ICE BofA AAA US Corporate Index MF2-GARCH Volatility Analysis
Volatility prediction for Friday, October 23rd, 2026
1 Day
7.60%
1 Week
7.49%
1 Month
7.71%
Analysis last updated: Friday, October 23, 2026 at 02:30 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Oct 16, 2026Model Insight
With persistence 0.998, volatility shocks have a half-life of 444 trading days (~1.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
MF2-GARCH Model
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| Param | Value | t-stat |
|---|---|---|
| mwindow | 21 | |
| αARCH | 0.0185 | 3.31*** |
| βGARCH | 0.9768 | 248.31*** |
| γleverage | 0.0063 | 1.00 |
| λ₁tau intercept | 0.1070 | 1.58 |
| λ₂forecast adj. | 0.3153 | 1.81* |
| λ₃tau persistence | 0.0000 | 0.00 |
0.998
Persistence444d
Half-lifeMF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 21 | |
α ARCH Response to squared shocks | 0.0185 | 3.31*** |
β GARCH Volatility persistence | 0.9768 | 248.31*** |
γ leverage Additional response to negative shocks | 0.0063 | 1.00 |
λ₁ tau intercept Baseline long-term coefficient | 0.1070 | 1.58 |
λ₂ forecast adj. Forecast performance sensitivity | 0.3153 | 1.81* |
λ₃ tau persistence Long-term factor persistence | 0.0000 | 0.00 |
Persistence:
0.998
Half-life:
444 days
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