V-Lab
ICE BofAML U.S. Bond Market 6 Month Option Volatility Estimate Index APARCH Volatility Analysis
Volatility prediction for Friday, September 4th, 2026
1 Day
29.63%
1 Week
30.72%
1 Month
34.01%
Analysis last updated: Friday, September 4, 2026 at 11:27 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 26, 2008 to Aug 27, 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 = 1.52 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
APARCH Model
Tap to view equation
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1762 | 3.81*** |
| αARCH | 0.1569 | 5.80*** |
| βGARCH | 0.8226 | 31.71*** |
| γleverage | -0.2244 | -2.09** |
| δpower | 1.5173 | 6.73*** |
0.961
Persistence17d
Half-lifeAPARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1762 | 3.81*** |
α ARCH Response to squared shocks | 0.1569 | 5.80*** |
β GARCH Volatility persistence | 0.8226 | 31.71*** |
γ leverage Additional response to negative shocks | -0.2244 | -2.09** |
δ power Transformation power | 1.5173 | 6.73*** |
Persistence:
0.961
Half-life:
17 days
Other ICE BofAML U.S. Bond Market 6 Month Option Volatility Estimate Index Analyses
Other APARCH Analyses on Volatility Indices