V-Lab
Crown Castle Inc Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
50.43
decreased by 2.72
1 Week
56.83
increased by 3.68
1 Month
58.04
increased by 4.89
Analysis last updated: Friday, September 18, 2026 at 11:16 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Aug 18, 1998 to Sep 18, 2026Model Insight
With persistence 0.991, illiquidity shocks have a half-life of 74 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
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High persistence: persistence 0.991, shock half-life ~74 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1941 | 4.27*** |
| αARCH | 0.0794 | 13.66*** |
| βGARCH | 0.9114 | 137.65*** |
Spline Coefficients
K=4
| γ1 | -0.0217 | -1.18 |
| γ2 | 0.0264 | 1.00 |
| γ3 | 0.0095 | 0.63 |
| γ4 | -0.0166 | -0.96 |
0.991
Persistence74d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1941 | 4.27*** |
α ARCH Response to squared shocks | 0.0794 | 13.66*** |
β GARCH Volatility persistence | 0.9114 | 137.65*** |
Spline Coefficients
K=4
| γ1 | -0.0217 | -1.18 |
| γ2 | 0.0264 | 1.00 |
| γ3 | 0.0095 | 0.63 |
| γ4 | -0.0166 | -0.96 |
Persistence:
0.991
Half-life:
74 days
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