ICE BofAML U.S. Bond Market 3 Month Option Volatility Estimate Index APARCH Volatility Analysis
Volatility prediction for Friday, October 9th, 2026
1 Day
56.56%
1 Week
55.81%
1 Month
53.51%
Analysis last updated: Saturday, October 10, 2026 at 02:29 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 26, 1995 to Oct 8, 2026Model Insight
Volatility shocks decay with a half-life of 15 trading days, meaning a shock loses half its impact after approximately 15 days. The volatility power δ = 1.63 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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| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.2577 | 2.76*** |
| αARCH | 0.0948 | 3.93*** |
| βGARCH | 0.8672 | 36.22*** |
| γleverage | -0.3333 | -1.87* |
| δpower | 1.6288 | 4.58*** |
0.956
Persistence15d
Half-lifeAPARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2577 | 2.76*** |
α ARCH Response to squared shocks | 0.0948 | 3.93*** |
β GARCH Volatility persistence | 0.8672 | 36.22*** |
γ leverage Additional response to negative shocks | -0.3333 | -1.87* |
δ power Transformation power | 1.6288 | 4.58*** |
Persistence:
0.956
Half-life:
15 days
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