Tadawul All Share TASI Index MF2-GARCH Volatility Analysis
Volatility prediction for Saturday, October 31st, 2026
1 Day
28.69%
decreased by 3.26%
1 Week
28.46%
decreased by 3.49%
1 Month
27.71%
decreased by 4.24%
Analysis last updated: Thursday, October 29, 2026 at 08:38 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 19, 1998 to Oct 28, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 178% more than equivalent positive returns.
σ
MF2-GARCH Model
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Leverage: Negative returns increase volatility 178% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| mwindow | 126 | |
| αARCH | 0.0986 | 5.49*** |
| βGARCH | 0.7914 | 51.47*** |
| γleverage | 0.1753 | 6.25*** |
| λ₁tau intercept | 0.0058 | 0.66 |
| λ₂forecast adj. | 0.0069 | 0.87 |
| λ₃tau persistence | 0.9910 | 90.41*** |
0.978
Persistence31d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 126 | |
α ARCH Response to squared shocks | 0.0986 | 5.49*** |
β GARCH Volatility persistence | 0.7914 | 51.47*** |
γ leverage Additional response to negative shocks | 0.1753 | 6.25*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0058 | 0.66 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0069 | 0.87 |
λ₃ tau persistence Long-term factor persistence | 0.9910 | 90.41*** |
Persistence:
0.978
Half-life:
31 days
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