V-Lab
SBA Communications Corp ILLIQ-MFMEM Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
77.13
1 Week
81.43
1 Month
83.56
Analysis last updated: Friday, September 18, 2026 at 10:51 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jun 16, 1999 to Sep 18, 2026Model Insight
Illiquidity shocks decay with a half-life of 55 trading days, meaning a shock loses half its impact after approximately 55 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
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| Param | Value | t-stat |
|---|---|---|
| mwindow | 81 | |
| αARCH | 0.0717 | 15.12*** |
| βGARCH | 0.9236 | 204.84*** |
| γleverage | -0.0156 | -1.37 |
| λ₁tau intercept | 0.0768 | 2.95*** |
| λ₂forecast adj. | 0.0032 | 0.66 |
| λ₃tau persistence | 0.9950 | 192.65*** |
0.988
Persistence55d
Half-lifeILLIQ-MFMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 81 | |
α ARCH Response to squared shocks | 0.0717 | 15.12*** |
β GARCH Volatility persistence | 0.9236 | 204.84*** |
γ leverage Additional response to negative shocks | -0.0156 | -1.37 |
λ₁ tau intercept Baseline long-term coefficient | 0.0768 | 2.95*** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0032 | 0.66 |
λ₃ tau persistence Long-term factor persistence | 0.9950 | 192.65*** |
Persistence:
0.988
Half-life:
55 days
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