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V-Lab

CBOE Gold Volatility Index Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

78.60%

decreased by 8.42%

1 Week

77.85%

decreased by 9.17%

1 Month

76.43%

decreased by 10.59%

Analysis last updated: Saturday, August 22, 2026 at 12:15 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOE Gold Volatility Index S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 3, 2008 to Aug 21, 2026

Model 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

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.2888
10.14***
α

ARCH

Response to squared shocks

0.1521
6.42***
β

GARCH

Volatility persistence

0.7207
18.10***
γi Spline Coefficients
K=1
γ10.0018
3.04***

Persistence:

0.873

Half-life:

5 days