V-Lab
Chinyang Poly Urethane Co Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
51.47%
decreased by 6.13%
1 Week
53.54%
decreased by 4.06%
1 Month
57.38%
decreased by 0.22%
Analysis last updated: Friday, September 11, 2026 at 08:29 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 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 5 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 | 0.7568 | 7.00*** |
| αARCH | 0.2144 | 8.50*** |
| βGARCH | 0.6649 | 18.42*** |
Spline Coefficients
K=10
| γ1 | -0.0290 | -0.63 |
| γ2 | 0.0938 | 1.38 |
| γ3 | -0.2182 | -4.26*** |
| γ4 | 0.2342 | 3.79*** |
| γ5 | -0.0038 | -0.06 |
| γ6 | -0.2626 | -4.43*** |
| γ7 | 0.3773 | 7.15*** |
| γ8 | -0.2602 | -4.53*** |
| γ9 | 0.0616 | 0.91 |
| γ10 | 0.0067 | 0.13 |
0.879
Persistence5d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7568 | 7.00*** |
α ARCH Response to squared shocks | 0.2144 | 8.50*** |
β GARCH Volatility persistence | 0.6649 | 18.42*** |
Spline Coefficients
K=10
| γ1 | -0.0290 | -0.63 |
| γ2 | 0.0938 | 1.38 |
| γ3 | -0.2182 | -4.26*** |
| γ4 | 0.2342 | 3.79*** |
| γ5 | -0.0038 | -0.06 |
| γ6 | -0.2626 | -4.43*** |
| γ7 | 0.3773 | 7.15*** |
| γ8 | -0.2602 | -4.53*** |
| γ9 | 0.0616 | 0.91 |
| γ10 | 0.0067 | 0.13 |
Persistence:
0.879
Half-life:
5 days
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