V-Lab
Northwest Biotherapeutics Inc 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 Monday, August 24th, 2026
1 Day
20,842.38
decreased by 89,291.52
1 Week
58,826.62
decreased by 51,307.28
1 Month
50,096.61
decreased by 60,037.29
Analysis last updated: Saturday, August 22, 2026 at 01:58 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Dec 14, 2001 to Aug 21, 2026Illiquid Asset
Model 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.
μ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0000 | |
α ARCH Response to squared shocks | 0.8407 | 2.25** |
β GARCH Volatility persistence | 0.0000 | 0.00 |
γ leverage Additional response to negative shocks | 0.3187 | 0.76 |
Persistence:
1.000
Half-life:
1386294 days
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