V-Lab
State Street Industrial Select Sector SPDR ETF MF2-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 29th, 2026
1 Day
16.11%
increased by 0.63%
1 Week
16.27%
increased by 0.79%
1 Month
16.73%
increased by 1.25%
Analysis last updated: Monday, September 28, 2026 at 09:57 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 22, 1998 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 | 71 | |
| αARCH | 0.0000 | 0.00 |
| βGARCH | 0.8999 | 92.64*** |
| γleverage | 0.1411 | 10.42*** |
| λ₁tau intercept | 0.0069 | 1.12 |
| λ₂forecast adj. | 0.0186 | 1.51 |
| λ₃tau persistence | 0.9764 | 60.39*** |
0.970
Persistence23d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 71 | |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.8999 | 92.64*** |
γ leverage Additional response to negative shocks | 0.1411 | 10.42*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0069 | 1.12 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0186 | 1.51 |
λ₃ tau persistence Long-term factor persistence | 0.9764 | 60.39*** |
Persistence:
0.970
Half-life:
23 days
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