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V-Lab

Stock Exchange of Thailand SET 50 Index MF2-GARCH Volatility Analysis

Volatility prediction for Friday, September 18th, 2026

1 Day

12.60%

increased by 0.26%

1 Week

12.87%

increased by 0.53%

1 Month

13.71%

increased by 1.37%

Analysis last updated: Friday, September 18, 2026 at 09:54 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Stock Exchange of Thailand SET 50 Index MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 16, 1995 to Sep 10, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 176% more than equivalent positive returns.

σ

MF2-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 176% more than positive returns
ParamValuet-stat
mwindow46
αARCH0.0526
3.18***
βGARCH0.8670
43.73***
γleverage0.0923
3.21***
λ₁tau intercept0.0001
0.12
λ₂forecast adj.0.0047
1.49
λ₃tau persistence0.9952
293.30***

0.966

Persistence

20d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

46
α

ARCH

Response to squared shocks

0.0526
3.18***
β

GARCH

Volatility persistence

0.8670
43.73***
γ

leverage

Additional response to negative shocks

0.0923
3.21***
λ₁

tau intercept

Baseline long-term coefficient

0.0001
0.12
λ₂

forecast adj.

Forecast performance sensitivity

0.0047
1.49
λ₃

tau persistence

Long-term factor persistence

0.9952
293.30***

Persistence:

0.966

Half-life:

20 days