Vulcan Infrastructure and Power Inc GJR-GARCH Volatility Analysis
Volatility prediction for Monday, October 19th, 2026
1 Day
97.04%
decreased by 1.05%
1 Week
101.09%
increased by 3.00%
1 Month
110.00%
increased by 11.91%
Analysis last updated: Friday, October 16, 2026 at 10:43 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 15, 2021 to Oct 16, 2026Boundary Parameters
Model Insight
Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 8-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 2.10** |
| αARCH | 0.0758 | 1.71* |
| βGARCH | 0.8439 | 15.01*** |
| γleverage | -0.0140 | -0.15 |
0.913
Persistence8d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 2.10** |
α ARCH Response to squared shocks | 0.0758 | 1.71* |
β GARCH Volatility persistence | 0.8439 | 15.01*** |
γ leverage Additional response to negative shocks | -0.0140 | -0.15 |
Persistence:
0.913
Half-life:
8 days
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