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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Tadawul All Share TASI Index MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 19, 1998 to Sep 16, 2026

Model 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
ParamValuet-stat
mwindow126
αARCH0.0985
5.48***
βGARCH0.7914
51.30***
γleverage0.1749
6.19***
λ₁tau intercept0.0057
0.66
λ₂forecast adj.0.0069
0.87
λ₃tau persistence0.9910
89.78***

0.977

Persistence

30d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-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