V-Lab
Shift4 Payments Inc Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 8th, 2026
1 Day
437.05
decreased by 17.89
1 Week
465.84
increased by 10.90
1 Month
525.74
increased by 70.80
Analysis last updated: Friday, September 4, 2026 at 10:50 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jun 5, 2020 to Sep 4, 2026Model Insight
With persistence 0.996, illiquidity shocks have a half-life of 169 trading days (~0.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 269% more after negative returns
μ
ILLIQ-AMEM Model
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High persistence: persistence 0.996, shock half-life ~169 daysAsymmetry: Illiquidity rises 269% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1294 | 0.91 |
| αARCH | 0.0266 | 1.78* |
| βGARCH | 0.9335 | 102.88*** |
| γleverage | 0.0716 | 2.34** |
0.996
Persistence169d
Half-lifeμ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1294 | 0.91 |
α ARCH Response to squared shocks | 0.0266 | 1.78* |
β GARCH Volatility persistence | 0.9335 | 102.88*** |
γ leverage Additional response to negative shocks | 0.0716 | 2.34** |
Persistence:
0.996
Half-life:
169 days
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