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V-Lab

SEI Select Small CAP ETF GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, September 9th, 2026

1 Day

19.06%

unchanged at 0.00%

1 Week

19.37%

increased by 0.31%

1 Month

20.20%

increased by 1.14%

Analysis last updated: Tuesday, September 8, 2026 at 10:28 PM UTC

Date Range:

from

to

6M ·

1Y ·

All

graph of SEI Select Small CAP ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 10, 2024 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 11-day half-life
ParamValuet-stat
ωconst0.1128
0.64
αARCH0.0000
0.00
βGARCH0.8862
10.50***
γleverage0.1064
0.61

0.939

Persistence

11d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1128
0.64
α

ARCH

Response to squared shocks

0.0000
0.00
β

GARCH

Volatility persistence

0.8862
10.50***
γ

leverage

Additional response to negative shocks

0.1064
0.61

Persistence:

0.939

Half-life:

11 days