V-Lab
Sofina SA EGARCH Volatility Analysis
Volatility prediction for Monday, August 17th, 2026
1 Day
21.56%
decreased by 0.27%
1 Week
21.78%
decreased by 0.05%
1 Month
22.66%
increased by 0.83%
Analysis last updated: Saturday, August 15, 2026 at 06:14 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 12, 2018 to Aug 14, 2026Model Insight
The leverage effect is captured by the negative gamma (gamma = -0.0491), confirming that negative shocks increase volatility more than positive shocks of equal magnitude.
σ
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0172 | 2.56** |
α ARCH Response to squared shocks | 0.0425 | 6.28*** |
β GARCH Volatility persistence | 0.9890 | 333.80*** |
γ leverage Additional response to negative shocks | -0.0491 | -6.91*** |
Persistence:
0.989
Half-life:
63 days
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