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Howmet Aerospace Inc Asymmetric ILLIQ Liquidity Analysis

Illiquidity prediction for Monday, September 21st, 2026

1 Day

25.98

decreased by 0.83

1 Week

27.09

increased by 0.28

1 Month

29.24

increased by 2.43

Analysis last updated: Friday, September 18, 2026 at 11:31 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Howmet Aerospace 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 1201 trading days (~4.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: Illiquidity rises 161% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

High persistence: persistence 0.999, shock half-life ~1201 daysAsymmetry: Illiquidity rises 161% more after negative returns
ParamValuet-stat
ωconst0.2282
1.89*
αARCH0.0320
6.27***
βGARCH0.9416
253.80***
γleverage0.0516
5.91***

0.999

Persistence

1201d

Half-life
μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.2282
1.89*
α

ARCH

Response to squared shocks

0.0320
6.27***
β

GARCH

Volatility persistence

0.9416
253.80***
γ

leverage

Additional response to negative shocks

0.0516
5.91***

Persistence:

0.999

Half-life:

1201 days