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V-Lab

Nissui Corp GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

26.76%

decreased by 1.35%

1 Week

27.10%

decreased by 1.01%

1 Month

28.33%

increased by 0.22%

Analysis last updated: Sunday, July 26, 2026 at 02:10 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Nissui Corp GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 3, 1990 to Jul 24, 2026

Model Insight

Volatility shocks decay with a half-life of 60 trading days, meaning a shock loses half its impact after approximately 60 days. Returns follow a Student-t distribution with v = 4.57 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

6.0315
4.64***
α

ARCH

Response to squared shocks

0.0703
38.23***
β

GARCH

Volatility persistence

0.9884
384.16***
ν

DF

Student-t tail thickness

4.5675
11.79***

Persistence:

0.988

Half-life:

60 days