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V-Lab

CAC 40 Index GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

16.63%

increased by 0.08%

1 Week

16.79%

increased by 0.24%

1 Month

17.33%

increased by 0.78%

Analysis last updated: Monday, September 14, 2026 at 04:02 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CAC 40 Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 11, 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

Leverage: volatility responds almost entirely to negative shocks
ParamValuet-stat
ωconst0.0350
4.03***
αARCH0.0113
1.29
βGARCH0.9002
111.15***
γleverage0.1330
7.04***

0.978

Persistence

31d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0350
4.03***
α

ARCH

Response to squared shocks

0.0113
1.29
β

GARCH

Volatility persistence

0.9002
111.15***
γ

leverage

Additional response to negative shocks

0.1330
7.04***

Persistence:

0.978

Half-life:

31 days