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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

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graph of State Street Industrial Select Sector SPDR ETF MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 22, 1998 to Sep 25, 2026

Model 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
ParamValuet-stat
mwindow71
αARCH0.0000
0.00
βGARCH0.8999
92.64***
γleverage0.1411
10.42***
λ₁tau intercept0.0069
1.12
λ₂forecast adj.0.0186
1.51
λ₃tau persistence0.9764
60.39***

0.970

Persistence

23d

Half-life
σ

MF2-GARCH Model

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ParameterValuet-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