V-Lab
Tadawul All Share TASI Index MF2-GARCH Volatility Analysis
Volatility prediction for Saturday, September 19th, 2026
1 Day
13.24%
decreased by 1.11%
1 Week
13.83%
decreased by 0.52%
1 Month
15.69%
increased by 1.34%
Analysis last updated: Thursday, September 17, 2026 at 05:49 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 19, 1998 to Sep 16, 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
Tap to view equation
Leverage: Negative returns increase volatility 178% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| mwindow | 126 | |
| αARCH | 0.0985 | 5.48*** |
| βGARCH | 0.7914 | 51.30*** |
| γleverage | 0.1749 | 6.19*** |
| λ₁tau intercept | 0.0057 | 0.66 |
| λ₂forecast adj. | 0.0069 | 0.87 |
| λ₃tau persistence | 0.9910 | 89.78*** |
0.977
Persistence30d
Half-lifeσ
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 126 | |
α ARCH Response to squared shocks | 0.0985 | 5.48*** |
β GARCH Volatility persistence | 0.7914 | 51.30*** |
γ leverage Additional response to negative shocks | 0.1749 | 6.19*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0057 | 0.66 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0069 | 0.87 |
λ₃ tau persistence Long-term factor persistence | 0.9910 | 89.78*** |
Persistence:
0.977
Half-life:
30 days
Other Tadawul All Share TASI Index Analyses
Other MF2-GARCH Analyses on Equity Indices