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V-Lab

CBOE Gold Volatility Index APARCH Volatility Analysis

Volatility prediction for Thursday, July 16th, 2026

1 Day

95.40%

decreased by 13.57%

1 Week

93.74%

decreased by 15.23%

1 Month

90.48%

decreased by 18.49%

Analysis last updated: Thursday, July 16, 2026 at 12:05 AM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

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graph of CBOE Gold Volatility Index APARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 3, 2008 to Jul 10, 2026

Model Insight

This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 155% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets. The volatility power δ = 1.24 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.

σ

APARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0000
7.87***
α

ARCH

Response to squared shocks

0.1520
16.54***
β

GARCH

Volatility persistence

0.7520
58.73***
γ

leverage

Additional response to negative shocks

-0.3612
-7.48***
δ

power

Transformation power

1.2355
20.87***

Persistence:

0.879

Half-life:

5 days