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Yamada Consulting Group Co GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

28.62%

decreased by 0.15%

1 Week

31.50%

increased by 2.73%

1 Month

39.07%

increased by 10.30%

Analysis last updated: Friday, September 11, 2026 at 08:25 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Yamada Consulting Group Co GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 23, 2001 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 17 trading days, meaning a shock loses half its impact after approximately 17 days.

σ

GJR-GARCH Model

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Shock decay: Shocks decay with a 17-day half-life
ParamValuet-stat
ωconst0.4919
4.88***
αARCH0.1462
4.15***
βGARCH0.8151
40.55***
γleverage-0.0044
-0.08

0.959

Persistence

17d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.4919
4.88***
α

ARCH

Response to squared shocks

0.1462
4.15***
β

GARCH

Volatility persistence

0.8151
40.55***
γ

leverage

Additional response to negative shocks

-0.0044
-0.08

Persistence:

0.959

Half-life:

17 days