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V-Lab

Hangzhou Prevail Optoelectronic Equipment Co., Ltd. MEM Volatility Analysis

Volatility prediction for Monday, August 17th, 2026

1 Day

44.31%

unchanged at 0.00%

1 Week

45.65%

increased by 1.34%

1 Month

49.59%

increased by 5.28%

Analysis last updated: Saturday, August 15, 2026 at 07:44 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

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

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 2, 2017 to Aug 14, 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

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.5530
6.95***
α

ARCH

Response to squared shocks

0.2117
19.59***
β

GARCH

Volatility persistence

0.7493
104.34***

Persistence:

0.961

Half-life:

17 days