V-Lab
BOYD GROUP SERVICES INC Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
34.91%
unchanged at 0.00%
1 Week
34.91%
unchanged at 0.00%
1 Month
34.91%
unchanged at 0.00%
Analysis last updated: Friday, July 24, 2026 at 10:21 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 30, 2025 to Jul 24, 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 2 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.5165 | 1.87* |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.7481 | 0.37 |
Spline Coefficients
K=3
| γ1 | 88.0390 | 3.89*** |
| γ2 | -133.8067 | -4.58*** |
| γ3 | 58.8911 | 4.12*** |
Persistence:
0.748
Half-life:
2 days
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