V-Lab
American Tower Corp ILLIQ-MFMEM Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
27.03
1 Week
29.20
1 Month
30.19
Analysis last updated: Friday, September 18, 2026 at 11:07 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Feb 27, 1998 to Sep 18, 2026Model Insight
Illiquidity shocks decay with a half-life of 60 trading days, meaning a shock loses half its impact after approximately 60 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.
ILLIQ-MFMEM Model
Tap to view equation
| Param | Value | t-stat |
|---|---|---|
| mwindow | 121 | |
| αARCH | 0.0737 | 16.51*** |
| βGARCH | 0.9182 | 239.18*** |
| γleverage | -0.0067 | -0.71 |
| λ₁tau intercept | 0.0333 | 4.00*** |
| λ₂forecast adj. | 0.0000 | 0.00 |
| λ₃tau persistence | 0.9988 | 215.11*** |
0.989
Persistence60d
Half-lifeILLIQ-MFMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 121 | |
α ARCH Response to squared shocks | 0.0737 | 16.51*** |
β GARCH Volatility persistence | 0.9182 | 239.18*** |
γ leverage Additional response to negative shocks | -0.0067 | -0.71 |
λ₁ tau intercept Baseline long-term coefficient | 0.0333 | 4.00*** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0000 | 0.00 |
λ₃ tau persistence Long-term factor persistence | 0.9988 | 215.11*** |
Persistence:
0.989
Half-life:
60 days
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