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General Motors Co Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Tuesday, October 13th, 2026

1 Day

29.84

decreased by 1.50

1 Week

31.98

increased by 0.64

1 Month

30.15

decreased by 1.19

Analysis last updated: Monday, October 12, 2026 at 09:48 PM UTC

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Date Range:

from

10/12/2024

to

10/12/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of General Motors Co ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Nov 18, 2010 to Oct 9, 2026

Model Insight

With persistence 0.996, illiquidity shocks have a half-life of 163 trading days (~0.6 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 0.996, shock half-life ~163 days
ParamValuet-stat
ωconst1.1596
7.56***
αARCH0.0695
10.05***
βGARCH0.9263
128.76***
∑γi Spline Coefficients
K=1
γ1-0.0110
-2.34**

0.996

Persistence

163d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.1596
7.56***
α

ARCH

Response to squared shocks

0.0695
10.05***
β

GARCH

Volatility persistence

0.9263
128.76***
∑γi Spline Coefficients
K=1
γ1-0.0110
-2.34**

Persistence:

0.996

Half-life:

163 days