State Street SPDR Portfolio Aggregate Bond ETF (SPAB)'s 30-day implied volatility (IV30) was 4.4% at the close on October 21, 2026, down from 4.5% the day before, against a 52-week range of 3.0% to 12.8%. Its 20-day historical volatility was 6.5%.

Key numbers

30-day implied volatility (IV30): 4.4%
IV30 52-week range: 3.0% to 12.8% (median 4.9%)
Historical volatility: 20-day 6.5%, 1-year 4.6%
Implied move by the nearest expiration: ±0.3%

Data as of October 21, 2026.

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

Name: SPAB Implied Volatility
Creator: Market Chameleon