BB Biotech AG ILLIQ-MFMEM Liquidity Analysis
Illiquidity prediction for Monday, October 26th, 2026
1 Day
4,026.68
1 Week
3,961.20
1 Month
3,159.56
Analysis last updated: Sunday, October 25, 2026 at 09:05 AM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Nov 15, 1993 to Oct 23, 2026Model Insight
Illiquidity shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days. This multi-frequency model splits illiquidity into a fast short-run component and a slow-moving long-run level that drifts over the sample rather than a constant baseline.
ILLIQ-MFMEM Model
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| Param | Value | t-stat |
|---|---|---|
| mwindow | 66 | |
| αARCH | 0.1087 | 13.52*** |
| βGARCH | 0.8841 | 88.82*** |
| γleverage | -0.1087 | -9.07*** |
| λ₁tau intercept | 1.5470 | 1.85* |
| λ₂forecast adj. | 0.0115 | 0.91 |
| λ₃tau persistence | 0.9858 | 73.92*** |
0.938
Persistence11d
Half-lifeILLIQ-MFMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 66 | |
α ARCH Response to squared shocks | 0.1087 | 13.52*** |
β GARCH Volatility persistence | 0.8841 | 88.82*** |
γ leverage Additional response to negative shocks | -0.1087 | -9.07*** |
λ₁ tau intercept Baseline long-term coefficient | 1.5470 | 1.85* |
λ₂ forecast adj. Forecast performance sensitivity | 0.0115 | 0.91 |
λ₃ tau persistence Long-term factor persistence | 0.9858 | 73.92*** |
Persistence:
0.938
Half-life:
11 days
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