Artiva BiotherapeuticsARTV
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 40 institutions reported holding Artiva Biotherapeutics Inc. (ARTV) in their 13F filings, up 6 from Q4 2025. 10 opened new positions and 5 sold out. The largest holders were Ra Capital Management, L.P. ($63.5M), 5AM Venture Management, LLC ($15.2M) and Venrock Adviser, LLC ($10.4M). 3 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Artiva Biotherapeutics Inc.
- CUSIP
- 04317A107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 10 | $2.2M |
| Exits | 5 | $511K |
All 13F filers, Q4 2025 → Q1 2026: 337,764 shares bought and 453,910 shares sold, net −116,146 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 40 holders
| Ra Capital Management, L.P. | 0.67% | No change | 9,853,302 | $63.5M |
| 5AM Venture Management, LLC | 4.21% | No change | 2,353,304 | $15.2M |
| Venrock Adviser, LLC | 0.39% | No change | 1,609,569 | $10.4M |
| venBio Partners LLC | 1.22% | Reduce -18.1% | 531,337 | $3.4M |
| Franklin Resources Inc. | 0.00% | No change | 520,327 | $3.4M |
| Revelation Capital Management, LLC | 2.86% | No change | 299,311 | $1.9M |
| BlackRock, Inc. | 0.00% | Add +0.4% | 213,388 | $1.4M |
| Vanguard Capital Management LLC | 0.00% | — | 207,686 | $1.3M |
| Wellington Management Group LLP | 0.00% | No change | 194,108 | $1.3M |
| Propel Bio Management, LLC | 0.60% | New | 146,369 | $950K |
| Millennium Management | 0.00% | Reduce -43.2% | 123,270 | $794K |
| Two Sigma Investments, LP | 0.00% | Reduce -20.6% | 115,041 | $741K |
| Geode Capital Management, LLC | 0.00% | Add +0.6% | 101,695 | $655K |
| Alyeska Investment Group, L.P. | 0.00% | No change | 100,000 | $644K |
| Renaissance Technologies | 0.00% | Reduce -31.1% | 80,038 | $515K |
| Jane Street Group, LLC | 0.00% | Reduce -2.9% | 39,496 | $254K |
| State Street Corp. | 0.00% | No change | 35,824 | $231K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 35,000 | $225K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 32,810 | $211K |
| Panagora Asset Management Inc. | 0.00% | New | 30,702 | $198K |
| Velan Capital Investment Management LP | 0.10% | New | 25,000 | $161K |
| Simplify Asset Management Inc. | 0.00% | New | 23,230 | $150K |
| Sanctuary Advisors, LLC | 0.00% | New | 21,581 | $139K |
| Bailard, Inc. | 0.00% | New | 20,700 | $133K |
| Dimensional Fund Advisors LP | 0.00% | New | 20,370 | $131K |
| XTX Topco Ltd | 0.00% | New | 20,270 | $131K |
| Morgan Stanley | 0.00% | Reduce -39.5% | 16,377 | $105K |
| Citadel Advisors | 0.00% | New | 15,870 | $102K |
| Northern Trust Corp. | 0.00% | New | 12,208 | $79K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -4.9% | 11,465 | $74K |
| OMERS ADMINISTRATION Corp | 0.00% | Reduce -46.0% | 11,400 | $73K |
| Russell Investments Group, Ltd. | 0.00% | No change | 5,491 | $35K |
| FMR LLC | 0.00% | Reduce -0.8% | 3,529 | $23K |
| UBS Group AG | 0.00% | Reduce -95.9% | 1,527 | $10K |
| Wells Fargo & Company | 0.00% | No change | 1,500 | $10K |
| Mark Sheptoff Financial Planning, LLC | 0.00% | No change | 400 | $4K |
| BNP Paribas Financial Markets | 0.00% | No change | 542 | $3K |
| JPMorgan Chase & Co. | 0.00% | Add +19.3% | 223 | $1K |
| Royal Bank of Canada | 0.00% | Reduce -44.5% | 188 | $1K |
| Osaic Holdings, Inc. | 0.00% | Reduce -43.8% | 18 | $116 |
"% of holder's portfolio" is ARTV's weight in each manager's 13F, not the share of Artiva Biotherapeutics Inc. the manager owns.