V-Lab
COMSYS Holdings Corp Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
22.13%
decreased by 1.54%
1 Week
22.27%
decreased by 1.40%
1 Month
22.57%
decreased by 1.10%
Analysis last updated: Saturday, August 22, 2026 at 10:26 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 to Aug 21, 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 8 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3810 | 5.41*** |
α ARCH Response to squared shocks | 0.1205 | 7.67*** |
β GARCH Volatility persistence | 0.7933 | 30.50*** |
Spline Coefficients
K=8
| γ1 | -0.0518 | -1.65* |
| γ2 | 0.1338 | 3.01*** |
| γ3 | -0.1454 | -5.37*** |
| γ4 | 0.0851 | 3.57*** |
| γ5 | -0.0310 | -1.37 |
| γ6 | 0.0144 | 0.60 |
| γ7 | -0.0056 | -0.25 |
| γ8 | 0.0050 | 0.30 |
Persistence:
0.914
Half-life:
8 days
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