V-Lab
Chinyang Poly Urethane Co Ltd GJR-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
64.99%
decreased by 5.63%
1 Week
65.71%
decreased by 4.91%
1 Month
68.40%
decreased by 2.22%
Analysis last updated: Friday, September 11, 2026 at 08:28 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
With persistence 0.994, volatility shocks have a half-life of 113 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
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High persistence: persistence 0.994, shock half-life ~113 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.2897 | 4.49*** |
| αARCH | 0.1872 | 6.85*** |
| βGARCH | 0.8321 | 51.21*** |
| γleverage | -0.0508 | -1.16 |
0.994
Persistence113d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2897 | 4.49*** |
α ARCH Response to squared shocks | 0.1872 | 6.85*** |
β GARCH Volatility persistence | 0.8321 | 51.21*** |
γ leverage Additional response to negative shocks | -0.0508 | -1.16 |
Persistence:
0.994
Half-life:
113 days
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