V-Lab
Hevol Services Group Co Ltd MF2-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
47.47%
decreased by 1.74%
1 Week
48.05%
decreased by 1.16%
1 Month
50.07%
increased by 0.86%
Analysis last updated: Tuesday, September 8, 2026 at 08:17 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 12, 2019 to Aug 28, 2026Model Insight
Volatility shocks decay with a half-life of 46 trading days, meaning a shock loses half its impact after approximately 46 days.
σ
MF2-GARCH Model
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Shock decay: Shocks decay with a 46-day half-life
| Param | Value | t-stat |
|---|---|---|
| αARCH | 0.1530 | 3.61*** |
| βGARCH | 0.8693 | 39.72*** |
| γleverage | -0.0747 | -0.76 |
| λ₁tau intercept | 16.2958 | 2.32** |
0.985
Persistence46d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
α ARCH Response to squared shocks | 0.1530 | 3.61*** |
β GARCH Volatility persistence | 0.8693 | 39.72*** |
γ leverage Additional response to negative shocks | -0.0747 | -0.76 |
λ₁ tau intercept Baseline long-term coefficient | 16.2958 | 2.32** |
Persistence:
0.985
Half-life:
46 days
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