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V-Lab

Kyoritsu Maintenance Co Ltd GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, July 20th, 2026

1 Day

27.98%

decreased by 3.44%

1 Week

29.74%

decreased by 1.68%

1 Month

30.71%

decreased by 0.71%

Analysis last updated: Saturday, July 18, 2026 at 10:28 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Kyoritsu Maintenance Co Ltd GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 20, 2021 to Jul 17, 2026

Model Insight

Volatility shocks decay with a half-life of 1 trading day, meaning a shock loses half its impact after approximately 1 day. Returns follow a Student-t distribution with v = 5.96 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

3.8226
18.53***
α

ARCH

Response to squared shocks

0.1580
5.46***
β

GARCH

Volatility persistence

0.5690
23.46***
ν

DF

Student-t tail thickness

5.9600
1.72*

Persistence:

0.569

Half-life:

1 days