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V-Lab

CBOE VIX Indicative Ask Index GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, July 15th, 2026

1 Day

122.80%

decreased by 9.00%

1 Week

121.44%

decreased by 10.36%

1 Month

118.34%

decreased by 13.46%

Analysis last updated: Wednesday, July 15, 2026 at 11:30 AM UTC

Date Range:

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to

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graph of CBOE VIX Indicative Ask Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 18, 2009 to Jul 10, 2026

Model Insight

This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
15.91***
α

ARCH

Response to squared shocks

0.2176
14.47***
β

GARCH

Volatility persistence

0.7955
132.44***
γ

leverage

Additional response to negative shocks

-0.2176
-14.88***

Persistence:

0.904

Half-life:

7 days