V-Lab
Bank of New York Mellon Corp/The Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 8th, 2026
1 Day
25.75
decreased by 1.63
1 Week
26.27
decreased by 1.11
1 Month
31.11
increased by 3.73
Analysis last updated: Friday, September 4, 2026 at 10:38 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 1990 to Sep 4, 2026Model Insight
This model fits a time-varying baseline (a spline), so illiquidity mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 14 trading days.
μ
ILLIQ-SMEM Model
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Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 3.7282 | 9.32*** |
| αARCH | 0.1171 | 5.46*** |
| βGARCH | 0.8351 | 34.42*** |
Spline Coefficients
K=7
| γ1 | 0.0122 | 1.00 |
| γ2 | -0.0098 | -0.47 |
| γ3 | 0.0080 | 0.31 |
| γ4 | -0.0145 | -0.39 |
| γ5 | 0.0077 | 0.23 |
| γ6 | 0.0102 | 0.51 |
| γ7 | -0.0404 | -1.12 |
0.952
Persistence14d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.7282 | 9.32*** |
α ARCH Response to squared shocks | 0.1171 | 5.46*** |
β GARCH Volatility persistence | 0.8351 | 34.42*** |
Spline Coefficients
K=7
| γ1 | 0.0122 | 1.00 |
| γ2 | -0.0098 | -0.47 |
| γ3 | 0.0080 | 0.31 |
| γ4 | -0.0145 | -0.39 |
| γ5 | 0.0077 | 0.23 |
| γ6 | 0.0102 | 0.51 |
| γ7 | -0.0404 | -1.12 |
Persistence:
0.952
Half-life:
14 days
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