CBOE Google Volatility Index MF2-GARCH Volatility Analysis
Volatility prediction for Monday, October 19th, 2026
1 Day
76.21%
increased by 4.10%
1 Week
86.51%
increased by 14.40%
1 Month
89.93%
increased by 17.82%
Analysis last updated: Monday, October 19, 2026 at 11:40 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 7, 2011 to Oct 16, 2026Model Insight
Volatility shocks decay with a half-life of 1 trading day, meaning a shock loses half its impact after approximately 1 day.
σ
MF2-GARCH Model
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Shock decay: Shocks decay with a 1-day half-life
| Param | Value | t-stat |
|---|---|---|
| mwindow | 66 | |
| αARCH | 0.3384 | 4.29*** |
| βGARCH | 0.1131 | 1.78* |
| γleverage | 0.0172 | 0.14 |
| λ₁tau intercept | 0.5851 | 0.84 |
| λ₂forecast adj. | 0.0218 | 1.57 |
| λ₃tau persistence | 0.9688 | 45.88*** |
0.460
Persistence1d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 66 | |
α ARCH Response to squared shocks | 0.3384 | 4.29*** |
β GARCH Volatility persistence | 0.1131 | 1.78* |
γ leverage Additional response to negative shocks | 0.0172 | 0.14 |
λ₁ tau intercept Baseline long-term coefficient | 0.5851 | 0.84 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0218 | 1.57 |
λ₃ tau persistence Long-term factor persistence | 0.9688 | 45.88*** |
Persistence:
0.460
Half-life:
1 days
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