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V-Lab

Vinacomin Vang Danh Coal GJR-GARCH Volatility Analysis

Volatility prediction for Friday, July 24th, 2026

1 Day

27.07%

decreased by 0.25%

1 Week

27.71%

increased by 0.39%

1 Month

29.98%

increased by 2.66%

Analysis last updated: Friday, July 24, 2026 at 08:31 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Vinacomin Vang Danh Coal GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 10, 2011 to Jul 17, 2026

Model Insight

This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 79% 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

0.1011
13.53***
α

ARCH

Response to squared shocks

0.0788
13.62***
β

GARCH

Volatility persistence

0.9280
345.63***
γ

leverage

Additional response to negative shocks

-0.0348
-4.29***

Persistence:

0.989

Half-life:

65 days