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V-Lab

Softbank Group Corp Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Wednesday, August 5th, 2026

1 Day

65.45%

increased by 5.60%

1 Week

63.86%

increased by 4.01%

1 Month

59.28%

decreased by 0.57%

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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Softbank Group Corp S0GARCH

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

This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 11 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.3969
9.09***
α

ARCH

Response to squared shocks

0.1202
8.72***
β

GARCH

Volatility persistence

0.8194
43.56***
γi Spline Coefficients
K=3
γ10.0109
2.25**
γ2-0.0003
-0.05
γ3-0.0152
-3.31***

Persistence:

0.940

Half-life:

11 days