International Business Machines Corp Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, November 2nd, 2026
1 Day
10.06
decreased by 0.45
1 Week
10.04
decreased by 0.47
1 Month
10.25
decreased by 0.26
Analysis last updated: Friday, October 30, 2026 at 10:18 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 30, 2026Model Insight
With persistence 0.998, illiquidity shocks have a half-life of 382 trading days (~1.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
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High persistence: persistence 0.998, shock half-life ~382 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.0555 | 9.61*** |
| αARCH | 0.0493 | 13.75*** |
| βGARCH | 0.9488 | 258.26*** |
Spline Coefficients
K=1
| γ1 | -0.0019 | -2.42** |
0.998
Persistence382d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0555 | 9.61*** |
α ARCH Response to squared shocks | 0.0493 | 13.75*** |
β GARCH Volatility persistence | 0.9488 | 258.26*** |
Spline Coefficients
K=1
| γ1 | -0.0019 | -2.42** |
Persistence:
0.998
Half-life:
382 days
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