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Yamada Consulting Group Co GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

28.27%

decreased by 0.25%

1 Week

30.38%

increased by 1.86%

1 Month

37.15%

increased by 8.63%

Analysis last updated: Friday, September 11, 2026 at 08:26 PM UTC

Date Range:

from

to

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 Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 58 trading days, meaning a shock loses half its impact after approximately 58 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 58-day half-lifev = 2.88 · fat tails
ParamValuet-stat
ωconst24.0059
0.72
αARCH0.1255
15.35***
βGARCH0.9881
61.03***
νDF2.8819
11.70***

0.988

Persistence

58d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

24.0059
0.72
α

ARCH

Response to squared shocks

0.1255
15.35***
β

GARCH

Volatility persistence

0.9881
61.03***
ν

DF

Student-t tail thickness

2.8819
11.70***

Persistence:

0.988

Half-life:

58 days