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Vinacomin Vang Danh Coal GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

26.23%

decreased by 0.49%

1 Week

26.88%

increased by 0.16%

1 Month

29.20%

increased by 2.48%

Analysis last updated: Friday, September 11, 2026 at 09:38 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 Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 67 trading days, meaning a shock loses half its impact after approximately 67 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 67-day half-life
ParamValuet-stat
ωconst0.0978
3.41***
αARCH0.0780
3.43***
βGARCH0.9292
87.85***
γleverage-0.0348
-1.10

0.990

Persistence

67d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0978
3.41***
α

ARCH

Response to squared shocks

0.0780
3.43***
β

GARCH

Volatility persistence

0.9292
87.85***
γ

leverage

Additional response to negative shocks

-0.0348
-1.10

Persistence:

0.990

Half-life:

67 days