Regeneron Pharmaceuticals (REGN)'s 30-day implied volatility (IV30) was 35.2% at the close on October 21, 2026, up from 34.6% the day before, against a 52-week range of 25.1% to 48.5%. Its 20-day historical volatility was 32.6%.

Key numbers

30-day implied volatility (IV30): 35.2%
IV30 52-week range: 25.1% to 48.5% (median 33.8%)
Historical volatility: 20-day 32.6%, 1-year 29.8%
Implied move by the nearest expiration: ±1.7%

Data as of October 21, 2026.

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

Name: REGN Implied Volatility
Creator: Market Chameleon