V-Lab
Strong H Machinery Technology Cayman Inc GJR-GARCH Volatility Analysis
Volatility prediction for Friday, August 14th, 2026
1 Day
20.73%
decreased by 0.51%
1 Week
20.85%
decreased by 0.39%
1 Month
21.32%
increased by 0.08%
Analysis last updated: Friday, August 14, 2026 at 08:26 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 9, 2016 to Aug 7, 2026Model Insight
With persistence 0.991, volatility shocks have a half-life of 79 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0253 | 7.90*** |
α ARCH Response to squared shocks | 0.0581 | 9.69*** |
β GARCH Volatility persistence | 0.9254 | 187.86*** |
γ leverage Additional response to negative shocks | 0.0155 | 1.21 |
Persistence:
0.991
Half-life:
79 days
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