V-Lab
COMSYS Holdings Corp Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
22.39%
increased by 0.18%
1 Week
22.50%
increased by 0.29%
1 Month
22.76%
increased by 0.55%
Analysis last updated: Sunday, July 26, 2026 at 02:20 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 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 8 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3961 | 5.44*** |
α ARCH Response to squared shocks | 0.1198 | 7.67*** |
β GARCH Volatility persistence | 0.7957 | 31.02*** |
Spline Coefficients
K=8
| γ1 | -0.0511 | -1.61 |
| γ2 | 0.1335 | 2.98*** |
| γ3 | -0.1460 | -5.34*** |
| γ4 | 0.0854 | 3.57*** |
| γ5 | -0.0312 | -1.36 |
| γ6 | 0.0148 | 0.60 |
| γ7 | -0.0060 | -0.26 |
| γ8 | 0.0051 | 0.30 |
Persistence:
0.916
Half-life:
8 days
Other COMSYS Holdings Corp Analyses
Other Zero Slope Spline-GARCH Analyses on International Equities