V-Lab
Saudi Industrial Export Co GJR-GARCH Volatility Analysis
Volatility prediction for Sunday, September 13th, 2026
1 Day
25.28%
decreased by 0.39%
1 Week
26.58%
increased by 0.91%
1 Month
30.73%
increased by 5.06%
Analysis last updated: Friday, September 11, 2026 at 09:08 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 14, 2005 to Sep 10, 2026Model Insight
Volatility shocks decay with a half-life of 38 trading days, meaning a shock loses half its impact after approximately 38 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 38-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1817 | 2.80*** |
| αARCH | 0.0751 | 2.56** |
| βGARCH | 0.8922 | 35.36*** |
| γleverage | 0.0291 | 0.74 |
0.982
Persistence38d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1817 | 2.80*** |
α ARCH Response to squared shocks | 0.0751 | 2.56** |
β GARCH Volatility persistence | 0.8922 | 35.36*** |
γ leverage Additional response to negative shocks | 0.0291 | 0.74 |
Persistence:
0.982
Half-life:
38 days
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