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, Q3 2025
Institutional positions in Atara Biotherapeutics, Inc. as of Sep 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
- 37
- +5 vs. Q2 2025
- Shares held
- 1.88M
- +79.8K (+4.4%) vs. Q2 2025
- Total value
- $27.0M
- +$13.1M (+93.8%) vs. Q2 2025
- New holders
- 9
- 8 more added
- Sold out
- 4
- 7 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Atara Biotherapeutics, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rockefeller Capital Management L.P. | 8 | $115 | 0.00% | +8 | New |
| Advisor Group Holdings, Inc. | 10 | $138 | 0.00% | 00.0% | Unchanged |
| Alexis Investment Partners, LLC | 15 | $215 | 0.00% | +15 | New |
| Kerr Financial Planning Corp | 24 | $322 | 0.00% | +24 | New |
| BNP Paribas Arbitrage, SA | 50 | $716 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 148 | $2.12K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 175 | $2.51K | 0.00% | 00.0% | Unchanged |
| Banque Transatlantique SA | 176 | $2.52K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 216 | $3.10K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 251 | $3.60K | 0.00% | −700−73.6% | Reduced |
| Tower Research Capital LLC (TRC) | 342 | $4.90K | 0.00% | +342 | New |
| Jones Financial Companies LLLP | 703 | $9.66K | 0.00% | 00.0% | Unchanged |
| Private Wealth Asset Management, LLC | 900 | $12.9K | 0.00% | +900 | New |
| Royal Bank of Canada | 1,209 | $17.0K | 0.00% | −241−16.6% | Reduced |
| SBI Securities Co., Ltd. | 1,404 | $20.1K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 5,845 | $83.8K | 0.00% | −1,843−24.0% | Reduced |
| Northern Trust Corp | 11,033 | $158.1K | 0.00% | −137−1.2% | Reduced |
| Bridgeway Capital Management, LLC | 14,000 | $200.6K | 0.00% | 00.0% | Unchanged |
| Globeflex Capital L P | 15,458 | $221.5K | 0.03% | +15,458 | New |
| Quadrature Capital Ltd | 16,542 | $236.9K | 0.00% | +16,542 | New |
| Cambridge Investment Research Advisors, Inc. | 17,109 | $245.0K | 0.00% | +17,109 | New |
| FMR LLC | 17,156 | $245.8K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 17,268 | $247.5K | 0.00% | +8,883+105.9% | Added |
| Renaissance Technologies LLC | 18,936 | $271.4K | 0.00% | +2,000+11.8% | Added |
| Jane Street Group, LLC | 22,060 | $316.1K | 0.00% | +22,060 | New |
| State Street Corp | 25,253 | $361.9K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 26,213 | $376.0K | 0.03% | +6,622+33.8% | Added |
| Morgan Stanley | 35,938 | $515.0K | 0.00% | +21,012+140.8% | Added |
| Staley Capital Advisers Inc | 50,000 | $716.5K | 0.03% | −25,000−33.3% | Reduced |
| Acadian Asset Management LLC | 56,416 | $807.0K | 0.00% | −8,739−13.4% | Reduced |
| Geode Capital Management, LLC | 60,526 | $867.5K | 0.00% | +390+0.6% | Added |
| Mackenzie Financial Corp | 63,816 | $914.5K | 0.00% | +41,302+183.5% | Added |
| BlackRock, Inc. | 69,833 | $1.00M | 0.00% | −1,015−1.4% | Reduced |
| Marshall Wace, LLP | 115,796 | $1.66M | 0.00% | +73,441+173.4% | Added |
| Vanguard Group Inc | 203,438 | $2.92M | 0.00% | +12,677+6.6% | Added |
| Redmile Group, LLC | 441,701 | $6.33M | 0.62% | 00.0% | Unchanged |
| EcoR1 Capital, LLC | 573,183 | $8.21M | 0.39% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 0 | $0 | 0.00% | −94,085−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −23,003−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −4,021−100.0% | Sold out |
| Raiffeisen Bank International AG | 0 | $0 | 0.00% | −200−100.0% | Sold out |