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SBA Communications Corp Spline ILLIQ Liquidity Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Illiquidity prediction for Monday, September 21st, 2026

1 Day

79.91

decreased by 3.79

1 Week

85.94

increased by 2.24

1 Month

88.64

increased by 4.94

Analysis last updated: Friday, September 18, 2026 at 10:51 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of SBA Communications Corp ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jun 16, 1999 to Sep 18, 2026

Model Insight

Estimated persistence of 1.000 is at or above 1 (non-stationary): illiquidity shocks do not decay and the long-run level is undefined, so long-horizon forecasts should be treated with caution.

μ

ILLIQ-SMEM Model

Tap to view equation

High persistence: persistence 1.000 ≥ 1, shocks do not decay
ParamValuet-stat
ωconst1.2125
αARCH0.0932
βGARCH0.9068
γi Spline Coefficients
K=2
γ10.0238
γ20.0177

1.000

Persistence

-

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.2125
α

ARCH

Response to squared shocks

0.0932
β

GARCH

Volatility persistence

0.9068
γi Spline Coefficients
K=2
γ10.0238
γ20.0177

Persistence:

1.000

Half-life:

-