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V-Lab

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

Volatility prediction for Monday, July 27th, 2026

1 Day

55.50%

decreased by 4.43%

1 Week

55.99%

decreased by 3.94%

1 Month

57.24%

decreased by 2.69%

Analysis last updated: Saturday, July 25, 2026 at 11:30 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 Jul 24, 2026

Model Insight

This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 33% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.9707
16.79***
α

ARCH

Response to squared shocks

0.1748
13.64***
β

GARCH

Volatility persistence

0.7770
89.92***
γ

leverage

Additional response to negative shocks

-0.0432
-2.03**

Persistence:

0.930

Half-life:

10 days