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V-Lab

CBOE DJIA Volatility Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, August 21st, 2026

1 Day

90.37%

increased by 8.19%

1 Week

92.75%

increased by 10.57%

1 Month

99.23%

increased by 17.05%

Analysis last updated: Friday, August 21, 2026 at 11:34 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of CBOE DJIA Volatility Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 6, 1997 to Aug 14, 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

2.6490
17.91***
α

ARCH

Response to squared shocks

0.1718
17.78***
β

GARCH

Volatility persistence

0.8465
140.30***
γ

leverage

Additional response to negative shocks

-0.1436
-10.00***

Persistence:

0.946

Half-life:

13 days