Sionna Therapeutics (SION)'s 30-day implied volatility (IV30) was 69.7% at the close on October 20, 2026, down from 72.8% the day before, against a 52-week range of 58.3% to 318.6%. Its 20-day historical volatility was 69.6%.

Key numbers

30-day implied volatility (IV30): 69.7%
IV30 52-week range: 58.3% to 318.6% (median 81.8%)
Historical volatility: 20-day 69.6%, 1-year 84.2%
Implied move by the nearest expiration: ±4.6%

Data as of October 20, 2026.

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

Name: SION Implied Volatility
Creator: Market Chameleon