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SEI Select Small CAP ETF Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Tuesday, November 10th, 2026

1 Day

26.46%

increased by 2.12%

1 Week

24.91%

increased by 0.57%

1 Month

21.74%

decreased by 2.60%

Analysis last updated: Monday, November 9, 2026 at 10:27 PM UTC

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Date Range:

from

11/09/2024

to

11/09/2026

6M ·

1Y ·

2Y ·

All

graph of SEI Select Small CAP ETF S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 10, 2024 to Nov 6, 2026

Model Insight

This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 5 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

Time-varying baseline: volatility reverts to a slowly-shifting spline trend
ParamValuet-stat
ωconst1.2012
4.99***
αARCH0.0632
1.22
βGARCH0.8056
6.94***
∑γi Spline Coefficients
K=1
γ10.1125
1.26

0.869

Persistence

5d

Half-life
τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.2012
4.99***
α

ARCH

Response to squared shocks

0.0632
1.22
β

GARCH

Volatility persistence

0.8056
6.94***
∑γi Spline Coefficients
K=1
γ10.1125
1.26

Persistence:

0.869

Half-life:

5 days