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V-Lab

Petrolia Se GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

77.11%

increased by 0.09%

1 Week

78.48%

increased by 1.46%

1 Month

83.49%

increased by 6.47%

Analysis last updated: Friday, September 11, 2026 at 08:49 PM UTC

Date Range:

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to

6M ·

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2Y ·

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10Y ·

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graph of Petrolia Se GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 11, 1999 to Sep 4, 2026

Model Insight

With persistence 0.993, volatility shocks have a half-life of 97 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 2.28 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

High persistence: persistence 0.993, shock half-life ~97 daysv = 2.28 · fat tails
ParamValuet-stat
ωconst83.1158
1.92*
αARCH0.0512
18.34***
βGARCH0.9929
318.02***
νDF2.2842
67.28***

0.993

Persistence

97d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

83.1158
1.92*
α

ARCH

Response to squared shocks

0.0512
18.34***
β

GARCH

Volatility persistence

0.9929
318.02***
ν

DF

Student-t tail thickness

2.2842
67.28***

Persistence:

0.993

Half-life:

97 days