General Motors Co Asymmetric ILLIQ Liquidity Analysis
Liquidity prediction for Wednesday, July 22nd, 2026
1 Day
32.48
decreased by 1.01
1 Week
32.73
decreased by 0.76
1 Month
32.85
decreased by 0.64
Analysis last updated: Tuesday, July 21, 2026 at 09:46 PM UTC
News Impact Curve
How returns affect tomorrow's liquidityLiquidity Forecast
How liquidity evolves over timeParameter Estimates
Nov 18, 2010 to Jul 17, 2026Model Insight
With persistence 0.991, illiquidity shocks have a half-life of 78 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: illiquidity responds almost entirely to negative returns
μ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.3129 | 10.32*** |
α ARCH Response to squared shocks | 0.0129 | 6.29*** |
β GARCH Volatility persistence | 0.9383 | 548.72*** |
γ leverage Additional response to negative shocks | 0.0799 | 17.14*** |
Persistence:
0.991
Half-life:
78 days
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