Jiawei Renewable Energy Co Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, July 14th, 2026
1 Day
55.58%
increased by 5.38%
1 Week
55.57%
increased by 5.37%
1 Month
55.54%
increased by 5.34%
Analysis last updated: Tuesday, July 14, 2026 at 06:22 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
May 11, 2012 to Jul 10, 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 17 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8023 | 6.68*** |
α ARCH Response to squared shocks | 0.0905 | 4.80*** |
β GARCH Volatility persistence | 0.8686 | 28.43*** |
Spline Coefficients
K=2
| γ1 | -0.0253 | -2.03** |
| γ2 | 0.0315 | 1.97** |
Persistence:
0.959
Half-life:
17 days
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