V-Lab
Upc Technology Corp Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
34.20%
increased by 0.51%
1 Week
34.30%
increased by 0.61%
1 Month
34.65%
increased by 0.96%
Analysis last updated: Friday, September 11, 2026 at 09:25 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 4, 1990 to Sep 4, 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 30 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 | 1.0292 | 5.41*** |
| αARCH | 0.0687 | 9.46*** |
| βGARCH | 0.9083 | 91.53*** |
Spline Coefficients
K=4
| γ1 | -0.0073 | -0.86 |
| γ2 | 0.0009 | 0.07 |
| γ3 | 0.0180 | 2.57** |
| γ4 | -0.0155 | -2.91*** |
0.977
Persistence30d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0292 | 5.41*** |
α ARCH Response to squared shocks | 0.0687 | 9.46*** |
β GARCH Volatility persistence | 0.9083 | 91.53*** |
Spline Coefficients
K=4
| γ1 | -0.0073 | -0.86 |
| γ2 | 0.0009 | 0.07 |
| γ3 | 0.0180 | 2.57** |
| γ4 | -0.0155 | -2.91*** |
Persistence:
0.977
Half-life:
30 days
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