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V-Lab

CBOE Google Volatility Index GARCH Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

104.19%

decreased by 0.21%

1 Week

106.42%

increased by 2.02%

1 Month

111.32%

increased by 6.92%

Analysis last updated: Tuesday, July 21, 2026 at 12:02 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOE Google Volatility Index GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 7, 2011 to Jul 17, 2026

Model Insight

Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.

σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
6.92***
α

ARCH

Response to squared shocks

0.0271
8.80***
β

GARCH

Volatility persistence

0.8805
61.37***

Persistence:

0.908

Half-life:

7 days