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V-Lab

S&P/ASX 200 GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 22nd, 2026

1 Day

11.59%

decreased by 0.42%

1 Week

11.72%

decreased by 0.29%

1 Month

12.17%

increased by 0.16%

Analysis last updated: Monday, September 21, 2026 at 07:02 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P/ASX 200 GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 29, 1992 to Sep 18, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

GJR-GARCH Model

Tap to view equation

Leverage: volatility responds almost entirely to negative shocks
ParamValuet-stat
ωconst0.0204
5.53***
αARCH0.0134
1.70*
βGARCH0.8948
106.13***
γleverage0.1312
6.06***

0.974

Persistence

26d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0204
5.53***
α

ARCH

Response to squared shocks

0.0134
1.70*
β

GARCH

Volatility persistence

0.8948
106.13***
γ

leverage

Additional response to negative shocks

0.1312
6.06***

Persistence:

0.974

Half-life:

26 days