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Korea Cast Iron Pipe Industries Co Ltd GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

16.32%

decreased by 1.13%

1 Week

17.62%

increased by 0.17%

1 Month

21.99%

increased by 4.54%

Analysis last updated: Sunday, September 20, 2026 at 12:38 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Korea Cast Iron Pipe Industries 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 0.997, volatility shocks have a half-life of 204 trading days (~0.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 2.94 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.997, shock half-life ~204 daysv = 2.94 · fat tails
ParamValuet-stat
ωconst27.0692
1.49
αARCH0.1060
35.83***
βGARCH0.9966
458.64***
νDF2.9449
42.27***

0.997

Persistence

204d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

27.0692
1.49
α

ARCH

Response to squared shocks

0.1060
35.83***
β

GARCH

Volatility persistence

0.9966
458.64***
ν

DF

Student-t tail thickness

2.9449
42.27***

Persistence:

0.997

Half-life:

204 days