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Simon Property Group Inc Asymmetric ILLIQ Liquidity Analysis

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

Illiquidity prediction for Wednesday, October 28th, 2026

1 Day

35.55

decreased by 1.11

1 Week

37.02

increased by 0.36

1 Month

30.91

decreased by 5.75

Analysis last updated: Tuesday, October 27, 2026 at 10:36 PM UTC

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Date Range:

from

10/27/2024

to

10/27/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Simon Property Group Inc ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Dec 14, 1993 to Oct 23, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 17328 trading days (~68.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: Illiquidity rises 70% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

High persistence: persistence 1.000, shock half-life ~17328 daysAsymmetry: Illiquidity rises 70% more after negative returns
ParamValuet-stat
ωconst0.1258
1.61
αARCH0.0382
6.39***
βGARCH0.9485
229.83***
γleverage0.0266
3.14***

1.000

Persistence

17328d

Half-life
μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1258
1.61
α

ARCH

Response to squared shocks

0.0382
6.39***
β

GARCH

Volatility persistence

0.9485
229.83***
γ

leverage

Additional response to negative shocks

0.0266
3.14***

Persistence:

1.000

Half-life:

17328 days