State Street SPDR S&P Biotech ETF (XBI)'s 30-day implied volatility (IV30) was 35.0% at the close on October 28, 2026, up from 32.5% the day before, against a 52-week range of 25.7% to 43.3%. Its 20-day historical volatility was 33.6%.

Key numbers

30-day implied volatility (IV30): 35.0%
IV30 52-week range: 25.7% to 43.3% (median 30.5%)
Historical volatility: 20-day 33.6%, 1-year 29.5%
Implied move by the nearest expiration: ±2.0%

Data as of October 28, 2026.

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

Name: XBI Implied Volatility
Creator: Market Chameleon