K+S AG Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Thursday, October 8th, 2026
1 Day
26.17%
decreased by 0.88%
1 Week
26.81%
decreased by 0.24%
1 Month
28.45%
increased by 1.40%
Analysis last updated: Thursday, October 8, 2026 at 07:02 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Oct 2, 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 10 trading days.
τ
Zero Slope Spline-GARCH Model
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Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2529 | 7.11*** |
| αARCH | 0.0850 | 7.31*** |
| βGARCH | 0.8502 | 51.44*** |
Spline Coefficients
K=10
| γ1 | 0.0289 | 0.50 |
| γ2 | -0.0003 | 0.00 |
| γ3 | -0.1123 | -1.73* |
| γ4 | 0.2054 | 3.61*** |
| γ5 | -0.2030 | -3.99*** |
| γ6 | 0.1166 | 2.38** |
| γ7 | -0.0724 | -0.99 |
| γ8 | 0.1044 | 1.39 |
| γ9 | -0.1485 | -2.58*** |
| γ10 | 0.1184 | 2.97*** |
0.935
Persistence10d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2529 | 7.11*** |
α ARCH Response to squared shocks | 0.0850 | 7.31*** |
β GARCH Volatility persistence | 0.8502 | 51.44*** |
Spline Coefficients
K=10
| γ1 | 0.0289 | 0.50 |
| γ2 | -0.0003 | 0.00 |
| γ3 | -0.1123 | -1.73* |
| γ4 | 0.2054 | 3.61*** |
| γ5 | -0.2030 | -3.99*** |
| γ6 | 0.1166 | 2.38** |
| γ7 | -0.0724 | -0.99 |
| γ8 | 0.1044 | 1.39 |
| γ9 | -0.1485 | -2.58*** |
| γ10 | 0.1184 | 2.97*** |
Persistence:
0.935
Half-life:
10 days
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