V-Lab
Johnson & Johnson Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
5.92
decreased by 0.24
1 Week
6.31
increased by 0.15
1 Month
6.71
increased by 0.55
Analysis last updated: Friday, September 18, 2026 at 11:33 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 1990 to Sep 18, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 2139 trading days (~8.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 139% more after negative returns
μ
ILLIQ-AMEM Model
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High persistence: persistence 1.000, shock half-life ~2139 daysAsymmetry: Illiquidity rises 139% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0232 | 1.77* |
| αARCH | 0.0258 | 6.51*** |
| βGARCH | 0.9560 | 282.34*** |
| γleverage | 0.0358 | 3.96*** |
1.000
Persistence2139d
Half-lifeμ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0232 | 1.77* |
α ARCH Response to squared shocks | 0.0258 | 6.51*** |
β GARCH Volatility persistence | 0.9560 | 282.34*** |
γ leverage Additional response to negative shocks | 0.0358 | 3.96*** |
Persistence:
1.000
Half-life:
2139 days
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