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V-Lab

Sam Holdings Corporation GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

20.71%

decreased by 0.71%

1 Week

22.39%

increased by 0.97%

1 Month

27.35%

increased by 5.93%

Analysis last updated: Friday, September 11, 2026 at 09:46 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Sam Holdings Corporation GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 21, 2007 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 27 trading days, meaning a shock loses half its impact after approximately 27 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 27-day half-life
ParamValuet-stat
ωconst0.1904
4.81***
αARCH0.1455
4.80***
βGARCH0.8216
51.56***
γleverage0.0157
0.29

0.975

Persistence

27d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1904
4.81***
α

ARCH

Response to squared shocks

0.1455
4.80***
β

GARCH

Volatility persistence

0.8216
51.56***
γ

leverage

Additional response to negative shocks

0.0157
0.29

Persistence:

0.975

Half-life:

27 days