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CBOE Google Volatility Index GJR-GARCH Volatility Analysis

Volatility prediction for Thursday, October 1st, 2026

1 Day

105.39%

increased by 0.64%

1 Week

108.08%

increased by 3.33%

1 Month

114.20%

increased by 9.45%

Analysis last updated: Thursday, October 1, 2026 at 11:35 AM UTC

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Date Range:

from

09/30/2024

to

09/30/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOE Google Volatility Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 7, 2011 to Sep 25, 2026

Model Insight

Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 8-day half-life
ParamValuet-stat
ωconst5.0000
2.31**
αARCH0.1029
1.87*
βGARCH0.8612
20.21***
γleverage-0.0988
-1.60

0.915

Persistence

8d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
2.31**
α

ARCH

Response to squared shocks

0.1029
1.87*
β

GARCH

Volatility persistence

0.8612
20.21***
γ

leverage

Additional response to negative shocks

-0.0988
-1.60

Persistence:

0.915

Half-life:

8 days