Skip to main content
V-Lab
V-Lab

State Street Technology Select Sector SPDR ETF Asy. MEM Volatility Analysis

Volatility prediction for Thursday, October 15th, 2026

1 Day

24.41%

increased by 5.40%

1 Week

24.40%

increased by 5.39%

1 Month

24.37%

increased by 5.36%

Analysis last updated: Wednesday, October 14, 2026 at 10:39 PM UTC

Press Delete or Backspace to remove this series.
Date Range:

from

10/14/2024

to

10/14/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of State Street Technology Select Sector SPDR ETF AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 22, 1998 to Oct 9, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 88% more than equivalent positive returns.

μ

AMEM Model

Tap to view equation

Leverage: Negative returns increase volatility 88% more than positive returns
ParamValuet-stat
ωconst0.0467
6.54***
αARCH0.1516
7.83***
βGARCH0.7615
60.97***
γleverage0.1334
3.96***

0.980

Persistence

34d

Half-life
μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0467
6.54***
α

ARCH

Response to squared shocks

0.1516
7.83***
β

GARCH

Volatility persistence

0.7615
60.97***
γ

leverage

Additional response to negative shocks

0.1334
3.96***

Persistence:

0.980

Half-life:

34 days