V-Lab
Fresenius SE & Co KGaA GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
22.38%
decreased by 0.26%
1 Week
22.66%
increased by 0.02%
1 Month
23.67%
increased by 1.03%
Analysis last updated: Saturday, August 22, 2026 at 08:39 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 7, 1992 to Aug 21, 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 = 4.62 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.7219 | 5.07*** |
α ARCH Response to squared shocks | 0.0599 | 25.50*** |
β GARCH Volatility persistence | 0.9851 | 320.79*** |
ν DF Student-t tail thickness | 4.6244 | 8.22*** |
Persistence:
0.985
Half-life:
46 days
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