V-Lab
Perma-Fix Environmental Services Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 8th, 2026
1 Day
6,243.15
decreased by 187.52
1 Week
6,173.67
decreased by 257.00
1 Month
5,188.81
decreased by 1,241.86
Analysis last updated: Friday, September 4, 2026 at 09:26 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Dec 8, 1992 to Sep 4, 2026Model Insight
With persistence 0.990, illiquidity shocks have a half-life of 72 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.6048 | 4.16*** |
α ARCH Response to squared shocks | 0.1247 | 8.57*** |
β GARCH Volatility persistence | 0.8658 | 58.66*** |
Spline Coefficients
K=4
| γ1 | -0.3364 | -4.51*** |
| γ2 | 0.5576 | 4.94*** |
| γ3 | -0.3598 | -4.81*** |
| γ4 | 0.1344 | 1.51 |
Persistence:
0.990
Half-life:
72 days
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