V-Lab
Hangzhou Prevail Optoelectronic Equipment Co., Ltd. GJR-GARCH Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
117.06%
decreased by 16.37%
1 Week
110.55%
decreased by 22.88%
1 Month
92.75%
decreased by 40.68%
Analysis last updated: Saturday, August 22, 2026 at 07:58 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 19, 2017 to Aug 21, 2026Model Insight
Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1540 | 16.17*** |
α ARCH Response to squared shocks | 0.1843 | 14.15*** |
β GARCH Volatility persistence | 0.7489 | 69.57*** |
γ leverage Additional response to negative shocks | -0.0259 | -1.13 |
Persistence:
0.920
Half-life:
8 days
Other Hangzhou Prevail Optoelectronic Equipment Co., Ltd. Analyses
Other GJR-GARCH Analyses on International Equities