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Wal-Mart Stores Inc Asymmetric ILLIQ Liquidity Analysis

Illiquidity prediction for Tuesday, September 22nd, 2026

1 Day

4.48

decreased by 0.09

1 Week

4.63

increased by 0.06

1 Month

4.72

increased by 0.15

Analysis last updated: Monday, September 21, 2026 at 09:34 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Wal-Mart Stores Inc ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 18, 2026

Model Insight

With persistence 0.999, illiquidity shocks have a half-life of 812 trading days (~3.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: Illiquidity rises 114% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

High persistence: persistence 0.999, shock half-life ~812 daysAsymmetry: Illiquidity rises 114% more after negative returns
ParamValuet-stat
ωconst0.0213
1.96**
αARCH0.0224
5.48***
βGARCH0.9640
334.60***
γleverage0.0255
3.75***

0.999

Persistence

812d

Half-life
μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0213
1.96**
α

ARCH

Response to squared shocks

0.0224
5.48***
β

GARCH

Volatility persistence

0.9640
334.60***
γ

leverage

Additional response to negative shocks

0.0255
3.75***

Persistence:

0.999

Half-life:

812 days