V-Lab
Hangzhou Prevail Optoelectronic Equipment Co., Ltd. Asy. MEM Volatility Analysis
Volatility prediction for Friday, September 4th, 2026
1 Day
56.67%
decreased by 4.13%
1 Week
57.02%
decreased by 3.78%
1 Month
58.11%
decreased by 2.69%
Analysis last updated: Friday, September 4, 2026 at 06:33 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 2, 2017 to Aug 28, 2026Model Insight
Volatility shocks decay with a half-life of 17 trading days, meaning a shock loses half its impact after approximately 17 days.
μ
AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.5931 | 4.85*** |
α ARCH Response to squared shocks | 0.2151 | 4.90*** |
β GARCH Volatility persistence | 0.7397 | 24.69*** |
γ leverage Additional response to negative shocks | 0.0105 | 0.15 |
Persistence:
0.960
Half-life:
17 days
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