Who owns ANAPTYSBIO, INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ANAB from SEC Form 13F filings across 212 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 212 institutions disclosed 30.1M shares of ANAPTYSBIO, INC worth $2.05B — about 104.9% of shares outstanding; the largest disclosed holder is EcoR1 Capital, LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
212
13F holders
$2.05B
value, 2026 filers
104.9%
of shares outstanding (30.1M sh)
46
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ANAB's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | EcoR1 Capital, LLC | 7.9M | $531.9M | 25.9% | 27.5% | 0.0% |
| 2 | BlackRock, Inc. | 1.8M | $124.5M | 0.0% | 6.4% | +9.7% |
| 3 | TANG CAPITAL MANAGEMENT LLC | 1.3M | $89.8M | 4.1% | 4.6% | 0.0% |
| 4 | STATE STREET CORP | 1.3M | $86.8M | 0.0% | 4.5% | +29.6% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 906,233 | $61.2M | 0.0% | 3.2% | +6.2% |
| 6 | Affinity Asset Advisors, LLC | 826,109 | $55.8M | 2.5% | 2.9% | -12.1% |
| 7 | Sanofi | 821,917 | $55.5M | 10.4% | 2.9% | 0.0% |
| 8 | MILLENNIUM MANAGEMENT LLC | 807,316 | $54.5M | 0.0% | 2.8% | +69.8% |
| 9 | Woodline Partners LP | 717,014 | $48.4M | 0.1% | 2.5% | +108.3% |
| 10 | 683 Capital Management, LLC | 660,000 | $44.6M | 2.2% | 2.3% | +5.6% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 637,873 | $43.1M | 0.0% | 2.2% | +22.6% |
| 12 | Palo Alto Investors LP | 603,489 | $40.7M | 5.6% | 2.1% | -5.4% |
| 13 | GOLDMAN SACHS GROUP INC | 584,070 | $39.4M | 0.0% | 2% | +75.5% |
| 14 | First Light Asset Management, LLC | 582,004 | $39.3M | 2.4% | 2% | +2.9% |
| 15 | D. E. Shaw & Co., Inc. | 539,666 | $36.4M | 0.0% | 1.9% | -6.8% |
| 16 | VANGUARD PORTFOLIO MANAGEMENT LLC | 527,858 | $35.6M | 0.0% | 1.8% | +1.5% |
| 17 | Apis Capital Advisors, LLC | 497,000 | $33.5M | 3.3% | 1.7% | +108.8% |
| 18 | Sofinnova Investments, Inc. | 493,536 | $33.3M | 1.7% | 1.7% | +98.8% |
| 19 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 488,651 | $33.0M | 0.0% | 1.7% | -0.7% |
| 20 | Nuveen, LLC | 420,664 | $28.4M | 0.0% | 1.5% | +33.1% |
| 21 | BANK OF AMERICA CORP /DE/ | 417,812 | $28.2M | 0.0% | 1.5% | -16.6% |
| 22 | CITADEL ADVISORS LLC | 394,373 | $26.6M | 0.0% | 1.4% | +68.9% |
| 23 | FEDERATED HERMES, INC. | 391,667 | $26.4M | 0.0% | 1.4% | +7.6% |
| 24 | Squarepoint Ops LLC | 324,446 | $21.9M | 0.0% | 1.1% | +21.2% |
| 25 | TWO SIGMA INVESTMENTS, LP | 262,995 | $17.8M | 0.0% | 0.9% | -43.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.