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V-Lab

SEI Select Small CAP ETF Asy. MEM Volatility Analysis

Volatility prediction for Monday, October 19th, 2026

1 Day

21.43%

increased by 4.62%

1 Week

21.25%

increased by 4.44%

1 Month

20.83%

increased by 4.02%

Analysis last updated: Friday, October 16, 2026 at 10:11 PM UTC

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Date Range:

from

10/16/2024

to

10/16/2026

6M ·

1Y ·

2Y ·

All

graph of SEI Select Small CAP ETF AMEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 11, 2024 to Oct 16, 2026

Model Insight

Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.

μ

AMEM Model

Tap to view equation

Shock decay: Shocks decay with a 7-day half-life
ParamValuet-stat
ωconst0.1480
2.30**
αARCH0.0171
0.61
βGARCH0.7943
17.09***
γleverage0.1965
1.70*

0.910

Persistence

7d

Half-life
μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1480
2.30**
α

ARCH

Response to squared shocks

0.0171
0.61
β

GARCH

Volatility persistence

0.7943
17.09***
γ

leverage

Additional response to negative shocks

0.1965
1.70*

Persistence:

0.910

Half-life:

7 days