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V-Lab

OMX Copenhagen 20 Index GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

15.83%

decreased by 0.59%

1 Week

16.07%

decreased by 0.35%

1 Month

16.82%

increased by 0.40%

Analysis last updated: Saturday, September 19, 2026 at 05:47 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of OMX Copenhagen 20 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 18, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 135% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 135% more than positive returns
ParamValuet-stat
ωconst0.0448
4.66***
αARCH0.0573
3.78***
βGARCH0.8746
78.05***
γleverage0.0771
2.38**

0.970

Persistence

23d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0448
4.66***
α

ARCH

Response to squared shocks

0.0573
3.78***
β

GARCH

Volatility persistence

0.8746
78.05***
γ

leverage

Additional response to negative shocks

0.0771
2.38**

Persistence:

0.970

Half-life:

23 days