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Simon Property Group Inc ILLIQ-MFMEM Liquidity Analysis

Illiquidity prediction for Monday, September 21st, 2026

1 Day

28.71

decreased by 1.37

1 Week

29.97

decreased by 0.11

1 Month

34.58

increased by 4.50

Analysis last updated: Friday, September 18, 2026 at 11:48 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Simon Property Group Inc ILLIQ-MFMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Dec 14, 1993 to Sep 18, 2026

Model Insight

Illiquidity shocks decay with a half-life of 6 trading days, meaning a shock loses half its impact after approximately 6 days. This multi-frequency model splits illiquidity into a fast short-run component and a slow-moving long-run level that drifts over the sample rather than a constant baseline.

μ

ILLIQ-MFMEM Model

Tap to view equation

Shock decay: Shocks decay with a 6-day half-life
ParamValuet-stat
mwindow61
αARCH0.0715
10.21***
βGARCH0.8554
54.23***
γleverage-0.0715
-3.14***
λ₁tau intercept0.2149
2.02**
λ₂forecast adj.0.1066
2.85***
λ₃tau persistence0.8881
22.88***

0.891

Persistence

6d

Half-life
μ

ILLIQ-MFMEM Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

61
α

ARCH

Response to squared shocks

0.0715
10.21***
β

GARCH

Volatility persistence

0.8554
54.23***
γ

leverage

Additional response to negative shocks

-0.0715
-3.14***
λ₁

tau intercept

Baseline long-term coefficient

0.2149
2.02**
λ₂

forecast adj.

Forecast performance sensitivity

0.1066
2.85***
λ₃

tau persistence

Long-term factor persistence

0.8881
22.88***

Persistence:

0.891

Half-life:

6 days