Who owns Artiva Biotherapeutics (ARTV)
Which tracked institutional funds hold ARTV, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ARTV company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on ARTV is one-sided between 2026-Q1 and 2026-Q2: 34 added or opened and 2 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ARTV’s largest tracked holder by dollar value, RA CAPITAL MANAGEMENT, L.P., sizes it at 1.5% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ARTV divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 71 tracked filers holding ARTV, 63 increased or opened the position and 9 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ARTV between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 13
- VIKING GLOBAL INVESTORS LP$25M
- Blackstone Inc.$23M
- Caligan Partners LP$17M
- SAMSARA BIOCAPITAL, LLC$9M
- Blue Owl Capital Holdings LP$8M
- SILVERARC CAPITAL MANAGEMENT, LLC$5M
Full exits 2
- venBio Partners LLC$3M
- MILLENNIUM MANAGEMENT LLC$794K
Largest adds
- RA CAPITAL MANAGEMENT, L.P.$111M
- FRANKLIN RESOURCES INC$16M
- Venrock Adviser, LLC$9M
- VANGUARD CAPITAL MANAGEMENT LLC$8M
- 5AM Venture Management, LLC$8M
- CITADEL ADVISORS LLC$6M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. added | 17,955,642 | $174M | 43.6% | 2026-Q2 |
| VIKING GLOBAL INVESTORS LP new | 2,604,166 | $25M | 6.3% | 2026-Q2 |
| Blackstone Inc. new | 2,403,437 | $23M | 5.8% | 2026-Q2 |
| 5AM Venture Management, LLC | 2,353,304 | $23M | 5.7% | 2026-Q2 |
| Venrock Adviser, LLC added | 2,043,596 | $20M | 5.0% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 1,997,223 | $19M | 4.9% | 2026-Q2 |
| Caligan Partners LP new | 1,736,111 | $17M | 4.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 981,815 | $10M | 2.4% | 2026-Q2 |
| SAMSARA BIOCAPITAL, LLC added | 954,861 | $9M | 2.3% | 2026-Q2 |
| Blue Owl Capital Holdings LP new | 874,542 | $8M | 2.1% | 2026-Q2 |
| Propel Bio Management, LLC added | 696,436 | $7M | 1.7% | 2026-Q2 |
| BlackRock, Inc. added | 694,726 | $7M | 1.7% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 609,376 | $6M | 1.5% | 2026-Q2 |
| SILVERARC CAPITAL MANAGEMENT, LLC new | 525,000 | $5M | 1.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 353,845 | $3M | 0.9% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC new | 314,375 | $3M | 0.8% | 2026-Q2 |
| Nantahala Capital Management, LLC new | 300,000 | $3M | 0.7% | 2026-Q2 |
| Revelation Capital Management, LLC | 299,311 | $3M | 0.7% | 2026-Q2 |
| Alyeska Investment Group, L.P. added | 273,615 | $3M | 0.7% | 2026-Q2 |
| ACUTA CAPITAL PARTNERS, LLC added | 260,416 | $3M | 0.6% | 2026-Q2 |
| KVP Capital Advisors, LP new | 200,000 | $2M | 0.5% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP | 194,108 | $2M | 0.5% | 2026-Q2 |
| UBS Group AG added | 184,020 | $2M | 0.4% | 2026-Q2 |
| SEVEN GRAND MANAGERS, LLC new | 175,000 | $2M | 0.4% | 2026-Q2 |
| STATE STREET CORP added | 165,764 | $2M | 0.4% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 151,000 | $1M | 0.4% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 148,393 | $1M | 0.4% | 2026-Q2 |
| ADAR1 Capital Management, LLC new | 118,624 | $1M | 0.3% | 2026-Q2 |
| Simplify Asset Management Inc. added | 101,355 | $983K | 0.2% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 85,000 | $824K | 0.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 78,575 | $762K | 0.2% | 2026-Q2 |
| NORTHERN TRUST CORP added | 76,423 | $741K | 0.2% | 2026-Q2 |
| DAFNA Capital Management LLC new | 67,101 | $651K | 0.2% | 2026-Q2 |
| Quadrature Capital Ltd new | 49,345 | $479K | 0.1% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 44,815 | $435K | 0.1% | 2026-Q2 |
| XTX Topco Ltd added | 42,509 | $412K | 0.1% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 31,113 | $302K | 0.1% | 2026-Q2 |
| Velan Capital Investment Management LP | 25,000 | $242K | 0.1% | 2026-Q2 |
| Atom Investors LP new | 22,854 | $222K | 0.1% | 2026-Q2 |
| BAILARD, INC. | 20,700 | $201K | 0.1% | 2026-Q2 |
| Spark Investment Management LLC new | 16,500 | $160K | 0.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 15,780 | $153K | 0.0% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 14,855 | $144K | 0.0% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. new | 13,980 | $136K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC new | 11,978 | $116K | 0.0% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 11,896 | $115K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 6,100 | $59K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 5,861 | $57K | 0.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 5,480 | $53K | 0.0% | 2026-Q2 |
