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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Hangzhou Prevail Optoelectronic Equipment Co., Ltd. AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 2, 2017 to Aug 28, 2026

Model 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

ParameterValuet-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