Comcast - Class A (CMCSA)'s 30-day implied volatility (IV30) was 32.8% at the close on November 13, 2026, down from 33.5% the day before, against a 52-week range of 18.2% to 43.4%. Its 20-day historical volatility was 33.7%.

Key numbers

30-day implied volatility (IV30): 32.8%
IV30 52-week range: 18.2% to 43.4% (median 31.6%)
Historical volatility: 20-day 33.7%, 1-year 29.9%
Implied move by the nearest expiration: ±2.1%

Data as of November 13, 2026.

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

Name: CMCSA Implied Volatility
Creator: Market Chameleon