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V-Lab
V-Lab

Kaleon SpA GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

14.88%

unchanged at 0.00%

1 Week

15.50%

increased by 0.62%

1 Month

15.95%

increased by 1.07%

Analysis last updated: Wednesday, September 16, 2026 at 05:25 PM UTC

Date Range:

from

to

6M ·

All

graph of Kaleon SpA GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 1, 2025 to Sep 14, 2026

Model Insight

Volatility shocks decay with a half-life of 2 trading days, meaning a shock loses half its impact after approximately 2 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 2-day half-life
ParamValuet-stat
ωconst0.3520
1.07
αARCH0.2426
0.72
βGARCH0.5157
1.46
γleverage-0.1993
-0.53

0.659

Persistence

2d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.3520
1.07
α

ARCH

Response to squared shocks

0.2426
0.72
β

GARCH

Volatility persistence

0.5157
1.46
γ

leverage

Additional response to negative shocks

-0.1993
-0.53

Persistence:

0.659

Half-life:

2 days