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 2026
Institutional positions in Atara Biotherapeutics, Inc. as of Jun 30, 2026. 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
- 36
- +3 vs. Q1 2026
- Shares held
- 4.47M
- +1.90M (+74.2%) vs. Q1 2026
- Total value
- $51.3M
- +$39.2M (+323.0%) vs. Q1 2026
- New holders
- 4
- 12 more added
- Sold out
- 1
- 8 more reduced
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding Atara Biotherapeutics, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rockefeller Capital Management L.P. | 8 | $92 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 10 | $114 | 0.00% | 00.0% | Unchanged |
| Kerr Financial Planning Corp | 24 | $276 | 0.00% | 00.0% | Unchanged |
| PlanVest Financial, Inc | 28 | $321 | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 46 | $528 | 0.00% | −12−20.7% | Reduced |
| Citigroup Inc | 97 | $1.11K | 0.00% | +96+9,600.0% | Added |
| JPMorgan Chase & Co | 216 | $2.41K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 251 | $2.88K | 0.00% | 00.0% | Unchanged |
| Banque Transatlantique SA | 176 | $3.10K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 304 | $3.49K | 0.00% | +304 | New |
| Caitong International Asset Management Co., Ltd | 311 | $3.57K | 0.00% | +311 | New |
| Jones Financial Companies LLLP | 803 | $8.44K | 0.00% | +100+14.2% | Added |
| SBI Securities Co., Ltd. | 1,404 | $16.1K | 0.00% | −170−10.8% | Reduced |
| Vanguard Global Advisers, LLC | 1,456 | $16.7K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 3,979 | $45.7K | 0.00% | −46,091−92.1% | Reduced |
| Royal Bank of Canada | 4,743 | $55.0K | 0.00% | +424+9.8% | Added |
| Morgan Stanley | 9,178 | $105.4K | 0.00% | +9+0.1% | Added |
| Citadel Advisors LLC | 10,159 | $116.6K | 0.00% | +10,159 | New |
| Millennium Management LLC | 12,680 | $145.6K | 0.00% | −35,009−73.4% | Reduced |
| Bridgeway Capital Management, LLC | 14,000 | $160.7K | 0.00% | −18,691−57.2% | Reduced |
| XTX Topco Ltd | 15,303 | $175.7K | 0.00% | +15,303 | New |
| FMR LLC | 16,238 | $186.4K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 16,591 | $190.5K | 0.00% | +4,251+34.4% | Added |
| State Street Corp | 26,453 | $303.7K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 30,345 | $348.4K | 0.00% | −3,525−10.4% | Reduced |
| Acadian Asset Management LLC | 38,845 | $444.0K | 0.00% | −92,065−70.3% | Reduced |
| Vanguard Fiduciary Trust Co | 43,036 | $494.1K | 0.00% | +9,415+28.0% | Added |
| Staley Capital Advisers Inc | 50,000 | $574.0K | 0.02% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 75,128 | $862.9K | 0.00% | +8,982+13.6% | Added |
| BlackRock, Inc. | 84,455 | $969.5K | 0.00% | +5,433+6.9% | Added |
| Mackenzie Financial Corp | 233,249 | $2.68M | 0.00% | −80,371−25.6% | Reduced |
| Vanguard Capital Management LLC | 247,047 | $2.84M | 0.00% | +29,185+13.4% | Added |
| Redmile Group, LLC | 441,701 | $5.07M | 0.34% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 687,718 | $7.90M | 0.01% | +493,454+254.0% | Added |
| Adage Capital Partners GP, L.L.C. | 850,000 | $9.76M | 0.01% | +150,000+21.4% | Added |
| EcoR1 Capital, LLC | 1,552,000 | $17.8M | 0.88% | +1,452,407+1,458.3% | Added |
| Rhumbline Advisers | 0 | $0 | 0.00% | −175−100.0% | Sold out |