V-Lab
CBOE Gold Volatility Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
59.98%
decreased by 0.66%
1 Week
63.67%
increased by 3.03%
1 Month
70.10%
increased by 9.46%
Analysis last updated: Friday, September 11, 2026 at 12:05 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 3, 2008 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 5 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 | 1.2894 | 10.17*** |
| αARCH | 0.1520 | 6.41*** |
| βGARCH | 0.7205 | 18.08*** |
Spline Coefficients
K=1
| γ1 | 0.0018 | 3.07*** |
0.872
Persistence5d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2894 | 10.17*** |
α ARCH Response to squared shocks | 0.1520 | 6.41*** |
β GARCH Volatility persistence | 0.7205 | 18.08*** |
Spline Coefficients
K=1
| γ1 | 0.0018 | 3.07*** |
Persistence:
0.872
Half-life:
5 days
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