Merck & Co Inc Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, October 13th, 2026
1 Day
9.76
decreased by 0.31
1 Week
10.17
increased by 0.10
1 Month
10.07
increased by 0.00
Analysis last updated: Monday, October 12, 2026 at 09:52 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 1990 to Oct 9, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 2353 trading days (~9.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 175% more after negative returns
μ
ILLIQ-AMEM Model
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High persistence: persistence 1.000, shock half-life ~2353 daysAsymmetry: Illiquidity rises 175% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0282 | 1.21 |
| αARCH | 0.0211 | 5.35*** |
| βGARCH | 0.9601 | 315.20*** |
| γleverage | 0.0370 | 5.54*** |
1.000
Persistence2353d
Half-lifeμ
ILLIQ-AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0282 | 1.21 |
α ARCH Response to squared shocks | 0.0211 | 5.35*** |
β GARCH Volatility persistence | 0.9601 | 315.20*** |
γ leverage Additional response to negative shocks | 0.0370 | 5.54*** |
Persistence:
1.000
Half-life:
2353 days
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