adidas AG Spline-GARCH Volatility Analysis
Volatility prediction for Wednesday, October 14th, 2026
1 Day
32.98%
increased by 0.90%
1 Week
33.68%
increased by 1.60%
1 Month
35.11%
increased by 3.03%
Analysis last updated: Wednesday, October 14, 2026 at 07:49 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 17, 1995 to Oct 9, 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 6 trading days.
τ
Spline-GARCH Model
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Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.9213 | 10.35*** |
| αARCH | 0.0616 | 5.17*** |
| βGARCH | 0.8336 | 23.45*** |
Spline Coefficients
K=8
| γ1 | -0.0394 | -1.47 |
| γ2 | 0.0003 | 0.01 |
| γ3 | 0.1226 | 3.59*** |
| γ4 | -0.1491 | -3.78*** |
| γ5 | 0.0994 | 2.16** |
| γ6 | -0.0341 | -0.87 |
| γ7 | -0.0066 | -0.21 |
| γ8 | 0.0098 | 0.19 |
0.895
Persistence6d
Half-lifeτ
Spline-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9213 | 10.35*** |
α ARCH Response to squared shocks | 0.0616 | 5.17*** |
β GARCH Volatility persistence | 0.8336 | 23.45*** |
Spline Coefficients
K=8
| γ1 | -0.0394 | -1.47 |
| γ2 | 0.0003 | 0.01 |
| γ3 | 0.1226 | 3.59*** |
| γ4 | -0.1491 | -3.78*** |
| γ5 | 0.0994 | 2.16** |
| γ6 | -0.0341 | -0.87 |
| γ7 | -0.0066 | -0.21 |
| γ8 | 0.0098 | 0.19 |
Persistence:
0.895
Half-life:
6 days
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