V-Lab
Yw Co Ltd EGARCH Volatility Analysis
Volatility prediction for Wednesday, September 9th, 2026
1 Day
27.98%
increased by 1.10%
1 Week
29.05%
increased by 2.17%
1 Month
33.34%
increased by 6.46%
Analysis last updated: Wednesday, September 9, 2026 at 08:07 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 11, 2003 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 35 trading days, meaning a shock loses half its impact after approximately 35 days.
σ
EGARCH Model
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Shock decay: Shocks decay with a 35-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0600 | 5.42*** |
| αARCH | 0.2266 | 10.13*** |
| βGARCH | 0.9802 | 215.82*** |
| γleverage | 0.0176 | 0.75 |
0.980
Persistence35d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0600 | 5.42*** |
α ARCH Response to squared shocks | 0.2266 | 10.13*** |
β GARCH Volatility persistence | 0.9802 | 215.82*** |
γ leverage Additional response to negative shocks | 0.0176 | 0.75 |
Persistence:
0.980
Half-life:
35 days
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