V-Lab
RWE AG Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
24.56%
decreased by 0.94%
1 Week
24.73%
decreased by 0.77%
1 Month
25.22%
decreased by 0.28%
Analysis last updated: Sunday, July 26, 2026 at 12:15 AM 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 16 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2532 | 4.37*** |
α ARCH Response to squared shocks | 0.0766 | 8.07*** |
β GARCH Volatility persistence | 0.8822 | 69.42*** |
Spline Coefficients
K=6
| γ1 | 0.0834 | 5.71*** |
| γ2 | -0.1303 | -6.38*** |
| γ3 | 0.0701 | 4.99*** |
| γ4 | -0.0229 | -1.76* |
| γ5 | -0.0152 | -1.12 |
| γ6 | 0.0226 | 2.10** |
Persistence:
0.959
Half-life:
16 days
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