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V-Lab

FTSE 100 Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, July 17th, 2026

1 Day

11.38%

decreased by 0.34%

1 Week

11.61%

decreased by 0.11%

1 Month

12.36%

increased by 0.64%

Analysis last updated: Thursday, July 16, 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 Jul 10, 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

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0219
21.61***
α

ARCH

Response to squared shocks

0.0149
8.53***
β

GARCH

Volatility persistence

0.8944
498.85***
γ

leverage

Additional response to negative shocks

0.1371
27.15***

Persistence:

0.978

Half-life:

31 days