V-Lab
Shift4 Payments Inc Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 29th, 2026
1 Day
428.40
increased by 29.21
1 Week
428.83
increased by 29.64
1 Month
467.54
increased by 68.35
Analysis last updated: Monday, September 28, 2026 at 09:43 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jun 5, 2020 to Sep 25, 2026Model Insight
With persistence 0.996, illiquidity shocks have a half-life of 155 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 233% more after negative returns
μ
ILLIQ-AMEM Model
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High persistence: persistence 0.996, shock half-life ~155 daysAsymmetry: Illiquidity rises 233% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1987 | 0.99 |
| αARCH | 0.0294 | 1.94* |
| βGARCH | 0.9318 | 100.28*** |
| γleverage | 0.0685 | 2.24** |
0.996
Persistence155d
Half-lifeμ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1987 | 0.99 |
α ARCH Response to squared shocks | 0.0294 | 1.94* |
β GARCH Volatility persistence | 0.9318 | 100.28*** |
γ leverage Additional response to negative shocks | 0.0685 | 2.24** |
Persistence:
0.996
Half-life:
155 days
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