V-Lab
State Street Consumer Discretionary Select Sector SPDR ETF MF2-GARCH Volatility Analysis
Volatility prediction for Thursday, September 10th, 2026
1 Day
20.97%
increased by 0.86%
1 Week
20.91%
increased by 0.80%
1 Month
20.87%
increased by 0.76%
Analysis last updated: Wednesday, September 9, 2026 at 09:41 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 22, 1998 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 | 0.0000 | 0.00 |
| βGARCH | 0.8624 | 65.12*** |
| γleverage | 0.1511 | 10.01*** |
| λ₁tau intercept | 0.0467 | 2.06** |
| λ₂forecast adj. | 0.3398 | 3.49*** |
| λ₃tau persistence | 0.6339 | 6.15*** |
0.938
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 | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.8624 | 65.12*** |
γ leverage Additional response to negative shocks | 0.1511 | 10.01*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0467 | 2.06** |
λ₂ forecast adj. Forecast performance sensitivity | 0.3398 | 3.49*** |
λ₃ tau persistence Long-term factor persistence | 0.6339 | 6.15*** |
Persistence:
0.938
Half-life:
11 days
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