Spok Holdings (SPOK)'s 30-day implied volatility (IV30) was 26.6% at the close on October 21, 2026, down from 27.2% the day before, against a 52-week range of 18.5% to 37.7%. Its 20-day historical volatility was 26.3%.
Key numbers
30-day implied volatility (IV30): 26.6%
IV30 52-week range: 18.5% to 37.7% (median 25.3%)
Historical volatility: 20-day 26.3%, 1-year 27.0%
Implied move by the nearest expiration: ±1.7%
Data as of October 21, 2026.
SPOK Implied Volatility (IV) vs Historical Volatility (HV)
The SPOK IV term structure shows the implied volatility difference between different maturity dates.
