V-Lab
Pusan Cast Iron Co Ltd GARCH Volatility Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Volatility prediction for Thursday, June 5th, 2025
1 Day
0.05%
unchanged at 0.00%
1 Week
0.05%
unchanged at 0.00%
1 Month
0.07%
increased by 0.02%
Analysis last updated: Tuesday, September 1, 2026 at 07:38 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 to Jun 4, 2025Model Insight
Estimated persistence of 1.000 is at or above 1 (non-stationary): volatility shocks do not decay and the long-run variance is undefined, so long-horizon forecasts should be treated with caution.
σ
GARCH Model
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High persistence: persistence 1.000 ≥ 1, shocks do not decay
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0000 | |
| αARCH | 0.1143 | 11.73*** |
| βGARCH | 0.8857 | 249.70*** |
1.000
Persistence-
Half-lifeσ
GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0000 | |
α ARCH Response to squared shocks | 0.1143 | 11.73*** |
β GARCH Volatility persistence | 0.8857 | 249.70*** |
Persistence:
1.000
Half-life:
-
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