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V-Lab

Powerhouse Energy Group PLC AGARCH Volatility Analysis

Volatility prediction for Tuesday, July 14th, 2026

1 Day

65.41%

decreased by 2.19%

1 Week

69.32%

increased by 1.72%

1 Month

82.41%

increased by 14.81%

Analysis last updated: Tuesday, July 14, 2026 at 08:19 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of Powerhouse Energy Group PLC AGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 16, 2007 to Jul 10, 2026

Model Insight

With persistence 0.991, volatility shocks have a half-life of 78 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: negative returns raise volatility more

σ

AGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0057
7.22***
α

ARCH

Response to squared shocks

0.1213
28.51***
β

GARCH

Volatility persistence

0.8699
234.04***
γ

leverage

Additional response to negative shocks

1.2759
4.30***

Persistence:

0.991

Half-life:

78 days