V-Lab
Invesco QQQ LOW Vltility ETF Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, July 28th, 2026
1 Day
14.35%
increased by 0.03%
1 Week
14.16%
decreased by 0.16%
1 Month
13.95%
decreased by 0.37%
Analysis last updated: Tuesday, July 28, 2026 at 02:20 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 4, 2024 to Jul 24, 2026Model Insight
This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 3 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7447 | 3.59*** |
α ARCH Response to squared shocks | 0.0403 | 0.66 |
β GARCH Volatility persistence | 0.7216 | 3.02*** |
Spline Coefficients
K=3
| γ1 | -8.7598 | -1.95* |
| γ2 | 14.0487 | 2.17** |
| γ3 | -7.0815 | -2.50** |
Persistence:
0.762
Half-life:
3 days
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