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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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 16, 2011 to Feb 11, 2022Model 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
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Shock decay: Shocks decay with a 5-day half-lifev = 6.25 · fat tails
| Param | Value | t-stat |
|---|---|---|
| ωlong-run | 33.0434 | 4.22*** |
| αscore | 0.1353 | 3.34*** |
| βpersistence | 0.8638 | 23.41*** |
| νDF | 6.2482 | 0.89 |
0.864
Persistence5d
Half-life𝑓
GAS-GARCH-T Model
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| Parameter | Value | t-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
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