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HeidelbergCement AG GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 18th, 2026

1 Day

34.07%

increased by 1.44%

1 Week

34.15%

increased by 1.52%

1 Month

34.44%

increased by 1.81%

Analysis last updated: Friday, September 18, 2026 at 07:09 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of HeidelbergCement AG 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 14, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 187% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 187% more than positive returns
ParamValuet-stat
ωconst0.0740
4.35***
αARCH0.0391
4.57***
βGARCH0.9108
98.78***
γleverage0.0730
3.16***

0.986

Persistence

50d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0740
4.35***
α

ARCH

Response to squared shocks

0.0391
4.57***
β

GARCH

Volatility persistence

0.9108
98.78***
γ

leverage

Additional response to negative shocks

0.0730
3.16***

Persistence:

0.986

Half-life:

50 days