V-Lab
Gvs S P A EGARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
30.48%
increased by 2.33%
1 Week
31.79%
increased by 3.64%
1 Month
36.10%
increased by 7.95%
Analysis last updated: Friday, September 11, 2026 at 07:54 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 19, 2020 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 14 trading days, meaning a shock loses half its impact after approximately 14 days.
σ
EGARCH Model
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Shock decay: Shocks decay with a 14-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1063 | 1.96* |
| αARCH | 0.1593 | 3.83*** |
| βGARCH | 0.9516 | 37.59*** |
| γleverage | -0.0465 | -1.39 |
0.952
Persistence14d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1063 | 1.96* |
α ARCH Response to squared shocks | 0.1593 | 3.83*** |
β GARCH Volatility persistence | 0.9516 | 37.59*** |
γ leverage Additional response to negative shocks | -0.0465 | -1.39 |
Persistence:
0.952
Half-life:
14 days
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