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Inpex Corp GAS-GARCH Student T Volatility Analysis

Volatility prediction for Thursday, September 24th, 2026

1 Day

35.99%

decreased by 1.78%

1 Week

36.07%

decreased by 1.70%

1 Month

36.34%

decreased by 1.43%

Analysis last updated: Sunday, September 20, 2026 at 12:00 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Inpex Corp GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 17, 2004 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 48 trading days, meaning a shock loses half its impact after approximately 48 days. Returns follow a Student-t distribution with v = 6.69 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 48-day half-lifev = 6.69 · fat tails
ParamValuet-stat
ωconst5.9076
1.56
αARCH0.0672
6.44***
βGARCH0.9858
98.07***
νDF6.6852
1.27

0.986

Persistence

48d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.9076
1.56
α

ARCH

Response to squared shocks

0.0672
6.44***
β

GARCH

Volatility persistence

0.9858
98.07***
ν

DF

Student-t tail thickness

6.6852
1.27

Persistence:

0.986

Half-life:

48 days