iShares 20+ Year Treasury Bond ETF (TLT)'s 30-day implied volatility (IV30) was 12.3% at the close on November 5, 2026, up from 11.5% the day before, against a 52-week range of 8.3% to 16.1%. Its 20-day historical volatility was 11.5%.

Key numbers

30-day implied volatility (IV30): 12.3%
IV30 52-week range: 8.3% to 16.1% (median 10.5%)
Historical volatility: 20-day 11.5%, 1-year 9.7%
Implied move by the nearest expiration: ±0.7%

Data as of November 5, 2026.

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

Name: TLT Implied Volatility
Creator: Market Chameleon