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V-Lab

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

Volatility prediction for Monday, August 10th, 2026

1 Day

26.83%

decreased by 1.30%

1 Week

26.76%

decreased by 1.37%

1 Month

26.47%

decreased by 1.66%

Analysis last updated: Saturday, August 8, 2026 at 09:08 AM UTC

Date Range:

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to

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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 7, 2026

Model Insight

With persistence 0.992, volatility shocks have a half-life of 86 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 5.71 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

1.8729
4.84***
α

ARCH

Response to squared shocks

0.0793
36.54***
β

GARCH

Volatility persistence

0.9920
636.28***
ν

DF

Student-t tail thickness

5.7091
8.49***

Persistence:

0.992

Half-life:

86 days