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V-Lab

FTSE 100 Index GJR-GARCH Volatility Analysis

Volatility prediction for Thursday, September 10th, 2026

1 Day

11.85%

increased by 3.11%

1 Week

12.05%

increased by 3.31%

1 Month

12.70%

increased by 3.96%

Analysis last updated: Wednesday, September 9, 2026 at 05:03 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of FTSE 100 Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Sep 4, 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
ωconst0.0216
5.39***
αARCH0.0152
2.18**
βGARCH0.8944
125.02***
γleverage0.1370
6.79***

0.978

Persistence

31d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0216
5.39***
α

ARCH

Response to squared shocks

0.0152
2.18**
β

GARCH

Volatility persistence

0.8944
125.02***
γ

leverage

Additional response to negative shocks

0.1370
6.79***

Persistence:

0.978

Half-life:

31 days