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V-Lab

Global X Nasdaq-100 Cove ETF GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

17.38%

decreased by 1.14%

1 Week

17.43%

decreased by 1.09%

1 Month

17.65%

decreased by 0.87%

Analysis last updated: Saturday, August 22, 2026 at 01:53 PM UTC

Date Range:

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to

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2Y ·

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graph of Global X Nasdaq-100 Cove ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Sep 14, 2011 to Aug 21, 2026

Model Insight

Volatility shocks decay with a half-life of 63 trading days, meaning a shock loses half its impact after approximately 63 days. Returns follow a Student-t distribution with v = 5.68 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.5624
5.05***
α

ARCH

Response to squared shocks

0.0799
31.57***
β

GARCH

Volatility persistence

0.9890
471.18***
ν

DF

Student-t tail thickness

5.6822
7.47***

Persistence:

0.989

Half-life:

63 days