ECA Marcellus Trust I Asymmetric ILLIQ Liquidity Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Illiquidity prediction for Friday, October 30th, 2026
1 Day
4,823,709.00
1 Week
5,020,298.00
1 Month
7,986,487.90
Analysis last updated: Friday, October 30, 2026 at 09:07 AM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jul 1, 2010 to Oct 23, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 1386294 trading days (~5501.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
ILLIQ-AMEM Model
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| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 0.04 |
| αARCH | 0.0529 | 3.31*** |
| βGARCH | 0.9262 | 138.82*** |
| γleverage | 0.0419 | 1.70* |
1.000
Persistence1386294d
Half-lifeILLIQ-AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 0.04 |
α ARCH Response to squared shocks | 0.0529 | 3.31*** |
β GARCH Volatility persistence | 0.9262 | 138.82*** |
γ leverage Additional response to negative shocks | 0.0419 | 1.70* |
Persistence:
1.000
Half-life:
1386294 days
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