Merck Common (New) (MRK)'s 30-day implied volatility (IV30) was 30.0% at the close on November 9, 2026, down from 32.0% the day before, against a 52-week range of 21.2% to 38.7%. Its 20-day historical volatility was 37.0%.

Key numbers

30-day implied volatility (IV30): 30.0%
IV30 52-week range: 21.2% to 38.7% (median 28.7%)
Historical volatility: 20-day 37.0%, 1-year 29.2%
Implied move by the nearest expiration: ±2.1%

Data as of November 9, 2026.

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

Name: MRK Implied Volatility
Creator: Market Chameleon