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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%

decreased by 1.90%

1 Week

84.05%

decreased by 1.67%

1 Month

84.97%

decreased by 0.75%

Analysis last updated: Wednesday, August 19, 2026 at 09:28 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of PowerBank Corp AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Apr 8, 2024 to Aug 14, 2026

Model 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

μ

AMEM Model

Tap to view equation

ParameterValuet-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