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V-Lab

Obayashi Corp GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 28th, 2026

1 Day

26.82%

decreased by 1.23%

1 Week

27.68%

decreased by 0.37%

1 Month

30.28%

increased by 2.23%

Analysis last updated: Saturday, September 26, 2026 at 09:24 PM UTC

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graph of Obayashi Corp GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 3, 1990 to Sep 25, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 89% more than equivalent positive returns.

σ

GJR-GARCH Model

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Leverage: Negative returns increase volatility 89% more than positive returns
ParamValuet-stat
ωconst0.1946
6.31***
αARCH0.0797
5.22***
βGARCH0.8507
65.33***
γleverage0.0705
2.15**

0.966

Persistence

20d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1946
6.31***
α

ARCH

Response to squared shocks

0.0797
5.22***
β

GARCH

Volatility persistence

0.8507
65.33***
γ

leverage

Additional response to negative shocks

0.0705
2.15**

Persistence:

0.966

Half-life:

20 days