V-Lab
SEI Select Small CAP ETF MF2-GARCH Volatility Analysis
Volatility prediction for Wednesday, September 9th, 2026
1 Day
17.31%
decreased by 0.02%
1 Week
17.48%
increased by 0.15%
1 Month
18.08%
increased by 0.75%
Analysis last updated: Tuesday, September 8, 2026 at 10:28 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 10, 2024 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 | 41 | |
| αARCH | 0.0000 | 0.00 |
| βGARCH | 0.8792 | 38.11*** |
| γleverage | 0.1116 | 4.95*** |
| λ₁tau intercept | 0.1587 | 1.99** |
| λ₂forecast adj. | 0.0345 | 0.99 |
| λ₃tau persistence | 0.8581 | 11.87*** |
0.935
Persistence10d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 41 | |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.8792 | 38.11*** |
γ leverage Additional response to negative shocks | 0.1116 | 4.95*** |
λ₁ tau intercept Baseline long-term coefficient | 0.1587 | 1.99** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0345 | 0.99 |
λ₃ tau persistence Long-term factor persistence | 0.8581 | 11.87*** |
Persistence:
0.935
Half-life:
10 days
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