V-Lab
E.ON SE GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
21.47%
increased by 2.46%
1 Week
21.62%
increased by 2.61%
1 Month
22.19%
increased by 3.18%
Analysis last updated: Saturday, September 19, 2026 at 08:40 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 67 trading days, meaning a shock loses half its impact after approximately 67 days. Returns follow a Student-t distribution with v = 5.70 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
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Shock decay: Shocks decay with a 67-day half-lifev = 5.70 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωconst | 3.1279 | 1.12 |
| αARCH | 0.0733 | 8.67*** |
| βGARCH | 0.9897 | 101.32*** |
| νDF | 5.7010 | 2.05** |
0.990
Persistence67d
Half-life𝑓
GAS-GARCH-T Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.1279 | 1.12 |
α ARCH Response to squared shocks | 0.0733 | 8.67*** |
β GARCH Volatility persistence | 0.9897 | 101.32*** |
ν DF Student-t tail thickness | 5.7010 | 2.05** |
Persistence:
0.990
Half-life:
67 days
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