V-Lab
G K P Printing & Packaging Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
38.90%
increased by 14.53%
1 Week
33.83%
increased by 9.46%
1 Month
29.03%
increased by 4.66%
Analysis last updated: Friday, September 11, 2026 at 07:24 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 8, 2019 to Sep 4, 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
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.9372 | 2.39** |
| αARCH | 0.2160 | 5.18*** |
| βGARCH | 0.4608 | 5.02*** |
Spline Coefficients
K=10
| γ1 | -0.4108 | -0.15 |
| γ2 | 1.9092 | 0.45 |
| γ3 | -3.6227 | -1.11 |
| γ4 | 4.9579 | 2.03** |
| γ5 | -6.4973 | -3.32*** |
| γ6 | 6.8744 | 3.03*** |
| γ7 | -5.4497 | -1.58 |
| γ8 | 5.0812 | 1.38 |
| γ9 | -5.4648 | -2.37** |
| γ10 | 3.5962 | 3.22*** |
0.677
Persistence2d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.9372 | 2.39** |
α ARCH Response to squared shocks | 0.2160 | 5.18*** |
β GARCH Volatility persistence | 0.4608 | 5.02*** |
Spline Coefficients
K=10
| γ1 | -0.4108 | -0.15 |
| γ2 | 1.9092 | 0.45 |
| γ3 | -3.6227 | -1.11 |
| γ4 | 4.9579 | 2.03** |
| γ5 | -6.4973 | -3.32*** |
| γ6 | 6.8744 | 3.03*** |
| γ7 | -5.4497 | -1.58 |
| γ8 | 5.0812 | 1.38 |
| γ9 | -5.4648 | -2.37** |
| γ10 | 3.5962 | 3.22*** |
Persistence:
0.677
Half-life:
2 days
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