Federal Signal (FSS)'s 30-day implied volatility (IV30) was 48.5% at the close on October 23, 2026, up from 48.3% the day before, against a 52-week range of 21.7% to 59.5%. Its 20-day historical volatility was 33.5%.
Key numbers
30-day implied volatility (IV30): 48.5%
IV30 52-week range: 21.7% to 59.5% (median 33.9%)
Historical volatility: 20-day 33.5%, 1-year 34.3%
Implied move by the nearest expiration: ±3.0%
Data as of October 23, 2026.
FSS Implied Volatility (IV) vs Historical Volatility (HV)
The FSS IV term structure shows the implied volatility difference between different maturity dates.
