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State Street Technology Select Sector SPDR ETF MF2-GARCH Volatility Analysis

Volatility prediction for Friday, October 23rd, 2026

1 Day

35.12%

increased by 7.10%

1 Week

34.05%

increased by 6.03%

1 Month

31.35%

increased by 3.33%

Analysis last updated: Thursday, October 22, 2026 at 09:42 PM UTC

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Date Range:

from

10/22/2024

to

10/22/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of State Street Technology 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 Oct 16, 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

Tap to view equation

Leverage: volatility responds almost entirely to negative shocks
ParamValuet-stat
mwindow31
αARCH0.0000
0.00
βGARCH0.8287
47.40***
γleverage0.1869
10.70***
λ₁tau intercept0.0108
1.82*
λ₂forecast adj.0.0522
3.00***
λ₃tau persistence0.9427
49.86***

0.922

Persistence

9d

Half-life
σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

31
α

ARCH

Response to squared shocks

0.0000
0.00
β

GARCH

Volatility persistence

0.8287
47.40***
γ

leverage

Additional response to negative shocks

0.1869
10.70***
λ₁

tau intercept

Baseline long-term coefficient

0.0108
1.82*
λ₂

forecast adj.

Forecast performance sensitivity

0.0522
3.00***
λ₃

tau persistence

Long-term factor persistence

0.9427
49.86***

Persistence:

0.922

Half-life:

9 days