V-Lab
Invesco S&P 500 Quality ETF MF2-GARCH Volatility Analysis
Volatility prediction for Wednesday, September 30th, 2026
1 Day
11.69%
decreased by 0.52%
1 Week
12.21%
increased by 0.00%
1 Month
13.71%
increased by 1.50%
Analysis last updated: Tuesday, September 29, 2026 at 09:57 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 6, 2005 to Sep 25, 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 | 0.0001 | 0.00 |
| βGARCH | 0.8169 | 36.48*** |
| γleverage | 0.2443 | 8.23*** |
| λ₁tau intercept | 0.0198 | 1.71* |
| λ₂forecast adj. | 0.1216 | 2.47** |
| λ₃tau persistence | 0.8618 | 15.62*** |
0.939
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 | 0.0001 | 0.00 |
β GARCH Volatility persistence | 0.8169 | 36.48*** |
γ leverage Additional response to negative shocks | 0.2443 | 8.23*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0198 | 1.71* |
λ₂ forecast adj. Forecast performance sensitivity | 0.1216 | 2.47** |
λ₃ tau persistence Long-term factor persistence | 0.8618 | 15.62*** |
Persistence:
0.939
Half-life:
11 days
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