V-Lab
Invesco S&P 500 Quality ETF MF2-GARCH Volatility Analysis
Volatility prediction for Wednesday, September 9th, 2026
1 Day
13.33%
decreased by 0.29%
1 Week
13.93%
increased by 0.31%
1 Month
15.19%
increased by 1.57%
Analysis last updated: Tuesday, September 8, 2026 at 10:43 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 6, 2005 to Sep 4, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
MF2-GARCH Model
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Leverage: volatility responds almost entirely to negative shocks
| Param | Value | t-stat |
|---|---|---|
| mwindow | 61 | |
| αARCH | 0.0003 | 0.01 |
| βGARCH | 0.8170 | 36.23*** |
| γleverage | 0.2451 | 8.18*** |
| λ₁tau intercept | 0.0175 | 1.68* |
| λ₂forecast adj. | 0.1085 | 2.37** |
| λ₃tau persistence | 0.8771 | 17.18*** |
0.940
Persistence11d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 61 | |
α ARCH Response to squared shocks | 0.0003 | 0.01 |
β GARCH Volatility persistence | 0.8170 | 36.23*** |
γ leverage Additional response to negative shocks | 0.2451 | 8.18*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0175 | 1.68* |
λ₂ forecast adj. Forecast performance sensitivity | 0.1085 | 2.37** |
λ₃ tau persistence Long-term factor persistence | 0.8771 | 17.18*** |
Persistence:
0.940
Half-life:
11 days
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