V-Lab
Hangzhou Prevail Optoelectronic Equipment Co., Ltd. GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, October 8th, 2026
1 Day
57.96%
decreased by 2.72%
1 Week
58.23%
decreased by 2.45%
1 Month
58.86%
decreased by 1.82%
Analysis last updated: Thursday, October 1, 2026 at 07:32 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 19, 2017 to Sep 30, 2026Model Insight
Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 7-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2854 | 4.16*** |
| αARCH | 0.1913 | 3.64*** |
| βGARCH | 0.7297 | 15.89*** |
| γleverage | -0.0245 | -0.27 |
0.909
Persistence7d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2854 | 4.16*** |
α ARCH Response to squared shocks | 0.1913 | 3.64*** |
β GARCH Volatility persistence | 0.7297 | 15.89*** |
γ leverage Additional response to negative shocks | -0.0245 | -0.27 |
Persistence:
0.909
Half-life:
7 days
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