Simon Property Group Inc Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Wednesday, October 28th, 2026
1 Day
35.92
decreased by 1.39
1 Week
37.23
decreased by 0.08
1 Month
29.26
decreased by 8.05
Analysis last updated: Tuesday, October 27, 2026 at 10:36 PM UTC
Press Delete or Backspace to remove this series.
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Dec 14, 1993 to Oct 23, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 646 trading days (~2.6 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 0.999, shock half-life ~646 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1410 | 8.33*** |
| αARCH | 0.0536 | 12.08*** |
| βGARCH | 0.9453 | 208.96*** |
Spline Coefficients
K=2
| γ1 | -0.0069 | -1.58 |
| γ2 | 0.0157 | 1.92* |
0.999
Persistence646d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1410 | 8.33*** |
α ARCH Response to squared shocks | 0.0536 | 12.08*** |
β GARCH Volatility persistence | 0.9453 | 208.96*** |
Spline Coefficients
K=2
| γ1 | -0.0069 | -1.58 |
| γ2 | 0.0157 | 1.92* |
Persistence:
0.999
Half-life:
646 days
Other Simon Property Group Inc Analyses
Other Spline ILLIQ Analyses on Real Estate