Who owns ANAB
206 institutions reported holding ANAB for 2026Q1, together 98% of the company, more than the 176 a quarter earlier.
206
Institutions reporting a position · as of 2026Q1 · up from 176 the quarter before
- Shares held by institutions
- 28.2M
Shares held by institutions · 98% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $1.55B
Reported value · at 2026-03-31 prices, not today's
- Top 5 holders
- 47%
Top 5 holders · of the whole company, between five filers
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 37
- New positions
- 45
- Positions exited
- 21
- Added to
- 55
- Reduced
- 65
- Top 10 holdersof the company
- 61%
| Quarter | Filers | Shares | Reported value |
|---|---|---|---|
| 2026Q1 | 206 | 28.2M | $1.55B |
| 2025Q4 | 176 | 29.4M | $1.42B |
| 2025Q3 | 165 | 31.7M | $980M |
| 2025Q2 | 147 | 36.8M | $816M |
| 2025Q1 | 152 | 40.0M | $743M |
| 2024Q4 | 134 | 35.4M | $469M |
| 2024Q3 | 159 | 33.6M | $1.13B |
| 2024Q2 | 134 | 29.8M | $747M |
| 2024Q1 | 133 | 29.2M | $658M |
| 2023Q4 | 119 | 30.2M | $646M |
| 2023Q3 | 116 | 30.3M | $545M |
| 2023Q2 | 116 | 30.2M | $615M |
| 2023Q1 | 113 | 31.0M | $675M |
| 2022Q4 | 118 | 32.9M | $1.02B |
| 2022Q3 | 114 | 32.6M | $831M |
| 2022Q2 | 124 | 31.2M | $633M |
| Holder | Shares | % of company | Value |
|---|---|---|---|
| EcoR1 Capital, LLC | 7.9M | 27% | $437M |
| BlackRock Inc. | 1.7M | 5.9% | $93M |
| VANGUARD GROUP INC | 1.5M | 5.3% | $85M |
| TANG CAPITAL MANAGEMENT LLC | 1.3M | 4.6% | $74M |
| MORGAN STANLEY | 1.0M | 3.5% | $55M |
| STATE STREET CORP | 1.0M | 3.5% | $55M |
| Affinity Asset Advisors, LLC | 0.9M | 3.3% | $52M |
| Sanofi | 0.8M | 2.9% | $46M |
| Palo Alto Investors LP | 0.6M | 2.2% | $35M |
| 683 Capital Management, LLC | 0.6M | 2.2% | $35M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
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