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V-Lab

Jakarta Stock Exchange LQ45 Index GJR-GARCH Volatility Analysis

Volatility prediction for Thursday, August 20th, 2026

1 Day

18.39%

decreased by 0.57%

1 Week

18.82%

decreased by 0.14%

1 Month

20.34%

increased by 1.38%

Analysis last updated: Wednesday, August 19, 2026 at 10:02 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Jakarta Stock Exchange LQ45 Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 24, 1997 to Aug 14, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 113% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0460
20.17***
α

ARCH

Response to squared shocks

0.0745
18.96***
β

GARCH

Volatility persistence

0.8729
335.75***
γ

leverage

Additional response to negative shocks

0.0842
11.35***

Persistence:

0.990

Half-life:

66 days