Shift4 Payments Inc Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, November 10th, 2026
1 Day
290.77
decreased by 11.06
1 Week
311.05
increased by 9.22
1 Month
298.30
decreased by 3.53
Analysis last updated: Monday, November 9, 2026 at 10:41 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jun 5, 2020 to Nov 6, 2026Model Insight
With persistence 0.995, illiquidity shocks have a half-life of 144 trading days (~0.6 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 0.995, shock half-life ~144 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.0963 | 7.26*** |
| αARCH | 0.0802 | 8.01*** |
| βGARCH | 0.9150 | 88.62*** |
Spline Coefficients
K=1
| γ1 | -0.0176 | -0.31 |
0.995
Persistence144d
Half-lifeμ
ILLIQ-SMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0963 | 7.26*** |
α ARCH Response to squared shocks | 0.0802 | 8.01*** |
β GARCH Volatility persistence | 0.9150 | 88.62*** |
Spline Coefficients
K=1
| γ1 | -0.0176 | -0.31 |
Persistence:
0.995
Half-life:
144 days
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