V-Lab
Northwest Biotherapeutics Inc Spline 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
116,287,300,000,000,000,000,000,000,000,000,000.00
1 Week
74,827,168,000,000,000,000,000,000,000,000,000.00
1 Month
18,648,901,702,461,905,000,000,000,000,000,000.00
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, 2026Model Insight
Estimated persistence of 1.000 is at or above 1 (non-stationary): illiquidity shocks do not decay and the long-run level is undefined, so long-horizon forecasts should be treated with caution.
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0895 | |
α ARCH Response to squared shocks | 0.1529 | |
β GARCH Volatility persistence | 0.8471 |
| γ1 | -5.7743 | |
| γ2 | 5.1900 | |
| γ3 | 4.6810 | |
| γ4 | -4.7192 | |
| γ5 | 7.3095 | |
| γ6 | 13.0921 |
Persistence:
1.000
Half-life:
-
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