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
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 14, 2011 to Aug 7, 2026Model 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
| Parameter | Value | t-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
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