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Bank of New York Mellon Corp/The Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Monday, September 28th, 2026

1 Day

19.33

decreased by 1.47

1 Week

20.92

increased by 0.12

1 Month

24.27

increased by 3.47

Analysis last updated: Saturday, September 26, 2026 at 12:02 AM UTC

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graph of Bank of New York Mellon Corp/The ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 25, 2026

Model 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 13 trading days.

μ

ILLIQ-SMEM Model

Tap to view equation

Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
ParamValuet-stat
ωconst3.7545
9.49***
αARCH0.1172
5.39***
βGARCH0.8319
32.84***
∑γi Spline Coefficients
K=8
γ10.0074
0.48
γ20.0044
0.18
γ3-0.0163
-0.84
γ40.0250
1.78*
γ5-0.0447
-2.36**
γ60.0534
1.66*
γ7-0.0360
-1.30
γ8-0.0130
-0.32

0.949

Persistence

13d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

3.7545
9.49***
α

ARCH

Response to squared shocks

0.1172
5.39***
β

GARCH

Volatility persistence

0.8319
32.84***
∑γi Spline Coefficients
K=8
γ10.0074
0.48
γ20.0044
0.18
γ3-0.0163
-0.84
γ40.0250
1.78*
γ5-0.0447
-2.36**
γ60.0534
1.66*
γ7-0.0360
-1.30
γ8-0.0130
-0.32

Persistence:

0.949

Half-life:

13 days