ANAB AnaptysBio, Inc
AnaptysBio, Inc (ANAB) Institutional Ownership
What the institutions did with ANAB last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| EcoR1 Capital, LLC | 7.9M | 26.2% |
| BlackRock, Inc. | 1.8M | 6.1% |
| TANG CAPITAL MANAGEMENT LLC | 1.3M | 4.4% |
| STATE STREET CORP | 1.3M | 4.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 906.2K | 3.0% |
| Affinity Asset Advisors, LLC | 826.1K | 2.7% |
| Sanofi | 821.9K | 2.7% |
| MILLENNIUM MANAGEMENT LLC | 807.3K | 2.7% |
| Woodline Partners LP | 717.0K | 2.4% |
| 683 Capital Management, LLC | 660.0K | 2.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 637.9K | 2.1% |
| Palo Alto Investors LP | 603.5K | 2.0% |
| GOLDMAN SACHS GROUP INC | 584.1K | 1.9% |
| First Light Asset Management, LLC | 582.0K | 1.9% |
| D. E. Shaw & Co., Inc. | 539.7K | 1.8% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 527.9K | 1.8% |
| Apis Capital Advisors, LLC | 497.0K | 1.6% |
| Sofinnova Investments, Inc. | 493.5K | 1.6% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 488.7K | 1.6% |
| Nuveen, LLC | 420.7K | 1.4% |
| BANK OF AMERICA CORP /DE/ | 417.8K | 1.4% |
| CITADEL ADVISORS LLC | 394.4K | 1.3% |
| FEDERATED HERMES, INC. | 391.7K | 1.3% |
| Squarepoint Ops LLC | 324.4K | 1.1% |
| TWO SIGMA INVESTMENTS, LP | 263.0K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| MORGAN STANLEY | Reduced | 993.9K | 257.1K | -736.8K |
| Woodline Partners LP | Increased | 344.3K | 717.0K | +372.8K |
| MILLENNIUM MANAGEMENT LLC | Increased | 475.6K | 807.3K | +331.7K |
| Synergy Asset Management, LLC | Sold Out | 317.1K | 0 | -317.1K |
| STATE STREET CORP | Increased | 992.4K | 1.3M | +293.7K |
| Apis Capital Advisors, LLC | Increased | 238.0K | 497.0K | +259.0K |
| FIRST TRUST ADVISORS LP | New | 0 | 259.0K | +259.0K |
| GOLDMAN SACHS GROUP INC | Increased | 332.7K | 584.1K | +251.3K |
| Sofinnova Investments, Inc. | Increased | 248.3K | 493.5K | +245.3K |
| FMR LLC | Reduced | 472.7K | 240.5K | -232.2K |
| Empowered Funds, LLC | New | 0 | 206.0K | +206.0K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 465.1K | 263.0K | -202.1K |
| DIMENSIONAL FUND ADVISORS LP | New | 0 | 185.4K | +185.4K |
| Greenhaven Road Investment Management, L.P. | New | 0 | 171.1K | +171.1K |
| BlackRock, Inc. | Increased | 1.7M | 1.8M | +162.7K |
| CITADEL ADVISORS LLC | Increased | 233.5K | 394.4K | +160.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 520.2K | 637.9K | +117.6K |
| MACKENZIE FINANCIAL CORP | Increased | 33.7K | 151.0K | +117.3K |
| Affinity Asset Advisors, LLC | Reduced | 940.0K | 826.1K | -113.9K |
| Nuveen, LLC | Increased | 316.1K | 420.7K | +104.6K |
| HSBC HOLDINGS PLC | Increased | 125.7K | 216.9K | +91.2K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 97.0K | 8.0K | -89.0K |
| JANE STREET GROUP, LLC | Sold Out | 86.0K | 0 | -86.0K |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | New | 0 | 83.9K | +83.9K |
| BANK OF AMERICA CORP /DE/ | Reduced | 501.1K | 417.8K | -83.3K |
| Invesco Ltd. | Increased | 121.1K | 202.1K | +81.0K |
| Irenic Capital Management LP | New | 0 | 70.4K | +70.4K |
| JPMORGAN CHASE & CO | Increased | 11.6K | 80.2K | +68.6K |
| UBS Group AG | Increased | 79.7K | 146.8K | +67.2K |
| VICTORY CAPITAL MANAGEMENT INC | Increased | 108.2K | 169.2K | +61.0K |
| Squarepoint Ops LLC | Increased | 267.7K | 324.4K | +56.7K |
| Fisher Asset Management, LLC | Sold Out | 56.6K | 0 | -56.6K |
| Point72 Asset Management, L.P. | Sold Out | 55.3K | 0 | -55.3K |
| HighMark Wealth Management LLC | Reduced | 94.1K | 39.7K | -54.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 853.2K | 906.2K | +53.1K |
| Trexquant Investment LP | Reduced | 85.2K | 35.4K | -49.8K |
| Penserra Capital Management LLC | Sold Out | 43.4K | 0 | -43.4K |
| Eversept Partners, LP | Increased | 27.1K | 70.0K | +42.9K |
| SG Americas Securities, LLC | Increased | 24.9K | 66.7K | +41.9K |
| FRANKLIN RESOURCES INC | Increased | 65.8K | 106.9K | +41.1K |
| HRT FINANCIAL LP | Sold Out | 40.5K | 0 | -40.5K |
| D. E. Shaw & Co., Inc. | Reduced | 579.3K | 539.7K | -39.6K |
| CAPITAL FUND MANAGEMENT S.A. | New | 0 | 39.1K | +39.1K |
| 683 Capital Management, LLC | Increased | 625.0K | 660.0K | +35.0K |
| Palo Alto Investors LP | Reduced | 638.2K | 603.5K | -34.7K |
| STATE OF WISCONSIN INVESTMENT BOARD | Increased | 27.6K | 61.8K | +34.1K |
| Atom Investors LP | New | 0 | 33.9K | +33.9K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Increased | 28.6K | 62.3K | +33.7K |
| Virtu Financial LLC | Sold Out | 33.3K | 0 | -33.3K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 90.9K | 58.3K | -32.6K |
| Voleon Capital Management LP | New | 0 | 31.4K | +31.4K |
| Susquehanna Portfolio Strategies, LLC | Reduced | 35.9K | 4.9K | -31.1K |
| Aquatic Capital Management LLC | New | 0 | 30.8K | +30.8K |
| XTX Topco Ltd | Reduced | 50.5K | 21.4K | -29.1K |
| SummitTX Capital, L.P. | New | 0 | 28.8K | +28.8K |
| Engineers Gate Manager LP | Sold Out | 27.8K | 0 | -27.8K |
| FEDERATED HERMES, INC. | Increased | 364.1K | 391.7K | +27.5K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold Out | 26.6K | 0 | -26.6K |
| Qube Research & Technologies Ltd | Reduced | 254.7K | 228.8K | -26.0K |
| CITIGROUP INC | Increased | 73.4K | 99.1K | +25.7K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.