| State of Wyoming new | 4,588 | $45K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 4,191 | $40K | 0.0% | 2026-Q2 |
| FMR LLC added | 3,558 | $35K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 3,336 | $32K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 3,066 | $30K | 0.0% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 3,039 | $29K | 0.0% | 2026-Q2 |
| MORGAN STANLEY trimmed | 2,212 | $21K | 0.0% | 2026-Q2 |
| CITIGROUP INC trimmed | 2,143 | $21K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 2,136 | $21K | 0.0% | 2026-Q2 |
| Federation des caisses Desjardins du Quebec new | 2,000 | $19K | 0.0% | 2026-Q2 |
| China Universal Asset Management Co., Ltd. trimmed | 1,600 | $16K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 1,148 | $11K | 0.0% | 2026-Q2 |
| Legal & General Group Plc trimmed | 566 | $5K | 0.0% | 2026-Q2 |
| Steward Partners Investment Advisory, LLC new | 500 | $5K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. trimmed | 421 | $4K | 0.0% | 2026-Q2 |
| MARK SHEPTOFF FINANCIAL PLANNING, LLC | 400 | $4K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) trimmed | 247 | $2K | 0.0% | 2026-Q2 |
| US BANCORP \DE\ new | 235 | $2K | 0.0% | 2026-Q2 |
| Quarry LP new | 94 | $912 | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC trimmed | 72 | $698 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd new | 13 | $126 | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP new | 11 | $106 | 0.0% | 2026-Q2 |
| venBio Partners LLC trimmed | 531,337 | $3M | 0.9% | 2026-Q1 stale (1 quarter behind) |
| MILLENNIUM MANAGEMENT LLC trimmed | 123,270 | $794K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| JANE STREET GROUP, LLC trimmed | 39,496 | $254K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| PANAGORA ASSET MANAGEMENT INC new | 30,702 | $198K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Sanctuary Advisors, LLC new | 21,581 | $139K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| OMERS ADMINISTRATION Corp trimmed | 11,400 | $73K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| OSAIC HOLDINGS, INC. trimmed | 18 | $116 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC added | 246,006 | $1M | 0.3% | 2025-Q4 stale (2 quarters behind) |
| MARSHALL WACE, LLP added | 79,559 | $341K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Scientech Research LLC new | 27,757 | $119K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| PRELUDE CAPITAL MANAGEMENT, LLC trimmed | 10,691 | $46K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| BANK OF AMERICA CORP /DE/ trimmed | 113 | $484 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| NORGES BANK | 30,000 | $464K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. new | 39,133 | $112K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| HRT FINANCIAL LP trimmed | 26,953 | $77K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Qube Research & Technologies Ltd trimmed | 25,552 | $73K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Mirae Asset Global Investments Co., Ltd. added | 944 | $3K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| GF FUND MANAGEMENT CO. LTD. trimmed | 510 | $1K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| EverSource Wealth Advisors, LLC new | 159 | $456 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Cloud Capital Management, LLC new | 11 | — | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Woodline Partners LP | 283,124 | $428K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| Y-Intercept (Hong Kong) Ltd new | 31,567 | $48K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| Ground Swell Capital, LLC new | 24,849 | $38K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| Jain Global LLC new | 17,171 | $26K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 16,121 | $24K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| DEUTSCHE BANK AG\ trimmed | 3,383 | $5K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| NISA INVESTMENT ADVISORS, LLC added | 329 | $497 | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CWM, LLC trimmed | 10 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.