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Atara Biotherapeutics Inc Asymmetric ILLIQ Liquidity Analysis

Illiquidity prediction for Monday, July 27th, 2026

1 Day

80,033.34

decreased by 19.93

1 Week

73,143.86

decreased by 6,909.41

1 Month

59,830.88

decreased by 20,222.39

Analysis last updated: Friday, July 24, 2026 at 09:30 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of Atara Biotherapeutics Inc ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Oct 16, 2014 to Jul 24, 2026

Model Insight

With persistence 0.999, illiquidity shocks have a half-life of 821 trading days (~3.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: Illiquidity rises 144% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
1.78*
α

ARCH

Response to squared shocks

0.0550
16.57***
β

GARCH

Volatility persistence

0.9044
488.35***
γ

leverage

Additional response to negative shocks

0.0795
15.15***

Persistence:

0.999

Half-life:

821 days