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Protara Therapeutic Inc Asymmetric ILLIQ Liquidity Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Illiquidity prediction for Monday, August 17th, 2026

1 Day

9,418.97

decreased by 901.69

1 Week

10,397.17

increased by 76.51

1 Month

10,327.53

increased by 6.87

Analysis last updated: Friday, August 14, 2026 at 09:16 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Protara Therapeutic Inc ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Oct 22, 2014 to Aug 14, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 1386294 trading days (~5501.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: Illiquidity rises 22% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
0.16
α

ARCH

Response to squared shocks

0.1581
20.40***
β

GARCH

Volatility persistence

0.8242
258.38***
γ

leverage

Additional response to negative shocks

0.0353
3.38***

Persistence:

1.000

Half-life:

1386294 days