V-Lab
Pusan Cast Iron Co Ltd GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, June 5th, 2025
1 Day
0.00%
unchanged at 0.00%
1 Week
0.00%
unchanged at 0.00%
1 Month
0.00%
unchanged at 0.00%
Analysis last updated: Tuesday, September 1, 2026 at 07:39 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 to Jun 4, 2025Hessian SE
Model Insight
With persistence 1.000, volatility shocks have a half-life of 1658 trading days (~6.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
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High persistence: persistence 1.000, shock half-life ~1658 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0000 | 0.00 |
| αARCH | 1.0013 | |
| βGARCH | 0.2910 | |
| γleverage | -0.5854 |
1.000
Persistence1658d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0000 | 0.00 |
α ARCH Response to squared shocks | 1.0013 | |
β GARCH Volatility persistence | 0.2910 | |
γ leverage Additional response to negative shocks | -0.5854 |
Persistence:
1.000
Half-life:
1658 days
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