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V-Lab
V-Lab

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

Volatility prediction for Tuesday, September 8th, 2026

1 Day

57.35%

decreased by 1.39%

1 Week

63.15%

increased by 4.41%

1 Month

74.42%

increased by 15.68%

Analysis last updated: Tuesday, September 8, 2026 at 07:52 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

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

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

This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 7 trading days.

τ

Spline-GARCH Model

Tap to view equation

Time-varying baseline: volatility reverts to a slowly-shifting spline trend
ParamValuet-stat
ωconst1.2655
7.25***
αARCH0.1758
5.18***
βGARCH0.7269
16.21***
γi Spline Coefficients
K=1
γ10.0367
2.68***

0.903

Persistence

7d

Half-life
τ

Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.2655
7.25***
α

ARCH

Response to squared shocks

0.1758
5.18***
β

GARCH

Volatility persistence

0.7269
16.21***
γi Spline Coefficients
K=1
γ10.0367
2.68***

Persistence:

0.903

Half-life:

7 days