V-Lab
Ghana Stock Exchange Composite Index MF2-GARCH Volatility Analysis
Volatility prediction for Friday, September 4th, 2026
1 Day
9.62%
1 Week
9.95%
1 Month
10.65%
Analysis last updated: Friday, September 4, 2026 at 11:28 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 4, 2011 to Aug 27, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 91% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets.
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 81 | |
α ARCH Response to squared shocks | 0.1814 | 4.66*** |
β GARCH Volatility persistence | 0.7142 | 14.62*** |
γ leverage Additional response to negative shocks | -0.0865 | -2.06** |
λ₁ tau intercept Baseline long-term coefficient | 0.2352 | 2.08** |
λ₂ forecast adj. Forecast performance sensitivity | 0.5667 | 2.46** |
λ₃ tau persistence Long-term factor persistence | 0.0000 | 0.00 |
Persistence:
0.852
Half-life:
4 days
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