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State Street Financial Select Sector SPDR ETF MEM Volatility Analysis

Volatility prediction for Monday, October 12th, 2026

1 Day

14.33%

decreased by 0.31%

1 Week

14.90%

increased by 0.26%

1 Month

16.81%

increased by 2.17%

Analysis last updated: Saturday, October 10, 2026 at 02:06 AM UTC

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Date Range:

from

10/09/2024

to

10/09/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of State Street Financial Select Sector SPDR ETF MEM

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

Volatility shocks decay with a half-life of 55 trading days, meaning a shock loses half its impact after approximately 55 days.

μ

MEM Model

Tap to view equation

Shock decay: Shocks decay with a 55-day half-life
ParamValuet-stat
ωconst0.0432
2.32**
αARCH0.2623
12.18***
βGARCH0.7252
46.29***

0.987

Persistence

55d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0432
2.32**
α

ARCH

Response to squared shocks

0.2623
12.18***
β

GARCH

Volatility persistence

0.7252
46.29***

Persistence:

0.987

Half-life:

55 days