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Straits Times Index STI GJR-GARCH Volatility Analysis

Volatility prediction for Friday, November 6th, 2026

1 Day

12.63%

decreased by 0.53%

1 Week

12.93%

decreased by 0.23%

1 Month

13.94%

increased by 0.78%

Analysis last updated: Thursday, November 5, 2026 at 10:11 AM UTC

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Date Range:

from

11/05/2024

to

11/05/2026

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 30, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 151% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 151% more than positive returns
ParamValuet-stat
ωconst0.0259
6.83***
αARCH0.0736
5.73***
βGARCH0.8542
74.39***
γleverage0.1111
3.78***

0.983

Persistence

41d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0259
6.83***
α

ARCH

Response to squared shocks

0.0736
5.73***
β

GARCH

Volatility persistence

0.8542
74.39***
γ

leverage

Additional response to negative shocks

0.1111
3.78***

Persistence:

0.983

Half-life:

41 days