V-Lab
Abbott Laboratories Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 15th, 2026
1 Day
25.51%
decreased by 0.34%
1 Week
25.60%
decreased by 0.25%
1 Month
25.93%
increased by 0.08%
Analysis last updated: Monday, September 14, 2026 at 09:41 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 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 27 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 | 0.8585 | 7.87*** |
| αARCH | 0.0547 | 7.09*** |
| βGARCH | 0.9198 | 84.17*** |
Spline Coefficients
K=3
| γ1 | -0.0128 | -4.85*** |
| γ2 | 0.0212 | 5.40*** |
| γ3 | -0.0113 | -4.67*** |
0.974
Persistence27d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8585 | 7.87*** |
α ARCH Response to squared shocks | 0.0547 | 7.09*** |
β GARCH Volatility persistence | 0.9198 | 84.17*** |
Spline Coefficients
K=3
| γ1 | -0.0128 | -4.85*** |
| γ2 | 0.0212 | 5.40*** |
| γ3 | -0.0113 | -4.67*** |
Persistence:
0.974
Half-life:
27 days
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