V-Lab
SBA Communications Corp Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
82.98
decreased by 1.27
1 Week
85.68
increased by 1.43
1 Month
83.06
decreased by 1.19
Analysis last updated: Friday, September 18, 2026 at 10:50 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
With persistence 0.997, illiquidity shocks have a half-life of 200 trading days (~0.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 141% more after negative returns
μ
ILLIQ-AMEM Model
Tap to view equation
High persistence: persistence 0.997, shock half-life ~200 daysAsymmetry: Illiquidity rises 141% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.6661 | 3.34*** |
| αARCH | 0.0414 | 6.04*** |
| βGARCH | 0.9261 | 192.25*** |
| γleverage | 0.0582 | 5.41*** |
0.997
Persistence200d
Half-lifeμ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.6661 | 3.34*** |
α ARCH Response to squared shocks | 0.0414 | 6.04*** |
β GARCH Volatility persistence | 0.9261 | 192.25*** |
γ leverage Additional response to negative shocks | 0.0582 | 5.41*** |
Persistence:
0.997
Half-life:
200 days
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