Fresenius SE & Co KGaA GAS-GARCH Student T Volatility Analysis
Volatility prediction for Thursday, October 22nd, 2026
1 Day
27.72%
increased by 0.04%
1 Week
27.81%
increased by 0.13%
1 Month
28.14%
increased by 0.46%
Analysis last updated: Thursday, October 22, 2026 at 06:41 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 7, 1992 to Oct 16, 2026Model Insight
Volatility shocks decay with a half-life of 46 trading days, meaning a shock loses half its impact after approximately 46 days. Returns follow a Student-t distribution with v = 4.63 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 46-day half-lifev = 4.63 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωlong-run | 3.7288 | 1.27 |
| αscore | 0.0598 | 6.37*** |
| βpersistence | 0.9851 | 80.52*** |
| νDF | 4.6301 | 2.05** |
0.985
Persistence46d
Half-life𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω long-run Long-run variance given a price move | 3.7288 | 1.27 |
α score Weight on the scaled score | 0.0598 | 6.37*** |
β persistence Volatility persistence | 0.9851 | 80.52*** |
ν DF Student-t tail thickness | 4.6301 | 2.05** |
Persistence:
0.985
Half-life:
46 days
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