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V-Lab

Inpex Corp GAS-GARCH Student T Volatility Analysis

Volatility prediction for Thursday, October 22nd, 2026

1 Day

32.25%

decreased by 1.37%

1 Week

32.44%

decreased by 1.18%

1 Month

33.13%

decreased by 0.49%

Analysis last updated: Thursday, October 22, 2026 at 07:23 PM UTC

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Date Range:

from

10/21/2024

to

10/21/2026

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 Oct 16, 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 = 6.70 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 = 6.70 · fat tails
ParamValuet-stat
ωlong-run5.8770
1.57
αscore0.0669
6.45***
βpersistence0.9858
98.14***
νDF6.6980
1.26

0.986

Persistence

48d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

long-run

Long-run variance given a price move

5.8770
1.57
α

score

Weight on the scaled score

0.0669
6.45***
β

persistence

Volatility persistence

0.9858
98.14***
ν

DF

Student-t tail thickness

6.6980
1.26

Persistence:

0.986

Half-life:

48 days