V-Lab
News Corp Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
87.76
decreased by 3.89
1 Week
95.86
increased by 4.21
1 Month
102.48
increased by 10.83
Analysis last updated: Friday, September 18, 2026 at 10:42 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jun 19, 2013 to Sep 18, 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 42 trading days.
μ
ILLIQ-SMEM Model
Tap to view equation
Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.3821 | 13.95*** |
| αARCH | 0.0598 | 7.76*** |
| βGARCH | 0.9237 | 89.35*** |
Spline Coefficients
K=1
| γ1 | -0.0253 | -7.73*** |
0.983
Persistence42d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3821 | 13.95*** |
α ARCH Response to squared shocks | 0.0598 | 7.76*** |
β GARCH Volatility persistence | 0.9237 | 89.35*** |
Spline Coefficients
K=1
| γ1 | -0.0253 | -7.73*** |
Persistence:
0.983
Half-life:
42 days
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