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V-Lab

CBOE NASDAQ-100 Volatility Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, July 24th, 2026

1 Day

88.36%

increased by 2.17%

1 Week

88.43%

increased by 2.24%

1 Month

88.60%

increased by 2.41%

Analysis last updated: Friday, July 24, 2026 at 11:37 AM UTC

Date Range:

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to

6M ·

1Y ·

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10Y ·

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graph of CBOE NASDAQ-100 Volatility Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 23, 2001 to Jul 17, 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

2.1027
19.14***
α

ARCH

Response to squared shocks

0.1627
22.59***
β

GARCH

Volatility persistence

0.8516
205.79***
γ

leverage

Additional response to negative shocks

-0.1627
-22.01***

Persistence:

0.933

Half-life:

10 days