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V-Lab

Yamada Consulting Group Co GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, August 26th, 2026

1 Day

27.97%

decreased by 0.05%

1 Week

31.00%

increased by 2.98%

1 Month

38.85%

increased by 10.83%

Analysis last updated: Wednesday, August 26, 2026 at 08:59 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 Aug 21, 2026

Model Insight

Volatility shocks decay with a half-life of 16 trading days, meaning a shock loses half its impact after approximately 16 days.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.4998
19.51***
α

ARCH

Response to squared shocks

0.1470
16.53***
β

GARCH

Volatility persistence

0.8137
160.90***
γ

leverage

Additional response to negative shocks

-0.0047
-0.32

Persistence:

0.958

Half-life:

16 days