V-Lab
Jason Co Ltd EGARCH Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
20.46%
decreased by 0.28%
1 Week
21.87%
increased by 1.13%
1 Month
27.82%
increased by 7.08%
Analysis last updated: Tuesday, September 8, 2026 at 08:58 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 26, 2007 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 26 trading days, meaning a shock loses half its impact after approximately 26 days.
σ
EGARCH Model
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Shock decay: Shocks decay with a 26-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0798 | 4.07*** |
| αARCH | 0.2191 | 7.38*** |
| βGARCH | 0.9738 | 131.34*** |
| γleverage | 0.0691 | 1.75* |
0.974
Persistence26d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0798 | 4.07*** |
α ARCH Response to squared shocks | 0.2191 | 7.38*** |
β GARCH Volatility persistence | 0.9738 | 131.34*** |
γ leverage Additional response to negative shocks | 0.0691 | 1.75* |
Persistence:
0.974
Half-life:
26 days
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