V-Lab
HP Inc Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 22nd, 2026
1 Day
62.23
increased by 3.66
1 Week
60.15
increased by 1.58
1 Month
61.33
increased by 2.76
Analysis last updated: Monday, September 21, 2026 at 09:43 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 1990 to Sep 18, 2026Model Insight
With persistence 0.998, illiquidity shocks have a half-life of 381 trading days (~1.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 197% more after negative returns
μ
ILLIQ-AMEM Model
Tap to view equation
High persistence: persistence 0.998, shock half-life ~381 daysAsymmetry: Illiquidity rises 197% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.3537 | 2.45** |
| αARCH | 0.0273 | 4.96*** |
| βGARCH | 0.9439 | 238.00*** |
| γleverage | 0.0539 | 5.52*** |
0.998
Persistence381d
Half-lifeμ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.3537 | 2.45** |
α ARCH Response to squared shocks | 0.0273 | 4.96*** |
β GARCH Volatility persistence | 0.9439 | 238.00*** |
γ leverage Additional response to negative shocks | 0.0539 | 5.52*** |
Persistence:
0.998
Half-life:
381 days
Other HP Inc Analyses
Other Asymmetric ILLIQ Analyses on Equities