CBOE Gold Volatility Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, October 27th, 2026
1 Day
78.64%
decreased by 5.02%
1 Week
77.83%
decreased by 5.83%
1 Month
76.30%
decreased by 7.36%
Analysis last updated: Tuesday, October 27, 2026 at 12:15 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 3, 2008 to Oct 23, 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
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Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2806 | 10.27*** |
| αARCH | 0.1498 | 6.37*** |
| βGARCH | 0.7205 | 17.97*** |
Spline Coefficients
K=1
| γ1 | 0.0018 | 3.03*** |
0.870
Persistence5d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2806 | 10.27*** |
α ARCH Response to squared shocks | 0.1498 | 6.37*** |
β GARCH Volatility persistence | 0.7205 | 17.97*** |
Spline Coefficients
K=1
| γ1 | 0.0018 | 3.03*** |
Persistence:
0.870
Half-life:
5 days
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