General Motors Co ILLIQ-MFMEM Liquidity Analysis
Illiquidity prediction for Tuesday, October 13th, 2026
1 Day
29.26
1 Week
31.63
1 Month
30.75
Analysis last updated: Monday, October 12, 2026 at 09:48 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Nov 18, 2010 to Oct 9, 2026Model Insight
Illiquidity shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days. This multi-frequency model splits illiquidity into a fast short-run component and a slow-moving long-run level that drifts over the sample rather than a constant baseline.
ILLIQ-MFMEM Model
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| Param | Value | t-stat |
|---|---|---|
| mwindow | 51 | |
| αARCH | 0.0625 | 6.89*** |
| βGARCH | 0.8786 | 46.69*** |
| γleverage | -0.0625 | -6.99*** |
| λ₁tau intercept | 1.2208 | 2.71*** |
| λ₂forecast adj. | 0.4262 | 13.83*** |
| λ₃tau persistence | 0.5136 | 12.70*** |
0.910
Persistence7d
Half-lifeILLIQ-MFMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 51 | |
α ARCH Response to squared shocks | 0.0625 | 6.89*** |
β GARCH Volatility persistence | 0.8786 | 46.69*** |
γ leverage Additional response to negative shocks | -0.0625 | -6.99*** |
λ₁ tau intercept Baseline long-term coefficient | 1.2208 | 2.71*** |
λ₂ forecast adj. Forecast performance sensitivity | 0.4262 | 13.83*** |
λ₃ tau persistence Long-term factor persistence | 0.5136 | 12.70*** |
Persistence:
0.910
Half-life:
7 days
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