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V-Lab

Jiawei Renewable Energy Co Ltd Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

70.19%

decreased by 3.76%

1 Week

69.71%

decreased by 4.24%

1 Month

68.14%

decreased by 5.81%

Analysis last updated: Saturday, August 22, 2026 at 07:12 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Jiawei Renewable Energy Co Ltd S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 11, 2012 to Aug 21, 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 20 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.9865
10.39***
α

ARCH

Response to squared shocks

0.0916
5.17***
β

GARCH

Volatility persistence

0.8736
32.48***
γi Spline Coefficients
K=1
γ1-0.0007
-0.51

Persistence:

0.965

Half-life:

20 days