V-Lab
General Motors Co Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, August 10th, 2026
1 Day
28.82
decreased by 0.08
1 Week
28.31
decreased by 0.59
1 Month
27.27
decreased by 1.63
Analysis last updated: Friday, August 7, 2026 at 10:41 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Nov 18, 2010 to Aug 7, 2026Model Insight
With persistence 0.996, illiquidity shocks have a half-life of 160 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1588 | 7.55*** |
α ARCH Response to squared shocks | 0.0698 | 10.01*** |
β GARCH Volatility persistence | 0.9259 | 127.57*** |
Spline Coefficients
K=1
| γ1 | -0.0115 | -2.40** |
Persistence:
0.996
Half-life:
160 days
Other General Motors Co Analyses
Other Spline ILLIQ Analyses on Equities