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V-Lab

Ghana Stock Exchange Composite Index AGARCH Volatility Analysis

Volatility prediction for Friday, September 4th, 2026

1 Day

11.41%

increased by 2.11%

1 Week

11.53%

increased by 2.23%

1 Month

11.81%

increased by 2.51%

Analysis last updated: Friday, September 4, 2026 at 11:28 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Ghana Stock Exchange Composite Index AGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 4, 2011 to Aug 27, 2026

Model Insight

Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.

σ

AGARCH Model

Tap to view equation

Shock decay: Shocks decay with a 8-day half-life
ParamValuet-stat
ωconst0.0442
2.87***
αARCH0.1273
4.85***
βGARCH0.7912
17.60***
γleverage-0.1709
-1.88*

0.918

Persistence

8d

Half-life
σ

AGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0442
2.87***
α

ARCH

Response to squared shocks

0.1273
4.85***
β

GARCH

Volatility persistence

0.7912
17.60***
γ

leverage

Additional response to negative shocks

-0.1709
-1.88*

Persistence:

0.918

Half-life:

8 days