V-Lab
Hevol Services Group Co Ltd Asy. MEM Volatility Analysis
Volatility prediction for Thursday, September 3rd, 2026
1 Day
30.54%
increased by 2.85%
1 Week
33.03%
increased by 5.34%
1 Month
38.59%
increased by 10.90%
Analysis last updated: Thursday, September 3, 2026 at 06:47 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 9 trading days, meaning a shock loses half its impact after approximately 9 days.
μ
AMEM Model
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Shock decay: Shocks decay with a 9-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.6167 | 2.28** |
| αARCH | 0.3563 | 3.31*** |
| βGARCH | 0.6820 | 12.41*** |
| γleverage | -0.2267 | -1.84* |
0.925
Persistence9d
Half-lifeμ
AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.6167 | 2.28** |
α ARCH Response to squared shocks | 0.3563 | 3.31*** |
β GARCH Volatility persistence | 0.6820 | 12.41*** |
γ leverage Additional response to negative shocks | -0.2267 | -1.84* |
Persistence:
0.925
Half-life:
9 days
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