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V-Lab

Hangzhou Prevail Optoelectronic Equipment Co., Ltd. GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

42.87%

increased by 1.15%

1 Week

45.97%

increased by 4.25%

1 Month

52.51%

increased by 10.79%

Analysis last updated: Friday, September 11, 2026 at 06:53 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Hangzhou Prevail Optoelectronic Equipment Co., Ltd. GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 19, 2017 to Sep 4, 2026

Model 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

Shock decay: Shocks decay with a 8-day half-life
ParamValuet-stat
ωconst1.2394
4.12***
αARCH0.1847
3.59***
βGARCH0.7376
16.40***
γleverage-0.0207
-0.23

0.912

Persistence

8d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.2394
4.12***
α

ARCH

Response to squared shocks

0.1847
3.59***
β

GARCH

Volatility persistence

0.7376
16.40***
γ

leverage

Additional response to negative shocks

-0.0207
-0.23

Persistence:

0.912

Half-life:

8 days