Skip to main content
V-Lab

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

Volatility prediction for Wednesday, August 26th, 2026

1 Day

16.48%

decreased by 0.59%

1 Week

16.51%

decreased by 0.56%

1 Month

16.62%

decreased by 0.45%

Analysis last updated: Tuesday, August 25, 2026 at 09:47 PM UTC

Date Range:

from

to

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 Aug 21, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 200% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0209
22.39***
α

ARCH

Response to squared shocks

0.0347
12.41***
β

GARCH

Volatility persistence

0.9132
406.41***
γ

leverage

Additional response to negative shocks

0.0693
12.06***

Persistence:

0.983

Half-life:

39 days