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, Q4 2025
Institutional positions in Atara Biotherapeutics, Inc. as of Dec 31, 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
- 41
- +4 vs. Q3 2025
- Shares held
- 2.05M
- +166.5K (+8.8%) vs. Q3 2025
- Total value
- $37.1M
- +$10.1M (+37.4%) vs. Q3 2025
- New holders
- 7
- 12 more added
- Sold out
- 3
- 8 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Atara Biotherapeutics, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Kerr Financial Planning Corp | 24 | $112 | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 8 | $145 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 10 | $180 | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 46 | $832 | 0.00% | −4−8.0% | Reduced |
| Federated Hermes, Inc. | 130 | $2.35K | 0.00% | +130 | New |
| Rhumbline Advisers | 175 | $3.17K | 0.00% | 00.0% | Unchanged |
| Banque Transatlantique SA | 176 | $3.18K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 216 | $3.91K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 251 | $4.54K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 703 | $12.7K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 850 | $15.0K | 0.00% | −359−29.7% | Reduced |
| Private Wealth Asset Management, LLC | 900 | $16.3K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 1,397 | $25.3K | 0.00% | −15,871−91.9% | Reduced |
| SBI Securities Co., Ltd. | 1,404 | $25.4K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,737 | $31.4K | 0.00% | +1,395+407.9% | Added |
| Dimensional Fund Advisors LP | 10,028 | $181.4K | 0.00% | +10,028 | New |
| Bank of America Corp | 10,387 | $187.9K | 0.00% | +4,542+77.7% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 10,446 | $189.0K | 0.00% | +10,446 | New |
| Walleye Capital LLC | 12,169 | $220.1K | 0.00% | +12,169 | New |
| Northern Trust Corp | 12,340 | $223.2K | 0.00% | +1,307+11.8% | Added |
| Jane Street Group, LLC | 13,990 | $253.1K | 0.00% | −8,070−36.6% | Reduced |
| Susquehanna International Group, LLP | 14,018 | $253.6K | 0.00% | +14,018 | New |
| Citadel Advisors LLC | 15,577 | $281.8K | 0.00% | +15,577 | New |
| Morgan Stanley | 15,991 | $289.3K | 0.00% | −19,947−55.5% | Reduced |
| FMR LLC | 17,156 | $310.4K | 0.00% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 18,296 | $331.0K | 0.00% | +18,296 | New |
| Quadrature Capital Ltd | 20,321 | $367.6K | 0.00% | +3,779+22.8% | Added |
| Cambridge Investment Research Advisors, Inc. | 22,864 | $414.0K | 0.00% | +5,755+33.6% | Added |
| State Street Corp | 26,453 | $478.5K | 0.00% | +1,200+4.8% | Added |
| Renaissance Technologies LLC | 30,040 | $543.4K | 0.00% | +11,104+58.6% | Added |
| Bridgeway Capital Management, LLC | 32,691 | $591.4K | 0.01% | +18,691+133.5% | Added |
| Staley Capital Advisers Inc | 50,000 | $904.5K | 0.04% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 54,048 | $976.0K | 0.00% | −2,368−4.2% | Reduced |
| Mackenzie Financial Corp | 58,668 | $1.05M | 0.00% | −5,148−8.1% | Reduced |
| Geode Capital Management, LLC | 62,381 | $1.13M | 0.00% | +1,855+3.1% | Added |
| BlackRock, Inc. | 67,108 | $1.21M | 0.00% | −2,725−3.9% | Reduced |
| Globeflex Capital L P | 77,224 | $1.40M | 0.21% | +61,766+399.6% | Added |
| Marshall Wace, LLP | 148,632 | $2.69M | 0.00% | +32,836+28.4% | Added |
| Vanguard Group Inc | 225,940 | $4.09M | 0.00% | +22,502+11.1% | Added |
| Redmile Group, LLC | 441,701 | $7.99M | 0.59% | 00.0% | Unchanged |
| EcoR1 Capital, LLC | 573,183 | $10.4M | 0.48% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −26,213−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −148−100.0% | Sold out |
| Alexis Investment Partners, LLC | 0 | $0 | 0.00% | −15−100.0% | Sold out |