Euro GAS-GARCH Student T Volatility Analysis
Volatility prediction for Friday, October 30th, 2026
1 Day
4.30%
1 Week
4.32%
1 Month
4.41%
Analysis last updated: Thursday, October 29, 2026 at 07:09 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Oct 23, 2026Model Insight
With persistence 0.999, volatility shocks have a half-life of 569 trading days (~2.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 4.73 degrees of freedom, capturing fatter tails than a normal distribution.
GAS-GARCH-T Model
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| Param | Value | t-stat |
|---|---|---|
| ωlong-run | 0.4055 | 1.95* |
| αscore | 0.0272 | 17.07*** |
| βpersistence | 0.9988 | 1,789.93*** |
| νDF | 4.7295 | 8.57*** |
0.999
Persistence569d
Half-lifeGAS-GARCH-T Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω long-run Long-run variance given a price move | 0.4055 | 1.95* |
α score Weight on the scaled score | 0.0272 | 17.07*** |
β persistence Volatility persistence | 0.9988 | 1,789.93*** |
ν DF Student-t tail thickness | 4.7295 | 8.57*** |
Persistence:
0.999
Half-life:
569 days
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