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Info Yatirim As Spline ILLIQ Liquidity Analysis

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

Illiquidity prediction for Monday, September 21st, 2026

1 Day

12,903.86

increased by 11,050.06

1 Week

3,218.31

increased by 1,364.51

1 Month

945.77

decreased by 908.03

Analysis last updated: Sunday, September 20, 2026 at 02:17 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Info Yatirim As ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Oct 27, 2011 to Sep 18, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 14146 trading days (~56.1 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

ILLIQ-SMEM Model

Tap to view equation

High persistence: persistence 1.000, shock half-life ~14146 days
ParamValuet-stat
ωconst0.8320
4.10***
αARCH0.3144
1.67*
βGARCH0.6855
3.64***
γi Spline Coefficients
K=9
γ1-1.9836
-2.69***
γ22.5569
2.52**
γ3-1.7571
-1.92*
γ4-6.2623
-0.43
γ524.7436
0.57
γ6-30.1373
-0.61
γ719.0231
0.67
γ8-9.5708
-0.79
γ95.1096
1.15

1.000

Persistence

14146d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.8320
4.10***
α

ARCH

Response to squared shocks

0.3144
1.67*
β

GARCH

Volatility persistence

0.6855
3.64***
γi Spline Coefficients
K=9
γ1-1.9836
-2.69***
γ22.5569
2.52**
γ3-1.7571
-1.92*
γ4-6.2623
-0.43
γ524.7436
0.57
γ6-30.1373
-0.61
γ719.0231
0.67
γ8-9.5708
-0.79
γ95.1096
1.15

Persistence:

1.000

Half-life:

14146 days