V-Lab
CBOE Google Volatility Index MF2-GARCH Volatility Analysis
Volatility prediction for Friday, August 7th, 2026
1 Day
105.93%
increased by 27.47%
1 Week
102.15%
increased by 23.69%
1 Month
100.55%
increased by 22.09%
Analysis last updated: Friday, August 7, 2026 at 11:37 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 7, 2011 to Jul 31, 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
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 66 | |
α ARCH Response to squared shocks | 0.3394 | 19.83*** |
β GARCH Volatility persistence | 0.1122 | 6.78*** |
γ leverage Additional response to negative shocks | 0.0092 | 0.30 |
λ₁ tau intercept Baseline long-term coefficient | 0.7968 | 0.38 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0208 | 0.61 |
λ₃ tau persistence Long-term factor persistence | 0.9666 | 16.41*** |
Persistence:
0.456
Half-life:
1 days
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