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V-Lab

CBOE Realized Volatility Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, August 21st, 2026

1 Day

34.62%

decreased by 1.27%

1 Week

42.53%

increased by 6.64%

1 Month

47.41%

increased by 11.52%

Analysis last updated: Friday, August 21, 2026 at 11:30 AM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of CBOE Realized Volatility Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 1, 2012 to Aug 14, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

3.4452
13.82***
α

ARCH

Response to squared shocks

0.0200
2.45**
β

GARCH

Volatility persistence

0.2394
6.26***
γ

leverage

Additional response to negative shocks

0.7600
7.53***

Persistence:

0.639

Half-life:

2 days