Jack In The Box (JACK)'s 30-day implied volatility (IV30) was 66.7% at the close on October 21, 2026, up from 61.9% the day before, against a 52-week range of 48.6% to 114.2%. Its 20-day historical volatility was 52.1%.
Key numbers
30-day implied volatility (IV30): 66.7%
IV30 52-week range: 48.6% to 114.2% (median 72.7%)
Historical volatility: 20-day 52.1%, 1-year 70.8%
Implied move by the nearest expiration: ±3.9%
Data as of October 21, 2026.
JACK Implied Volatility (IV) vs Historical Volatility (HV)
The JACK IV term structure shows the implied volatility difference between different maturity dates.
