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Grimoldi SA Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Wednesday, October 14th, 2026

1 Day

19,445.05

decreased by 1,926.09

1 Week

22,848.46

increased by 1,477.32

1 Month

20,925.21

decreased by 445.93

Analysis last updated: Wednesday, October 14, 2026 at 06:55 PM UTC

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Date Range:

from

10/13/2024

to

10/13/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Grimoldi SA ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Dec 11, 1995 to Oct 9, 2026

Model Insight

This model fits a time-varying baseline (a spline), so illiquidity mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 24 trading days.

μ

ILLIQ-SMEM Model

Tap to view equation

Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
ParamValuet-stat
ωconst1.8495
3.21***
αARCH0.1238
4.38***
βGARCH0.8483
21.08***
∑γi Spline Coefficients
K=10
γ10.5012
0.86
γ2-1.0546
-0.87
γ30.9442
0.80
γ4-0.4731
-0.53
γ5-0.6387
-0.99
γ62.5914
3.79***
γ7-3.3753
-3.70***
γ81.3870
1.62
γ90.0898
0.14
γ101.0211
1.82*

0.972

Persistence

24d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.8495
3.21***
α

ARCH

Response to squared shocks

0.1238
4.38***
β

GARCH

Volatility persistence

0.8483
21.08***
∑γi Spline Coefficients
K=10
γ10.5012
0.86
γ2-1.0546
-0.87
γ30.9442
0.80
γ4-0.4731
-0.53
γ5-0.6387
-0.99
γ62.5914
3.79***
γ7-3.3753
-3.70***
γ81.3870
1.62
γ90.0898
0.14
γ101.0211
1.82*

Persistence:

0.972

Half-life:

24 days