Grail (GRAL)'s 30-day implied volatility (IV30) was 98.7% at the close on October 30, 2026, up from 90.5% the day before, against a 52-week range of 66.0% to 118.1%. Its 20-day historical volatility was 91.6%.
Key numbers
30-day implied volatility (IV30): 98.7%
IV30 52-week range: 66.0% to 118.1% (median 86.5%)
Historical volatility: 20-day 91.6%, 1-year 83.1%
Implied move by the nearest expiration: ±5.8%
Data as of October 30, 2026.
GRAL Implied Volatility (IV) vs Historical Volatility (HV)
The GRAL IV term structure shows the implied volatility difference between different maturity dates.
