Skip to main content
V-Lab
V-Lab

Straits Times Index STI GJR-GARCH Volatility Analysis

Volatility prediction for Friday, October 16th, 2026

1 Day

19.80%

decreased by 1.26%

1 Week

19.80%

decreased by 1.26%

1 Month

19.82%

decreased by 1.24%

Analysis last updated: Thursday, October 15, 2026 at 10:03 AM UTC

Press Delete or Backspace to remove this series.
Date Range:

from

10/15/2024

to

10/15/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Straits Times Index STI GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Oct 9, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 154% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 154% more than positive returns
ParamValuet-stat
ωconst0.0257
6.80***
αARCH0.0727
5.68***
βGARCH0.8550
74.77***
γleverage0.1120
3.81***

0.984

Persistence

42d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0257
6.80***
α

ARCH

Response to squared shocks

0.0727
5.68***
β

GARCH

Volatility persistence

0.8550
74.77***
γ

leverage

Additional response to negative shocks

0.1120
3.81***

Persistence:

0.984

Half-life:

42 days