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State Street Utilities Select Sector SPDR ETF GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, October 27th, 2026

1 Day

16.30%

decreased by 0.58%

1 Week

16.34%

decreased by 0.54%

1 Month

16.47%

decreased by 0.41%

Analysis last updated: Monday, October 26, 2026 at 10:00 PM UTC

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Date Range:

from

10/26/2024

to

10/26/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of State Street Utilities Select Sector SPDR ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 22, 1998 to Oct 23, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 201% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 201% more than positive returns
ParamValuet-stat
ωconst0.0207
5.57***
αARCH0.0342
3.10***
βGARCH0.9141
102.40***
γleverage0.0689
3.03***

0.983

Persistence

40d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0207
5.57***
α

ARCH

Response to squared shocks

0.0342
3.10***
β

GARCH

Volatility persistence

0.9141
102.40***
γ

leverage

Additional response to negative shocks

0.0689
3.03***

Persistence:

0.983

Half-life:

40 days