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Boeing Co/The Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Monday, September 28th, 2026

1 Day

9.78

decreased by 0.24

1 Week

10.17

increased by 0.15

1 Month

10.52

increased by 0.50

Analysis last updated: Friday, September 25, 2026 at 11:59 PM UTC

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graph of Boeing Co/The 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 25, 2026

Model Insight

With persistence 0.999, illiquidity shocks have a half-life of 571 trading days (~2.3 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 ~571 days
ParamValuet-stat
ωconst1.0387
9.76***
αARCH0.0609
15.71***
βGARCH0.9379
237.68***
∑γi Spline Coefficients
K=1
γ1-0.0038
-3.06***

0.999

Persistence

571d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0387
9.76***
α

ARCH

Response to squared shocks

0.0609
15.71***
β

GARCH

Volatility persistence

0.9379
237.68***
∑γi Spline Coefficients
K=1
γ1-0.0038
-3.06***

Persistence:

0.999

Half-life:

571 days