Amphastar Pharmaceuticals (AMPH)'s 30-day implied volatility (IV30) was 54.2% at the close on November 2, 2026, up from 47.3% the day before, against a 52-week range of 26.0% to 72.3%. Its 20-day historical volatility was 37.1%.

Key numbers

30-day implied volatility (IV30): 54.2%
IV30 52-week range: 26.0% to 72.3% (median 39.7%)
Historical volatility: 20-day 37.1%, 1-year 43.2%
Implied move by the nearest expiration: ±3.2%

Data as of November 2, 2026.

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

Name: AMPH Implied Volatility
Creator: Market Chameleon