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V-Lab

adidas AG GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

29.04%

decreased by 1.21%

1 Week

29.11%

decreased by 1.14%

1 Month

29.38%

decreased by 0.87%

Analysis last updated: Saturday, September 19, 2026 at 08:59 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of adidas AG GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 17, 1995 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 64 trading days, meaning a shock loses half its impact after approximately 64 days. Returns follow a Student-t distribution with v = 4.61 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 64-day half-lifev = 4.61 · fat tails
ParamValuet-stat
ωconst4.1215
0.95
αARCH0.0488
5.89***
βGARCH0.9892
83.79***
νDF4.6089
1.79*

0.989

Persistence

64d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

4.1215
0.95
α

ARCH

Response to squared shocks

0.0488
5.89***
β

GARCH

Volatility persistence

0.9892
83.79***
ν

DF

Student-t tail thickness

4.6089
1.79*

Persistence:

0.989

Half-life:

64 days