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Ardagh Metal Packaging S A GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, September 22nd, 2026

1 Day

54.10%

increased by 5.58%

1 Week

59.58%

increased by 11.06%

1 Month

66.49%

increased by 17.97%

Analysis last updated: Tuesday, September 22, 2026 at 07:13 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Ardagh Metal Packaging S A GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 11, 2021 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 3 trading days, meaning a shock loses half its impact after approximately 3 days. Returns follow a Student-t distribution with v = 3.16 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 3-day half-lifev = 3.16 · fat tails
ParamValuet-stat
ωconst19.5097
1.46
αARCH0.1466
1.87*
βGARCH0.8111
6.53***
νDF3.1552
1.33

0.811

Persistence

3d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

19.5097
1.46
α

ARCH

Response to squared shocks

0.1466
1.87*
β

GARCH

Volatility persistence

0.8111
6.53***
ν

DF

Student-t tail thickness

3.1552
1.33

Persistence:

0.811

Half-life:

3 days