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V-Lab

Daiwa House Industry Co Ltd GAS-GARCH Student T Volatility Analysis

Volatility prediction for Thursday, September 24th, 2026

1 Day

19.61%

increased by 0.91%

1 Week

19.81%

increased by 1.11%

1 Month

20.59%

increased by 1.89%

Analysis last updated: Saturday, September 19, 2026 at 11:18 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Daiwa House Industry Co Ltd 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 Sep 18, 2026

Model Insight

With persistence 0.994, volatility shocks have a half-life of 124 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 6.50 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.994, shock half-life ~124 daysv = 6.50 · fat tails
ParamValuet-stat
ωconst4.4300
1.27
αARCH0.0631
10.94***
βGARCH0.9944
238.30***
νDF6.4997
2.22**

0.994

Persistence

124d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

4.4300
1.27
α

ARCH

Response to squared shocks

0.0631
10.94***
β

GARCH

Volatility persistence

0.9944
238.30***
ν

DF

Student-t tail thickness

6.4997
2.22**

Persistence:

0.994

Half-life:

124 days