V-Lab
SJ Au Logistica FII GJR-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, October 1st, 2026
1 Day
114.40%
1 Week
124.93%
1 Month
160.27%
Analysis last updated: Thursday, October 1, 2026 at 10:29 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 11, 2021 to Sep 25, 2026Model Insight
With persistence 1.000, volatility shocks have a half-life of 1386294 trading days (~5501.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
GJR-GARCH Model
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| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 1.31 |
| αARCH | 0.2513 | 0.97 |
| βGARCH | 0.8585 | 12.79*** |
| γleverage | -0.2197 | -0.88 |
1.000
Persistence1386294d
Half-lifeGJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 1.31 |
α ARCH Response to squared shocks | 0.2513 | 0.97 |
β GARCH Volatility persistence | 0.8585 | 12.79*** |
γ leverage Additional response to negative shocks | -0.2197 | -0.88 |
Persistence:
1.000
Half-life:
1386294 days
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