V-Lab
Inpex Corp GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, September 10th, 2026
1 Day
35.13%
decreased by 0.52%
1 Week
35.35%
decreased by 0.30%
1 Month
36.10%
increased by 0.45%
Analysis last updated: Thursday, September 10, 2026 at 07:49 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 17, 2004 to Sep 4, 2026Model 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
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Shock decay: Shocks decay with a 29-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1492 | 3.63*** |
| αARCH | 0.0604 | 4.08*** |
| βGARCH | 0.8904 | 48.48*** |
| γleverage | 0.0504 | 1.66* |
0.976
Persistence29d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1492 | 3.63*** |
α ARCH Response to squared shocks | 0.0604 | 4.08*** |
β GARCH Volatility persistence | 0.8904 | 48.48*** |
γ leverage Additional response to negative shocks | 0.0504 | 1.66* |
Persistence:
0.976
Half-life:
29 days
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