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
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 16, 2000 to Jul 31, 2026Model 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
| Parameter | Value | t-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*** |
Spline Coefficients
K=3
| γ1 | 0.0109 | 2.25** |
| γ2 | -0.0003 | -0.05 |
| γ3 | -0.0152 | -3.31*** |
Persistence:
0.940
Half-life:
11 days
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