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V-Lab

China Yangtze Power Co Ltd GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, August 5th, 2026

1 Day

22.33%

increased by 0.84%

1 Week

22.32%

increased by 0.83%

1 Month

22.25%

increased by 0.76%

Analysis last updated: Wednesday, August 5, 2026 at 06:11 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of China Yangtze Power Co Ltd GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 18, 2003 to Jul 31, 2026

Model Insight

With persistence 0.993, volatility shocks have a half-life of 100 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Inverse leverage: Positive returns increase volatility 65% more than negative returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0122
12.16***
α

ARCH

Response to squared shocks

0.0550
16.74***
β

GARCH

Volatility persistence

0.9489
593.83***
γ

leverage

Additional response to negative shocks

-0.0217
-4.55***

Persistence:

0.993

Half-life:

100 days