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General Motors Co Asymmetric ILLIQ Liquidity Analysis

Illiquidity prediction for Wednesday, August 12th, 2026

1 Day

25.61

decreased by 0.57

1 Week

26.46

increased by 0.28

1 Month

26.80

increased by 0.62

Analysis last updated: Tuesday, August 11, 2026 at 10:19 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of General Motors Co ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Nov 18, 2010 to Aug 7, 2026

Model Insight

With persistence 0.991, illiquidity shocks have a half-life of 78 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: illiquidity responds almost entirely to negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.3183
10.35***
α

ARCH

Response to squared shocks

0.0127
6.22***
β

GARCH

Volatility persistence

0.9384
550.72***
γ

leverage

Additional response to negative shocks

0.0801
17.32***

Persistence:

0.991

Half-life:

78 days