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V-Lab
V-Lab

CBOE Energy ETF Volatility Index APARCH Volatility Analysis

Inactive

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

1 Day

99.99%

1 Week

98.25%

1 Month

94.75%

Analysis last updated: Wednesday, September 2, 2026 at 03:48 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of CBOE Energy ETF Volatility Index APARCH

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
Boundary Parameters

Model Insight

Volatility shocks decay with a half-life of 6 trading days, meaning a shock loses half its impact after approximately 6 days. The volatility power δ = 1.23 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.

σ

APARCH Model

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Shock decay: Shocks decay with a 6-day half-lifeδ = 1.23 · sub-quadratic power
ParamValuet-stat
ωconst1.0000
1.67*
αARCH0.1118
3.56***
βGARCH0.7898
16.20***
γleverage-0.4727
-1.81*
δpower1.2304
4.61***

0.884

Persistence

6d

Half-life
σ

APARCH Model

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ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0000
1.67*
α

ARCH

Response to squared shocks

0.1118
3.56***
β

GARCH

Volatility persistence

0.7898
16.20***
γ

leverage

Additional response to negative shocks

-0.4727
-1.81*
δ

power

Transformation power

1.2304
4.61***

Persistence:

0.884

Half-life:

6 days