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Ghana Stock Exchange Composite Index GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, September 18th, 2026

1 Day

181.69%

decreased by 3.40%

1 Week

181.33%

decreased by 3.76%

1 Month

179.99%

decreased by 5.10%

Analysis last updated: Friday, September 18, 2026 at 10:10 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Ghana Stock Exchange Composite Index GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 4, 2011 to Sep 10, 2026

Model Insight

The estimated Student-t degrees of freedom v = 2.01 sit at the infinite-variance boundary (v → 2): the model is attributing extreme moves to heavy tails rather than to volatility, so the volatility scale is unreliable here. See the boundary-parameters flag.

𝑓

GAS-GARCH-T Model

Tap to view equation

Unreliable tails: v = 2.01 sits at the infinite-variance boundary
ParamValuet-stat
ωconst106.8667
0.81
αARCH0.1534
33.17***
βGARCH0.9892
75.15***
νDF2.0051
3,006.17***

0.989

Persistence

64d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

106.8667
0.81
α

ARCH

Response to squared shocks

0.1534
33.17***
β

GARCH

Volatility persistence

0.9892
75.15***
ν

DF

Student-t tail thickness

2.0051
3,006.17***

Persistence:

0.989

Half-life:

64 days