Atara Biotherapeutics, Inc.
ATRA- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001604464
In the last 90 days, Atara Biotherapeutics, Inc. insiders filed 1 open-market purchase and 1 sale; 36 institutions reported holding it in 13F filings for Q2 2026, worth $51.3M in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in Atara Biotherapeutics, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 32
- −5 vs. Q1 2025
- Shares held
- 1.80M
- −283.4K (−13.6%) vs. Q1 2025
- Total value
- $13.9M
- +$1.53M (+12.3%) vs. Q1 2025
- New holders
- 4
- 5 more added
- Sold out
- 9
- 6 more reduced
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATRA on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 36 | $51.3M |
| Q1 2026 | 33 | $12.1M |
| Q4 2025 | 41 | $37.1M |
| Q3 2025 | 37 | $27.0M |
| Q2 2025 | 32 | $13.9M |
| Q1 2025 | 37 | $12.4M |
| Q4 2024 | 43 | $31.5M |
| Q3 2024 | 35 | $19.6M |
| Q2 2024 | 48 | $24.1M |
| Q1 2024 | 82 | $57.8M |
| Q4 2023 | 91 | $33.2M |
| Q3 2023 | 109 | $130.5M |
| Q2 2023 | 118 | $145.8M |
| Q1 2023 | 125 | $297.8M |
| Q4 2022 | 139 | $319.3M |
| Q3 2022 | 155 | $376.2M |
| Q2 2022 | 134 | $777.4M |
| Q1 2022 | 145 | $909.5M |
| Q4 2021 | 139 | $1.50B |
| Q3 2021 | 140 | $1.61B |
| Q2 2021 | 145 | $1.34B |
| Q1 2021 | 151 | $1.24B |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Atara Biotherapeutics, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| EcoR1 Capital, LLC | 573,183 | $4.42M | 0.26% | 00.0% | Unchanged |
| Redmile Group, LLC | 441,701 | $3.41M | 0.36% | 00.0% | Unchanged |
| Vanguard Group Inc | 190,761 | $1.47M | 0.00% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 94,085 | $726.3K | 0.04% | 00.0% | Unchanged |
| Staley Capital Advisers Inc | 75,000 | $579.0K | 0.02% | −5,000−6.3% | Reduced |
| BlackRock, Inc. | 70,848 | $546.9K | 0.00% | +10,050+16.5% | Added |
| Acadian Asset Management LLC | 65,155 | $502.0K | 0.00% | −49,956−43.4% | Reduced |
| Geode Capital Management, LLC | 60,136 | $464.3K | 0.00% | +1,457+2.5% | Added |
| Marshall Wace, LLP | 42,355 | $327.0K | 0.00% | +42,355 | New |
| State Street Corp | 25,253 | $195.0K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 23,003 | $177.6K | 0.00% | +23,003 | New |
| Mackenzie Financial Corp | 22,514 | $173.8K | 0.00% | +22,514 | New |
| Gsa Capital Partners LLP | 19,591 | $151.0K | 0.01% | +206+1.1% | Added |
| FMR LLC | 17,156 | $132.4K | 0.00% | −10.0% | Reduced |
| Renaissance Technologies LLC | 16,936 | $130.7K | 0.00% | −500−2.9% | Reduced |
| Morgan Stanley | 14,926 | $115.2K | 0.00% | +3,098+26.2% | Added |
| Bridgeway Capital Management, LLC | 14,000 | $108.1K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 11,170 | $86.2K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 8,385 | $64.7K | 0.00% | −15,949−65.5% | Reduced |
| Bank of America Corp | 7,688 | $59.4K | 0.00% | −179,609−95.9% | Reduced |
| Raymond James Financial Inc | 4,021 | $31.0K | 0.00% | +4,021 | New |
| Royal Bank of Canada | 1,450 | $12.0K | 0.00% | +600+70.6% | Added |
| SBI Securities Co., Ltd. | 1,404 | $10.8K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 951 | $7.34K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 703 | $5.60K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 216 | $1.67K | 0.00% | 00.0% | Unchanged |
| Raiffeisen Bank International AG | 200 | $1.54K | 0.00% | 00.0% | Unchanged |
| Banque Transatlantique SA | 176 | $1.37K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 175 | $1.35K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 148 | $1.14K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 50 | $386 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 10 | $77 | 0.00% | 00.0% | Unchanged |
| Tang Capital Management LLC | 0 | $0 | 0.00% | −75,196−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −41,014−100.0% | Sold out |
| Birchview Capital, LP | 0 | $0 | 0.00% | −22,000−100.0% | Sold out |
| Boston Private Wealth LLC | 0 | $0 | 0.00% | −421−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −368−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −368−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −185−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −180−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |