V-Lab
CME Feeder Cattle Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
18.02%
decreased by 0.21%
1 Week
18.03%
decreased by 0.20%
1 Month
18.08%
decreased by 0.15%
Analysis last updated: Saturday, September 19, 2026 at 04:06 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 3, 2001 to Sep 18, 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 36 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 | 0.5327 | 7.25*** |
| αARCH | 0.0266 | 5.80*** |
| βGARCH | 0.9545 | 118.13*** |
Spline Coefficients
K=4
| γ1 | -0.0482 | -2.82*** |
| γ2 | 0.0707 | 2.55** |
| γ3 | -0.0349 | -1.85* |
| γ4 | 0.0144 | 1.22 |
0.981
Persistence36d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.5327 | 7.25*** |
α ARCH Response to squared shocks | 0.0266 | 5.80*** |
β GARCH Volatility persistence | 0.9545 | 118.13*** |
Spline Coefficients
K=4
| γ1 | -0.0482 | -2.82*** |
| γ2 | 0.0707 | 2.55** |
| γ3 | -0.0349 | -1.85* |
| γ4 | 0.0144 | 1.22 |
Persistence:
0.981
Half-life:
36 days
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