V-Lab
Global X Nasdaq-100 Cove ETF AGARCH Volatility Analysis
Volatility prediction for Monday, August 10th, 2026
1 Day
25.71%
decreased by 1.77%
1 Week
25.20%
decreased by 2.28%
1 Month
23.49%
decreased by 3.99%
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
The news-impact curve is shifted (γ = 0.51) so that negative returns raise next-day volatility more than positive returns of the same size. The gap is largest for small shocks and narrows for larger ones.
σ
AGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0123 | 3.42*** |
α ARCH Response to squared shocks | 0.0950 | 29.59*** |
β GARCH Volatility persistence | 0.8705 | 263.31*** |
γ leverage Additional response to negative shocks | 0.5107 | 13.01*** |
Persistence:
0.966
Half-life:
20 days
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