V-Lab
International Business Machines Corp Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 22nd, 2026
1 Day
13.42
decreased by 0.43
1 Week
13.53
decreased by 0.32
1 Month
12.93
decreased by 0.92
Analysis last updated: Monday, September 21, 2026 at 09:44 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 0.999, illiquidity shocks have a half-life of 470 trading days (~1.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 278% more after negative returns
μ
ILLIQ-AMEM Model
Tap to view equation
High persistence: persistence 0.999, shock half-life ~470 daysAsymmetry: Illiquidity rises 278% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0686 | 2.05** |
| αARCH | 0.0174 | 4.15*** |
| βGARCH | 0.9569 | 303.40*** |
| γleverage | 0.0484 | 6.03*** |
0.999
Persistence470d
Half-lifeμ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0686 | 2.05** |
α ARCH Response to squared shocks | 0.0174 | 4.15*** |
β GARCH Volatility persistence | 0.9569 | 303.40*** |
γ leverage Additional response to negative shocks | 0.0484 | 6.03*** |
Persistence:
0.999
Half-life:
470 days
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