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

Volatility prediction for Monday, November 2nd, 2026

1 Day

40.34%

increased by 13.01%

1 Week

40.10%

increased by 12.77%

1 Month

39.17%

increased by 11.84%

Analysis last updated: Friday, October 30, 2026 at 11:02 PM UTC

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Date Range:

from

10/30/2024

to

10/30/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of State Street Technology 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 30, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 386% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 386% more than positive returns
ParamValuet-stat
ωconst0.0290
4.20***
αARCH0.0308
2.45**
βGARCH0.8991
97.88***
γleverage0.1190
4.69***

0.989

Persistence

65d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0290
4.20***
α

ARCH

Response to squared shocks

0.0308
2.45**
β

GARCH

Volatility persistence

0.8991
97.88***
γ

leverage

Additional response to negative shocks

0.1190
4.69***

Persistence:

0.989

Half-life:

65 days