V-Lab
RGF Capital Markets Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
47.48%
decreased by 6.54%
1 Week
48.18%
decreased by 5.84%
1 Month
50.49%
decreased by 3.53%
Analysis last updated: Friday, September 11, 2026 at 07:31 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 17, 2018 to Sep 4, 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 27 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 | 1.6657 | 1.74* |
| αARCH | 0.3345 | 5.39*** |
| βGARCH | 0.6402 | 9.93*** |
Spline Coefficients
K=9
| γ1 | -5.4280 | -0.29 |
| γ2 | 24.1846 | 0.63 |
| γ3 | -84.5843 | -1.40 |
| γ4 | 160.6831 | 1.89* |
| γ5 | -150.0843 | -2.23** |
| γ6 | 75.3951 | 3.05*** |
| γ7 | -35.5023 | -4.11*** |
| γ8 | 21.3890 | 1.87* |
| γ9 | -5.8885 | -0.56 |
0.975
Persistence27d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.6657 | 1.74* |
α ARCH Response to squared shocks | 0.3345 | 5.39*** |
β GARCH Volatility persistence | 0.6402 | 9.93*** |
Spline Coefficients
K=9
| γ1 | -5.4280 | -0.29 |
| γ2 | 24.1846 | 0.63 |
| γ3 | -84.5843 | -1.40 |
| γ4 | 160.6831 | 1.89* |
| γ5 | -150.0843 | -2.23** |
| γ6 | 75.3951 | 3.05*** |
| γ7 | -35.5023 | -4.11*** |
| γ8 | 21.3890 | 1.87* |
| γ9 | -5.8885 | -0.56 |
Persistence:
0.975
Half-life:
27 days
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