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Tenaris SA Asymmetric ILLIQ Liquidity Analysis

Illiquidity prediction for Monday, September 21st, 2026

1 Day

504.14

decreased by 31.37

1 Week

537.58

increased by 2.07

1 Month

405.84

decreased by 129.67

Analysis last updated: Saturday, September 19, 2026 at 11:34 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Tenaris SA ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Dec 17, 2002 to Sep 18, 2026

Model Insight

With persistence 0.997, illiquidity shocks have a half-life of 206 trading days (~0.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: Illiquidity rises 244% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

High persistence: persistence 0.997, shock half-life ~206 daysAsymmetry: Illiquidity rises 244% more after negative returns
ParamValuet-stat
ωconst1.7385
2.26**
αARCH0.0310
3.92***
βGARCH0.9278
147.11***
γleverage0.0756
4.01***

0.997

Persistence

206d

Half-life
μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.7385
2.26**
α

ARCH

Response to squared shocks

0.0310
3.92***
β

GARCH

Volatility persistence

0.9278
147.11***
γ

leverage

Additional response to negative shocks

0.0756
4.01***

Persistence:

0.997

Half-life:

206 days