V-Lab
Vulcan Infrastructure and Power Inc Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, October 6th, 2026
1 Day
83.55%
decreased by 1.91%
1 Week
89.76%
increased by 4.30%
1 Month
96.06%
increased by 10.60%
Analysis last updated: Monday, October 5, 2026 at 09:39 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 2, 2026Model Insight
This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 2 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.9200 | 5.37*** |
| αARCH | 0.1276 | 2.74*** |
| βGARCH | 0.6246 | 5.86*** |
Spline Coefficients
K=2
| γ1 | -0.1698 | -1.67* |
| γ2 | 0.2367 | 1.85* |
0.752
Persistence2d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9200 | 5.37*** |
α ARCH Response to squared shocks | 0.1276 | 2.74*** |
β GARCH Volatility persistence | 0.6246 | 5.86*** |
Spline Coefficients
K=2
| γ1 | -0.1698 | -1.67* |
| γ2 | 0.2367 | 1.85* |
Persistence:
0.752
Half-life:
2 days
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