V-Lab
Jiawei Renewable Energy Co Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
70.19%
decreased by 3.76%
1 Week
69.71%
decreased by 4.24%
1 Month
68.14%
decreased by 5.81%
Analysis last updated: Saturday, August 22, 2026 at 07:12 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 11, 2012 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 20 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9865 | 10.39*** |
α ARCH Response to squared shocks | 0.0916 | 5.17*** |
β GARCH Volatility persistence | 0.8736 | 32.48*** |
Spline Coefficients
K=1
| γ1 | -0.0007 | -0.51 |
Persistence:
0.965
Half-life:
20 days
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