ICE BofAML U.S. Bond Market 6 Month Option Volatility Estimate Index APARCH Volatility Analysis
Volatility prediction for Friday, July 17th, 2026
1 Day
36.34%
1 Week
36.87%
1 Month
38.50%
Analysis last updated: Friday, July 17, 2026 at 11:34 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 26, 2008 to Jul 2, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 100% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets. The volatility power δ = 1.51 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1752 | 15.19*** |
α ARCH Response to squared shocks | 0.1582 | 23.21*** |
β GARCH Volatility persistence | 0.8222 | 126.49*** |
γ leverage Additional response to negative shocks | -0.2250 | -8.40*** |
δ power Transformation power | 1.5087 | 26.57*** |
Persistence:
0.961
Half-life:
18 days
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