International Business Machines Corp Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, October 13th, 2026
1 Day
11.28
decreased by 0.38
1 Week
11.95
increased by 0.29
1 Month
12.89
increased by 1.23
Analysis last updated: Monday, October 12, 2026 at 09:49 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 0.999, illiquidity shocks have a half-life of 485 trading days (~1.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 273% more after negative returns
μ
ILLIQ-AMEM Model
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High persistence: persistence 0.999, shock half-life ~485 daysAsymmetry: Illiquidity rises 273% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0662 | 1.99** |
| αARCH | 0.0176 | 4.18*** |
| βGARCH | 0.9571 | 304.61*** |
| γleverage | 0.0479 | 5.98*** |
0.999
Persistence485d
Half-lifeμ
ILLIQ-AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0662 | 1.99** |
α ARCH Response to squared shocks | 0.0176 | 4.18*** |
β GARCH Volatility persistence | 0.9571 | 304.61*** |
γ leverage Additional response to negative shocks | 0.0479 | 5.98*** |
Persistence:
0.999
Half-life:
485 days
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