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%
1 Week
104.85%
1 Month
105.28%
Analysis last updated: Wednesday, August 5, 2026 at 06:42 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 16, 2000 to Jul 31, 2026Model 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
APMEM Model
Tap to view equation
| Parameter | Value | t-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
Other Softbank Group Corp Analyses
Other Asy. Power MEM Analyses on International Equities