V-Lab
Coca-Cola Co/The Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
23.00%
decreased by 0.37%
1 Week
22.59%
decreased by 0.78%
1 Month
21.28%
decreased by 2.09%
Analysis last updated: Friday, July 24, 2026 at 10:43 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Jul 24, 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 18 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3399 | 7.42*** |
α ARCH Response to squared shocks | 0.0664 | 6.29*** |
β GARCH Volatility persistence | 0.8951 | 56.08*** |
Spline Coefficients
K=8
| γ1 | 0.0225 | 0.78 |
| γ2 | -0.0007 | -0.02 |
| γ3 | -0.0975 | -3.51*** |
| γ4 | 0.1522 | 5.78*** |
| γ5 | -0.1207 | -4.12*** |
| γ6 | 0.0840 | 2.33** |
| γ7 | -0.0684 | -1.53 |
| γ8 | 0.0371 | 1.07 |
Persistence:
0.962
Half-life:
18 days
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