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

Volatility prediction for Friday, September 25th, 2026

1 Day

203.82%

increased by 8.29%

1 Week

204.68%

increased by 9.15%

1 Month

207.88%

increased by 12.35%

Analysis last updated: Friday, September 25, 2026 at 09:06 PM UTC

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Date Range:

from

09/24/2024

to

09/24/2026

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 24, 2026
Extended Optimization

Model Insight

The estimated Student-t degrees of freedom v = 2.00 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 = 2.00 sits at the infinite-variance boundary
ParamValuet-stat
ωconst241.3621
0.92
αARCH0.1538
35.34***
βGARCH0.9908
102.59***
νDF2.0026
7,126.76***

0.991

Persistence

75d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

241.3621
0.92
α

ARCH

Response to squared shocks

0.1538
35.34***
β

GARCH

Volatility persistence

0.9908
102.59***
ν

DF

Student-t tail thickness

2.0026
7,126.76***

Persistence:

0.991

Half-life:

75 days