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V-Lab
V-Lab

SLW Short Duration Income ETF GJR-GARCH Volatility Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Volatility prediction for Tuesday, September 8th, 2026

1 Day

1.95%

unchanged at 0.00%

1 Week

1.96%

increased by 0.01%

1 Month

1.99%

increased by 0.04%

Analysis last updated: Saturday, September 5, 2026 at 02:26 AM UTC

Date Range:

from

to

6M ·

All

graph of SLW Short Duration Income ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 5, 2025 to Sep 4, 2026
Hessian SE

Model Insight

With persistence 1.000, volatility shocks have a half-life of 26659 trading days (~105.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

σ

GJR-GARCH Model

Tap to view equation

High persistence: persistence 1.000, shock half-life ~26659 days
ParamValuet-stat
ωconst0.0001
0.00
αARCH0.0000
0.00
βGARCH1.0000
0.01
γleverage0.0000
0.00

1.000

Persistence

26659d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0001
0.00
α

ARCH

Response to squared shocks

0.0000
0.00
β

GARCH

Volatility persistence

1.0000
0.01
γ

leverage

Additional response to negative shocks

0.0000
0.00

Persistence:

1.000

Half-life:

26659 days