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V-Lab

CBOE VIX Tail Hedge Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, August 21st, 2026

1 Day

10.89%

increased by 0.85%

1 Week

11.13%

increased by 1.09%

1 Month

11.93%

increased by 1.89%

Analysis last updated: Friday, August 21, 2026 at 11:36 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of CBOE VIX Tail Hedge Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 31, 2006 to Aug 14, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 234% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0179
19.01***
α

ARCH

Response to squared shocks

0.0546
7.36***
β

GARCH

Volatility persistence

0.8655
189.35***
γ

leverage

Additional response to negative shocks

0.1280
11.47***

Persistence:

0.984

Half-life:

43 days