ARTV Artiva Biotherapeutics, Inc.
Artiva Biotherapeutics, Inc. (ARTV) Institutional Ownership
What the institutions did with ARTV 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 |
|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 18.0M | 44.1% |
| VIKING GLOBAL INVESTORS LP | 2.6M | 6.4% |
| Blackstone Inc. | 2.4M | 5.9% |
| 5AM Venture Management, LLC | 2.4M | 5.8% |
| Venrock Adviser, LLC | 2.0M | 5.0% |
| FRANKLIN RESOURCES INC | 2.0M | 4.9% |
| Caligan Partners LP | 1.7M | 4.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 981.8K | 2.4% |
| SAMSARA BIOCAPITAL, LLC | 954.9K | 2.3% |
| Blue Owl Capital Holdings LP | 874.5K | 2.2% |
| Propel Bio Management, LLC | 696.4K | 1.7% |
| BlackRock, Inc. | 694.7K | 1.7% |
| CITADEL ADVISORS LLC | 609.4K | 1.5% |
| Nantahala Capital Management, LLC | 600.0K | 1.5% |
| SILVERARC CAPITAL MANAGEMENT, LLC | 525.0K | 1.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 353.8K | 0.9% |
| BOOTHBAY FUND MANAGEMENT, LLC | 314.4K | 0.8% |
| Revelation Capital Management, LLC | 299.3K | 0.7% |
| Alyeska Investment Group, L.P. | 273.6K | 0.7% |
| ACUTA CAPITAL PARTNERS, LLC | 260.4K | 0.6% |
| KVP Capital Advisors, LP | 200.0K | 0.5% |
| WELLINGTON MANAGEMENT GROUP LLP | 194.1K | 0.5% |
| UBS Group AG | 184.0K | 0.5% |
| SEVEN GRAND MANAGERS, LLC | 175.0K | 0.4% |
| STATE STREET CORP | 165.8K | 0.4% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | Increased | 9.9M | 18.0M | +8.1M |
| VIKING GLOBAL INVESTORS LP | New | 0 | 2.6M | +2.6M |
| Blackstone Inc. | New | 0 | 2.4M | +2.4M |
| Caligan Partners LP | New | 0 | 1.7M | +1.7M |
| FRANKLIN RESOURCES INC | Increased | 520.3K | 2.0M | +1.5M |
| SAMSARA BIOCAPITAL, LLC | New | 0 | 954.9K | +954.9K |
| Blue Owl Capital Holdings LP | New | 0 | 874.5K | +874.5K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 207.7K | 981.8K | +774.1K |
| Nantahala Capital Management, LLC | New | 0 | 600.0K | +600.0K |
| CITADEL ADVISORS LLC | Increased | 15.9K | 609.4K | +593.5K |
| Propel Bio Management, LLC | Increased | 146.4K | 696.4K | +550.1K |
| venBio Partners LLC | Sold Out | 531.3K | 0 | -531.3K |
| SILVERARC CAPITAL MANAGEMENT, LLC | New | 0 | 525.0K | +525.0K |
| BlackRock, Inc. | Increased | 213.4K | 694.7K | +481.3K |
| Venrock Adviser, LLC | Increased | 1.6M | 2.0M | +434.0K |
| BOOTHBAY FUND MANAGEMENT, LLC | New | 0 | 314.4K | +314.4K |
| ACUTA CAPITAL PARTNERS, LLC | New | 0 | 260.4K | +260.4K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 101.7K | 353.8K | +252.2K |
| KVP Capital Advisors, LP | New | 0 | 200.0K | +200.0K |
| UBS Group AG | Increased | 1.5K | 184.0K | +182.5K |
| SEVEN GRAND MANAGERS, LLC | New | 0 | 175.0K | +175.0K |
| Alyeska Investment Group, L.P. | Increased | 100.0K | 273.6K | +173.6K |
| STATE STREET CORP | Increased | 35.8K | 165.8K | +129.9K |
| MILLENNIUM MANAGEMENT LLC | Sold Out | 123.3K | 0 | -123.3K |
| ADAR1 Capital Management, LLC | New | 0 | 118.6K | +118.6K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 32.8K | 148.4K | +115.6K |
| Simplify Asset Management Inc. | Increased | 23.2K | 101.4K | +78.1K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 80.0K | 151.0K | +71.0K |
| DAFNA Capital Management LLC | New | 0 | 67.1K | +67.1K |
| NORTHERN TRUST CORP | Increased | 12.2K | 76.4K | +64.2K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Increased | 35.0K | 85.0K | +50.0K |
| Quadrature Capital Ltd | New | 0 | 49.3K | +49.3K |
| JANE STREET GROUP, LLC | Sold Out | 39.5K | 0 | -39.5K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 115.0K | 78.6K | -36.5K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New | 0 | 31.1K | +31.1K |
| PANAGORA ASSET MANAGEMENT INC | Sold Out | 30.7K | 0 | -30.7K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 20.4K | 44.8K | +24.4K |
| ACADIAN ASSET MANAGEMENT LLC | New | 0 | 22.9K | +22.9K |
| Atom Investors LP | New | 0 | 22.9K | +22.9K |
| XTX Topco Ltd | Increased | 20.3K | 42.5K | +22.2K |
| Sanctuary Advisors, LLC | Sold Out | 21.6K | 0 | -21.6K |
| Spark Investment Management LLC | New | 0 | 16.5K | +16.5K |
| Squarepoint Ops LLC | New | 0 | 14.9K | +14.9K |
| MORGAN STANLEY | Reduced | 16.4K | 2.2K | -14.2K |
| ALLIANCEBERNSTEIN L.P. | New | 0 | 14.0K | +14.0K |
| Vanguard Global Advisers, LLC | New | 0 | 12.0K | +12.0K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | New | 0 | 11.9K | +11.9K |
| OMERS ADMINISTRATION Corp | Sold Out | 11.4K | 0 | -11.4K |
| NEW YORK STATE COMMON RETIREMENT FUND | New | 0 | 6.1K | +6.1K |
| State of Wyoming | New | 0 | 4.6K | +4.6K |
| GOLDMAN SACHS GROUP INC | Increased | 11.5K | 15.8K | +4.3K |
| WELLS FARGO & COMPANY/MN | Increased | 1.5K | 5.5K | +4.0K |
| JPMORGAN CHASE & CO | Increased | 223 | 4.2K | +4.0K |
| BARCLAYS PLC | New | 0 | 3.3K | +3.3K |
| RHUMBLINE ADVISERS | New | 0 | 3.0K | +3.0K |
| ROYAL BANK OF CANADA | Increased | 188 | 3.1K | +2.9K |
| CITIGROUP INC | New | 0 | 2.1K | +2.1K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | New | 0 | 2.1K | +2.1K |
| Federation des caisses Desjardins du Quebec | New | 0 | 2.0K | +2.0K |
| China Universal Asset Management Co., Ltd. | New | 0 | 1.6K | +1.6K |
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.