V-Lab
Chevron Corp Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 22nd, 2026
1 Day
7.93
increased by 0.68
1 Week
7.46
increased by 0.21
1 Month
7.43
increased by 0.18
Analysis last updated: Monday, September 21, 2026 at 09:40 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 1990 to Sep 18, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 2050 trading days (~8.1 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 221% more after negative returns
μ
ILLIQ-AMEM Model
Tap to view equation
High persistence: persistence 1.000, shock half-life ~2050 daysAsymmetry: Illiquidity rises 221% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0283 | 1.73* |
| αARCH | 0.0174 | 4.91*** |
| βGARCH | 0.9629 | 325.10*** |
| γleverage | 0.0386 | 6.79*** |
1.000
Persistence2050d
Half-lifeμ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0283 | 1.73* |
α ARCH Response to squared shocks | 0.0174 | 4.91*** |
β GARCH Volatility persistence | 0.9629 | 325.10*** |
γ leverage Additional response to negative shocks | 0.0386 | 6.79*** |
Persistence:
1.000
Half-life:
2050 days
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