Atara BiotherapeuticsATRA

13F holders, Q2 2024 (June 30)
5holders −77
1new positions
79sold out
$8.30avg. 13F price*

At the end of Q2 2024, 5 institutions reported holding Atara Biotherapeutics Inc. (ATRA) in their 13F filings, down 77 from Q1 2024. 1 opened new positions and 79 sold out. The largest holders were Boxer Capital, LLC ($1.4M), Lake Street Advisors Group, LLC ($94K) and Cwm, LLC ($5K).

Company
Atara Biotherapeutics Inc.
CUSIP
046513107
Latest filing quarter
Q2 2026

History

Number of 13F holders

020406080100 Q1 2024: 82Q1 2024Q2 2024: 5Q2 2024Q3 2024: 1Q3 2024Q4 2024: 2Q4 2024Q3 2025: 1Q3 2025Q1 2026: 1Q1 2026Q2 2026: 1Q2 2026

Total Exit/New Position Q1 2024 → Q2 2024

InstitutionsTotal Value
New Positions1$344
Exits79$55.0M

All 13F filers, Q1 2024 → Q2 2024: 35 shares bought and 83,101,602 shares sold, net −83,101,567 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 5 holders

Boxer Capital, LLC 0.07% Reduce -96.0% 166,000 $1.4M
Lake Street Advisors Group, LLC 0.00% No change 11,000 $94K
Cwm, LLC 0.00% Reduce -97.3% 542 $5K
IFP Advisors, Inc 0.00% No change 4,500 $2K
EverSource Wealth Advisors, LLC 0.00% New 35 $344

"% of holder's portfolio" is ATRA's weight in each manager's 13F, not the share of Atara Biotherapeutics Inc. the manager owns.