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V-Lab

Softbank Group Corp MEM Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

64.40%

increased by 2.14%

1 Week

64.58%

increased by 2.32%

1 Month

65.29%

increased by 3.03%

Analysis last updated: Friday, September 11, 2026 at 06:56 PM UTC

Date Range:

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to

6M ·

1Y ·

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graph of Softbank Group Corp MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 16, 2000 to Sep 4, 2026

Model Insight

With persistence 1.000, volatility shocks have a half-life of 1487 trading days (~5.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

MEM Model

Tap to view equation

High persistence: persistence 1.000, shock half-life ~1487 days
ParamValuet-stat
ωconst0.0536
2.08**
αARCH0.0927
7.49***
βGARCH0.9068
48.02***

1.000

Persistence

1487d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0536
2.08**
α

ARCH

Response to squared shocks

0.0927
7.49***
β

GARCH

Volatility persistence

0.9068
48.02***

Persistence:

1.000

Half-life:

1487 days