V-Lab
SEI Select Small CAP ETF MF2-GARCH Volatility Analysis
Volatility prediction for Wednesday, September 30th, 2026
1 Day
15.32%
decreased by 0.32%
1 Week
15.33%
decreased by 0.31%
1 Month
15.60%
decreased by 0.04%
Analysis last updated: Tuesday, September 29, 2026 at 09:31 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 10, 2024 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 | 41 | |
| αARCH | 0.0000 | 0.00 |
| βGARCH | 0.8625 | 37.78*** |
| γleverage | 0.1133 | 4.80*** |
| λ₁tau intercept | 0.0816 | 2.07** |
| λ₂forecast adj. | 0.0912 | 2.39** |
| λ₃tau persistence | 0.8435 | 16.91*** |
0.919
Persistence8d
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 | 0.8625 | 37.78*** |
γ leverage Additional response to negative shocks | 0.1133 | 4.80*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0816 | 2.07** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0912 | 2.39** |
λ₃ tau persistence Long-term factor persistence | 0.8435 | 16.91*** |
Persistence:
0.919
Half-life:
8 days
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