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V-Lab
V-Lab

Inpex Corp GJR-GARCH Volatility Analysis

Volatility prediction for Thursday, September 24th, 2026

1 Day

34.53%

decreased by 1.40%

1 Week

34.77%

decreased by 1.16%

1 Month

35.61%

decreased by 0.32%

Analysis last updated: Saturday, September 19, 2026 at 11:59 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Inpex Corp GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 17, 2004 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 29 trading days, meaning a shock loses half its impact after approximately 29 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 29-day half-life
ParamValuet-stat
ωconst0.1484
3.62***
αARCH0.0601
4.08***
βGARCH0.8909
48.65***
γleverage0.0500
1.65*

0.976

Persistence

29d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1484
3.62***
α

ARCH

Response to squared shocks

0.0601
4.08***
β

GARCH

Volatility persistence

0.8909
48.65***
γ

leverage

Additional response to negative shocks

0.0500
1.65*

Persistence:

0.976

Half-life:

29 days