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V-Lab

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

Volatility prediction for Wednesday, July 22nd, 2026

1 Day

20.31%

decreased by 1.47%

1 Week

20.47%

decreased by 1.31%

1 Month

21.03%

decreased by 0.75%

Analysis last updated: Tuesday, July 21, 2026 at 09:54 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of State Street Materials 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 Jul 17, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 98% more than equivalent positive returns.

μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0467
30.54***
α

ARCH

Response to squared shocks

0.1386
32.74***
β

GARCH

Volatility persistence

0.7732
240.51***
γ

leverage

Additional response to negative shocks

0.1355
16.73***

Persistence:

0.980

Half-life:

34 days