V-Lab
Ardagh Metal Packaging S A GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 22nd, 2026
1 Day
47.09%
increased by 0.63%
1 Week
52.29%
increased by 5.83%
1 Month
58.59%
increased by 12.13%
Analysis last updated: Tuesday, September 22, 2026 at 07:13 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 11, 2021 to Sep 18, 2026Model Insight
Volatility shocks decay with a half-life of 3 trading days, meaning a shock loses half its impact after approximately 3 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 3-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 2.9827 | 3.82*** |
| αARCH | 0.2419 | 2.87*** |
| βGARCH | 0.6317 | 9.50*** |
| γleverage | -0.1413 | -1.13 |
0.803
Persistence3d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.9827 | 3.82*** |
α ARCH Response to squared shocks | 0.2419 | 2.87*** |
β GARCH Volatility persistence | 0.6317 | 9.50*** |
γ leverage Additional response to negative shocks | -0.1413 | -1.13 |
Persistence:
0.803
Half-life:
3 days
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