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Samhallsbygg I Nor GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

65.92%

decreased by 0.70%

1 Week

69.86%

increased by 3.24%

1 Month

80.36%

increased by 13.74%

Analysis last updated: Saturday, September 19, 2026 at 08:30 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Samhallsbygg I Nor GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 3, 2023 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 14 trading days, meaning a shock loses half its impact after approximately 14 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 14-day half-life
ParamValuet-stat
ωconst1.9367
1.03
αARCH0.0000
0.00
βGARCH0.8692
18.68***
γleverage0.1661
1.78*

0.952

Persistence

14d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.9367
1.03
α

ARCH

Response to squared shocks

0.0000
0.00
β

GARCH

Volatility persistence

0.8692
18.68***
γ

leverage

Additional response to negative shocks

0.1661
1.78*

Persistence:

0.952

Half-life:

14 days