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V-Lab
V-Lab

CBOE Energy ETF Volatility Index GAS-GARCH Student T Volatility Analysis

Inactive

Last recorded values (Monday, February 14th, 2022):

1 Day

98.32%

1 Week

96.61%

1 Month

93.43%

Analysis last updated: Wednesday, October 21, 2026 at 01:13 AM UTC

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Date Range:

from

02/11/2020

to

02/11/2022

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOE Energy ETF Volatility Index GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Mar 16, 2011 to Feb 11, 2022

Model Insight

Volatility shocks decay with a half-life of 5 trading days, meaning a shock loses half its impact after approximately 5 days. Returns follow a Student-t distribution with v = 6.25 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 5-day half-lifev = 6.25 · fat tails
ParamValuet-stat
ωlong-run33.0434
4.22***
αscore0.1353
3.34***
βpersistence0.8638
23.41***
νDF6.2482
0.89

0.864

Persistence

5d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

long-run

Long-run variance given a price move

33.0434
4.22***
α

score

Weight on the scaled score

0.1353
3.34***
β

persistence

Volatility persistence

0.8638
23.41***
ν

DF

Student-t tail thickness

6.2482
0.89

Persistence:

0.864

Half-life:

5 days