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Yamada Consulting Group Co GAS-GARCH Student T Volatility Analysis

Volatility prediction for Wednesday, October 7th, 2026

1 Day

25.08%

decreased by 0.69%

1 Week

27.48%

increased by 1.71%

1 Month

34.95%

increased by 9.18%

Analysis last updated: Wednesday, October 7, 2026 at 07:24 PM UTC

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Date Range:

from

10/06/2024

to

10/06/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Yamada Consulting Group Co GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 23, 2001 to Oct 2, 2026

Model Insight

Volatility shocks decay with a half-life of 59 trading days, meaning a shock loses half its impact after approximately 59 days. Returns follow a Student-t distribution with v = 2.88 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 59-day half-lifev = 2.88 · fat tails
ParamValuet-stat
ωconst24.2070
0.73
αARCH0.1250
15.73***
βGARCH0.9884
62.82***
νDF2.8787
11.97***

0.988

Persistence

59d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

24.2070
0.73
α

ARCH

Response to squared shocks

0.1250
15.73***
β

GARCH

Volatility persistence

0.9884
62.82***
ν

DF

Student-t tail thickness

2.8787
11.97***

Persistence:

0.988

Half-life:

59 days