
Implied move by the nearest expiration: ±4.8%
Data as of October 20, 2026.
FTEK Implied Volatility (IV) vs Historical Volatility (HV)
The FTEK IV term structure shows the implied volatility difference between different maturity dates.
