V-Lab
Mercedes-Benz Group AG Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
32.89%
increased by 6.87%
1 Week
33.05%
increased by 7.03%
1 Month
33.64%
increased by 7.62%
Analysis last updated: Saturday, September 19, 2026 at 08:26 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 26, 1998 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 35 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 | 1.2575 | 6.08*** |
| αARCH | 0.0734 | 8.16*** |
| βGARCH | 0.9070 | 86.86*** |
Spline Coefficients
K=4
| γ1 | 0.0340 | 2.19** |
| γ2 | -0.0602 | -2.63*** |
| γ3 | 0.0484 | 3.66*** |
| γ4 | -0.0312 | -3.97*** |
0.980
Persistence35d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2575 | 6.08*** |
α ARCH Response to squared shocks | 0.0734 | 8.16*** |
β GARCH Volatility persistence | 0.9070 | 86.86*** |
Spline Coefficients
K=4
| γ1 | 0.0340 | 2.19** |
| γ2 | -0.0602 | -2.63*** |
| γ3 | 0.0484 | 3.66*** |
| γ4 | -0.0312 | -3.97*** |
Persistence:
0.980
Half-life:
35 days
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