V-Lab
African Rainbow Minerals Ltd GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, October 7th, 2026
1 Day
52.72%
decreased by 0.30%
1 Week
52.91%
decreased by 0.11%
1 Month
53.65%
increased by 0.63%
Analysis last updated: Wednesday, October 7, 2026 at 06:38 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 24, 2006 to Oct 2, 2026Model Insight
With persistence 0.996, volatility shocks have a half-life of 178 trading days (~0.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
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High persistence: persistence 0.996, shock half-life ~178 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0832 | 2.34** |
| αARCH | 0.0316 | 2.83*** |
| βGARCH | 0.9453 | 134.06*** |
| γleverage | 0.0384 | 1.61 |
0.996
Persistence178d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0832 | 2.34** |
α ARCH Response to squared shocks | 0.0316 | 2.83*** |
β GARCH Volatility persistence | 0.9453 | 134.06*** |
γ leverage Additional response to negative shocks | 0.0384 | 1.61 |
Persistence:
0.996
Half-life:
178 days
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