V-Lab
Zhejiang Walrus New Material Co Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
32.69%
decreased by 0.95%
1 Week
34.22%
increased by 0.58%
1 Month
37.51%
increased by 3.87%
Analysis last updated: Saturday, September 19, 2026 at 07:11 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 8, 2020 to Sep 18, 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 7 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 | 1.1932 | 8.77*** |
| αARCH | 0.1048 | 3.89*** |
| βGARCH | 0.8052 | 15.50*** |
Spline Coefficients
K=1
| γ1 | 0.0128 | 1.74* |
0.910
Persistence7d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1932 | 8.77*** |
α ARCH Response to squared shocks | 0.1048 | 3.89*** |
β GARCH Volatility persistence | 0.8052 | 15.50*** |
Spline Coefficients
K=1
| γ1 | 0.0128 | 1.74* |
Persistence:
0.910
Half-life:
7 days
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