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Leonardo SpA GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

35.88%

increased by 0.09%

1 Week

36.08%

increased by 0.29%

1 Month

36.78%

increased by 0.99%

Analysis last updated: Friday, September 11, 2026 at 07:54 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Leonardo SpA 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

Volatility shocks decay with a half-life of 39 trading days, meaning a shock loses half its impact after approximately 39 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 39-day half-life
ParamValuet-stat
ωconst0.1200
4.28***
αARCH0.0396
2.96***
βGARCH0.9198
73.14***
γleverage0.0454
1.21

0.982

Persistence

39d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1200
4.28***
α

ARCH

Response to squared shocks

0.0396
2.96***
β

GARCH

Volatility persistence

0.9198
73.14***
γ

leverage

Additional response to negative shocks

0.0454
1.21

Persistence:

0.982

Half-life:

39 days