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V-Lab

Howmet Aerospace Inc Spline ILLIQ Liquidity Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Liquidity prediction for Monday, July 20th, 2026

1 Day

27.06

decreased by 1.12

1 Week

26.28

decreased by 1.90

1 Month

26.31

decreased by 1.87

Analysis last updated: Friday, July 17, 2026 at 11:01 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Howmet Aerospace Inc ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's liquidity

Liquidity Forecast

How liquidity evolves over time

Parameter Estimates

Jan 2, 1990 to Jul 17, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 173286 trading days (~687.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0955
5.44***
α

ARCH

Response to squared shocks

0.0711
0.34
β

GARCH

Volatility persistence

0.9289
4.39***
γi Spline Coefficients
K=1
γ1-0.0080
-0.19

Persistence:

1.000

Half-life:

173286 days