V-Lab
PowerBank Corp Asy. MEM Volatility Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Volatility prediction for Thursday, August 20th, 2026
1 Day
83.82%
1 Week
84.05%
1 Month
84.97%
Analysis last updated: Wednesday, August 19, 2026 at 09:28 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 8, 2024 to Aug 14, 2026Model Insight
With persistence 1.000, volatility shocks have a half-life of 1386294 trading days (~5501.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Inverse leverage: Positive returns increase volatility 45% more than negative returns
AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0767 | 8.14*** |
α ARCH Response to squared shocks | 0.2819 | 15.61*** |
β GARCH Volatility persistence | 0.7616 | 61.59*** |
γ leverage Additional response to negative shocks | -0.0872 | -3.79*** |
Persistence:
1.000
Half-life:
1386294 days
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