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V-Lab
V-Lab

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

Inactive

Last recorded values (Monday, January 27th, 2025):

1 Day

221.78%

1 Week

218.05%

1 Month

204.38%

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

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Date Range:

from

01/24/2023

to

01/24/2025

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

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

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 1, 2008 to Jan 24, 2025

Model Insight

Volatility shocks decay with a half-life of 35 trading days, meaning a shock loses half its impact after approximately 35 days. Returns follow a Student-t distribution with v = 4.29 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 35-day half-lifev = 4.29 · fat tails
ParamValuet-stat
ωlong-run35.7896
1.27
αscore0.0768
6.98***
βpersistence0.9801
67.95***
νDF4.2923
2.16**

0.980

Persistence

35d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

long-run

Long-run variance given a price move

35.7896
1.27
α

score

Weight on the scaled score

0.0768
6.98***
β

persistence

Volatility persistence

0.9801
67.95***
ν

DF

Student-t tail thickness

4.2923
2.16**

Persistence:

0.980

Half-life:

35 days