Superworth

Atara Biotherapeutics market cap ATRA

Share price times shares outstanding: what the whole company sells for, since 2014.

Today, Oct 23, 2026
$86.2M
Highest close in our data
$2.2B
May 2018

Atara Biotherapeutics is worth $86.2M at the close on Oct 23, 2026, at $8.59 a share.

That is down 15% over the last year and down 93% over five years.

Its highest close in our data was $2.2B in May 2018.

Market cap over time

Open the interactive chart, with overlays and comparisons

Year by year

YearEnd of yearLowHighChange
2026 so far$86.2M$30.1M$128.1M−31%
2025$124.5M$32.4M$129.8M+78%
2024$70M$34.5M$124.3M+34%
2023$52.3M$23.4M$500M−83%
2022$311.2M$283M$1.4B−78%
2021$1.4B$1.1B$1.6B−9%
2020$1.5B$441M$1.9B+71%
2019$894M$596.1M$1.8B−43%
2018$1.6B$566M$2.2B+183%
2017$553.8M$371.1M$610.9M+35%
2016$409.8M$391.8M$714.9M−46%
2015$756.1M$363.8M$1.5B+35%
2014$560.1M$468.3M$616.1Mn/a

Against its peers

Companies in Healthcare nearest Atara Biotherapeutics' size, closest first, today.

What the market cap tells you

Share price times shares outstanding: what the whole company sells for today.

Size, not quality. Large caps move slower and are covered more. That is all it tells you.

More on Atara Biotherapeutics

Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.