State Street SPDR Portfolio Long Term Treasury ETF (SPTL)'s 30-day implied volatility (IV30) was 12.8% at the close on October 16, 2026, up from 12.6% the day before, against a 52-week range of 4.1% to 14.8%. Its 20-day historical volatility was 12.2%.

Key numbers

30-day implied volatility (IV30): 12.8%
IV30 52-week range: 4.1% to 14.8% (median 8.6%)
Historical volatility: 20-day 12.2%, 1-year 8.9%
Implied move by the nearest expiration: ±0.9%

Data as of October 16, 2026.

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

Name: SPTL Implied Volatility
Creator: Market Chameleon