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African Rainbow Minerals Ltd GAS-GARCH Student T Volatility Analysis

Volatility prediction for Wednesday, October 7th, 2026

1 Day

57.52%

increased by 1.12%

1 Week

57.51%

increased by 1.11%

1 Month

57.49%

increased by 1.09%

Analysis last updated: Wednesday, October 7, 2026 at 06:38 PM UTC

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Date Range:

from

10/06/2024

to

10/06/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of African Rainbow Minerals Ltd GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 24, 2006 to Oct 2, 2026

Model Insight

With persistence 0.991, volatility shocks have a half-life of 79 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 4.96 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.991, shock half-life ~79 daysv = 4.96 · fat tails
ParamValuet-stat
ωconst12.9676
1.31
αARCH0.0481
7.24***
βGARCH0.9913
166.85***
νDF4.9647
2.17**

0.991

Persistence

79d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

12.9676
1.31
α

ARCH

Response to squared shocks

0.0481
7.24***
β

GARCH

Volatility persistence

0.9913
166.85***
ν

DF

Student-t tail thickness

4.9647
2.17**

Persistence:

0.991

Half-life:

79 days