Boeing Co/The Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, October 19th, 2026
1 Day
9.62
decreased by 0.26
1 Week
9.34
decreased by 0.54
1 Month
9.57
decreased by 0.31
Analysis last updated: Friday, October 16, 2026 at 10:55 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 16, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 574 trading days (~2.3 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 0.999, shock half-life ~574 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.0382 | 9.77*** |
| αARCH | 0.0607 | 15.70*** |
| βGARCH | 0.9381 | 238.45*** |
Spline Coefficients
K=1
| γ1 | -0.0038 | -3.04*** |
0.999
Persistence574d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0382 | 9.77*** |
α ARCH Response to squared shocks | 0.0607 | 15.70*** |
β GARCH Volatility persistence | 0.9381 | 238.45*** |
Spline Coefficients
K=1
| γ1 | -0.0038 | -3.04*** |
Persistence:
0.999
Half-life:
574 days
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