Atara BiotherapeuticsATRA

13F holders, Q3 2024 (September 30)
34holders −10
3new positions
13sold out
3famous investors
$8.13avg. 13F price*

At the end of Q3 2024, 34 institutions reported holding Atara Biotherapeutics Inc. (ATRA) in their 13F filings, down 10 from Q2 2024. 3 opened new positions and 13 sold out. The largest holders were EcoR1 Capital, LLC ($3.8M), Redmile Group, LLC ($3.7M) and Citadel Advisors ($2.1M). 3 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).

Company
Atara Biotherapeutics Inc.
CUSIP
046513206
Latest filing quarter
Q2 2026

History

Number of 13F holders

01020304050 Q2 2024: 44Q2 2024Q3 2024: 34Q3 2024Q4 2024: 41Q4 2024Q1 2025: 37Q1 2025Q2 2025: 32Q2 2025Q3 2025: 36Q3 2025Q4 2025: 41Q4 2025Q1 2026: 32Q1 2026Q2 2026: 35Q2 2026

Total Exit/New Position Q2 2024 → Q3 2024

InstitutionsTotal Value
New Positions3$12K
Exits13$2.7M

All 13F filers, Q2 2024 → Q3 2024: 223,368 shares bought and 462,643 shares sold, net −239,275 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 34 holders

EcoR1 Capital, LLC 0.13% Add +15.3% 468,938 $3.8M
Redmile Group, LLC 0.22% No change 452,270 $3.7M
Citadel Advisors 0.00% No change 260,480 $2.1M
Bank of America Corp. 0.00% Add +9.5% 203,627 $1.7M
Vanguard Group Inc. 0.00% Add +6.7% 180,715 $1.5M
Millennium Management 0.00% Add +50.9% 176,053 $1.4M
Acadian Asset Management LLC 0.00% Add +8.2% 129,144 $1.0M
Vestal Point Capital, LP 0.08% Add +11.3% 124,677 $1.0M
Tang Capital Management LLC 0.04% No change 75,196 $611K
Renaissance Technologies 0.00% Add +47.0% 67,734 $551K
BlackRock, Inc. 0.00% — 60,954 $496K
Geode Capital Management, LLC 0.00% Add +9.5% 46,720 $380K
Centiva Capital, LP 0.02% Reduce -69.0% 43,403 $353K
Staley Capital Advisers Inc. 0.01% No change 40,000 $325K
FMR LLC 0.00% Add +41.8% 25,061 $204K
State Street Corp. 0.00% Add +52.3% 22,353 $182K
Morgan Stanley 0.00% Add +65.5% 16,189 $132K
Bridgeway Capital Management, LLC 0.00% No change 14,000 $114K
JPMorgan Chase & Co. 0.00% Reduce -17.5% 1,370 $11K
Wells Fargo & Company 0.00% Add +297.1% 1,251 $10K
Tower Research Capital LLC (TRC) 0.00% Reduce -83.2% 752 $6K
Global Retirement Partners, LLC 0.00% New 750 $6K
Russell Investments Group, Ltd. 0.00% Add +35850.0% 719 $6K
Osaic Holdings, Inc. 0.00% New 644 $5K
UBS Group AG 0.00% Reduce -0.3% 402 $3K
Group One Trading LLC 0.00% Reduce -91.8% 394 $3K
IFP Advisors, Inc 0.00% No change 180 $1K
Rhumbline Advisers 0.00% Reduce -74.3% 175 $1K
Lazard Asset Management LLC 0.00% Reduce -58.1% 129 $1K
Catalyst Funds Management Pty Ltd 0.00% No change 100 $813
BNP Paribas Financial Markets 0.00% Reduce -99.8% 56 $455
GAMMA Investing LLC 0.00% New 56 $455
Citigroup Inc. 0.00% Reduce -99.8% 8 $65
Royal Bank of Canada 0.00% Reduce -99.2% 17 $0

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