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V-Lab

Softbank Group Corp Asy. Power MEM Volatility Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Volatility prediction for Wednesday, August 5th, 2026

1 Day

104.74%

increased by 3.40%

1 Week

104.85%

increased by 3.51%

1 Month

105.28%

increased by 3.94%

Analysis last updated: Wednesday, August 5, 2026 at 06:42 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Softbank Group Corp APMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 16, 2000 to Jul 31, 2026

Model Insight

With persistence 1.000, volatility shocks have a half-life of 1359323 trading days (~5394.1 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 41% more than positive returns

μ

APMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0537
7.46***
α

ARCH

Response to squared shocks

0.0916
15.74***
β

GARCH

Volatility persistence

0.9051
249.13***
γ

leverage

Additional response to negative shocks

0.0826
5.15***
δ

power

Transformation power

2.0763
16.91***

Persistence:

1.000

Half-life:

1359323 days