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
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 16, 2007 to Jul 10, 2026Model 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
| Parameter | Value | t-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
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