State Street (STT)'s 30-day implied volatility (IV30) was 25.6% at the close on October 21, 2026, up from 25.4% the day before, against a 52-week range of 19.0% to 43.4%. Its 20-day historical volatility was 21.2%.
Key numbers
30-day implied volatility (IV30): 25.6%
IV30 52-week range: 19.0% to 43.4% (median 28.1%)
Historical volatility: 20-day 21.2%, 1-year 25.8%
Implied move by the nearest expiration: ±1.6%
Data as of October 21, 2026.
STT Implied Volatility (IV) vs Historical Volatility (HV)
The STT IV term structure shows the implied volatility difference between different maturity dates.
