V-Lab
Big Sky Industrial Inc Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Wednesday, September 16th, 2026
1 Day
58.61%
decreased by 2.22%
1 Week
59.48%
decreased by 1.35%
1 Month
62.07%
increased by 1.24%
Analysis last updated: Wednesday, September 16, 2026 at 02:16 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Sep 11, 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 16 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 | 0.7675 | 7.62*** |
| αARCH | 0.1081 | 7.58*** |
| βGARCH | 0.8496 | 43.99*** |
Spline Coefficients
K=7
| γ1 | -0.0042 | -0.22 |
| γ2 | -0.0320 | -1.02 |
| γ3 | 0.0707 | 2.19** |
| γ4 | -0.0518 | -1.32 |
| γ5 | 0.0475 | 1.44 |
| γ6 | -0.0767 | -3.01*** |
| γ7 | 0.0696 | 3.38*** |
0.958
Persistence16d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7675 | 7.62*** |
α ARCH Response to squared shocks | 0.1081 | 7.58*** |
β GARCH Volatility persistence | 0.8496 | 43.99*** |
Spline Coefficients
K=7
| γ1 | -0.0042 | -0.22 |
| γ2 | -0.0320 | -1.02 |
| γ3 | 0.0707 | 2.19** |
| γ4 | -0.0518 | -1.32 |
| γ5 | 0.0475 | 1.44 |
| γ6 | -0.0767 | -3.01*** |
| γ7 | 0.0696 | 3.38*** |
Persistence:
0.958
Half-life:
16 days
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