V-Lab
Strong H Machinery Technology Cayman Inc GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, August 25th, 2026
1 Day
19.91%
decreased by 0.55%
1 Week
20.06%
decreased by 0.40%
1 Month
20.59%
increased by 0.13%
Analysis last updated: Tuesday, August 25, 2026 at 08:22 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 9, 2016 to Aug 21, 2026Model Insight
With persistence 0.991, volatility shocks have a half-life of 76 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 | 0.0258 | 7.98*** |
α ARCH Response to squared shocks | 0.0589 | 9.83*** |
β GARCH Volatility persistence | 0.9244 | 186.37*** |
γ leverage Additional response to negative shocks | 0.0153 | 1.20 |
Persistence:
0.991
Half-life:
76 days
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