Arthur J. Gallagher & Co. (AJG)'s 30-day implied volatility (IV30) was 35.9% at the close on October 27, 2026, up from 35.2% the day before, against a 52-week range of 23.0% to 45.2%. Its 20-day historical volatility was 29.8%.

Key numbers

30-day implied volatility (IV30): 35.9%
IV30 52-week range: 23.0% to 45.2% (median 32.1%)
Historical volatility: 20-day 29.8%, 1-year 31.0%
Implied move by the nearest expiration: ±2.2%

Data as of October 27, 2026.

AJG Implied Volatility (IV) vs Historical Volatility (HV)

Name: AJG Implied Volatility
Creator: Market Chameleon