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Wal-Mart Stores Inc Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Tuesday, September 22nd, 2026

1 Day

4.06

decreased by 0.05

1 Week

4.21

increased by 0.10

1 Month

4.27

increased by 0.16

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-SMEM

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 533 trading days (~2.1 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

ILLIQ-SMEM Model

Tap to view equation

High persistence: persistence 0.999, shock half-life ~533 days
ParamValuet-stat
ωconst1.0367
9.17***
αARCH0.0357
11.87***
βGARCH0.9630
312.77***
γi Spline Coefficients
K=1
γ1-0.0009
-1.07

0.999

Persistence

533d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0367
9.17***
α

ARCH

Response to squared shocks

0.0357
11.87***
β

GARCH

Volatility persistence

0.9630
312.77***
γi Spline Coefficients
K=1
γ1-0.0009
-1.07

Persistence:

0.999

Half-life:

533 days