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V-Lab

Fresenius SE & Co KGaA GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

22.51%

decreased by 0.84%

1 Week

22.79%

decreased by 0.56%

1 Month

23.76%

increased by 0.41%

Analysis last updated: Saturday, September 19, 2026 at 08:58 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Fresenius SE & Co KGaA GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 7, 1992 to Sep 18, 2026

Model 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

Tap to view equation

Shock decay: Shocks decay with a 46-day half-lifev = 4.63 · fat tails
ParamValuet-stat
ωconst3.7130
1.27
αARCH0.0598
6.39***
βGARCH0.9852
80.63***
νDF4.6322
2.05**

0.985

Persistence

46d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

3.7130
1.27
α

ARCH

Response to squared shocks

0.0598
6.39***
β

GARCH

Volatility persistence

0.9852
80.63***
ν

DF

Student-t tail thickness

4.6322
2.05**

Persistence:

0.985

Half-life:

46 days