V-Lab
Vinacomin Vang Danh Coal MF2-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
22.16%
decreased by 0.63%
1 Week
24.41%
increased by 1.62%
1 Month
27.62%
increased by 4.83%
Analysis last updated: Friday, September 11, 2026 at 09:38 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 10, 2011 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 2 trading days, meaning a shock loses half its impact after approximately 2 days.
σ
MF2-GARCH Model
Tap to view equation
Shock decay: Shocks decay with a 2-day half-life
| Param | Value | t-stat |
|---|---|---|
| mwindow | 61 | |
| αARCH | 0.1650 | 4.83*** |
| βGARCH | 0.6153 | 9.64*** |
| γleverage | -0.0573 | -1.39 |
| λ₁tau intercept | 1.0199 | 2.78*** |
| λ₂forecast adj. | 0.8814 | 9.23*** |
| λ₃tau persistence | 0.0000 | 0.00 |
0.752
Persistence2d
Half-lifeσ
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 61 | |
α ARCH Response to squared shocks | 0.1650 | 4.83*** |
β GARCH Volatility persistence | 0.6153 | 9.64*** |
γ leverage Additional response to negative shocks | -0.0573 | -1.39 |
λ₁ tau intercept Baseline long-term coefficient | 1.0199 | 2.78*** |
λ₂ forecast adj. Forecast performance sensitivity | 0.8814 | 9.23*** |
λ₃ tau persistence Long-term factor persistence | 0.0000 | 0.00 |
Persistence:
0.752
Half-life:
2 days
Other Vinacomin Vang Danh Coal Analyses
Other MF2-GARCH Analyses on International Equities