Who owns Arvinas (ARVN)
Which tracked institutional funds hold ARVN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ARVN 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
26 tracked funds added or opened ARVN while 61 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
ARVN’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes ARVN more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ARVN 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 194 tracked filers holding ARVN, 111 increased or opened the position and 101 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 ARVN 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 6
- Hillsdale Investment Management Inc.$6M
- Arbiter Partners Capital Management LLC$2M
- RENAISSANCE TECHNOLOGIES LLC$2M
- OCCUDO QUANTITATIVE STRATEGIES LP$1M
- Verition Fund Management LLC$702K
- Engineers Gate Manager LP$601K
Full exits 19
- ACADIAN ASSET MANAGEMENT LLC$10M
- Vestal Point Capital, LP$10M
- NORGES BANK$7M
- TANG CAPITAL MANAGEMENT LLC$6M
- SUPERSTRING CAPITAL MANAGEMENT LP$3M
- Brummer Multi-Strategy AB$3M
Largest adds
- Nextech Invest Ltd.$11M
- UBS Group AG$3M
- ARMISTICE CAPITAL, LLC$2M
- AQR CAPITAL MANAGEMENT LLC$2M
- FMR LLC$2M
- TWO SIGMA INVESTMENTS, LP$2M
Largest trims
- TCG Crossover Management, LLC$19M
- D. E. Shaw & Co., Inc.$10M
- BlackRock, Inc.$9M
- Pfizer Inc$7M
- VANGUARD PORTFOLIO MANAGEMENT LLC$7M
- VANGUARD CAPITAL MANAGEMENT LLC$6M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 7,609,123 | $63M | 14.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 4,123,399 | $34M | 7.6% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 3,495,153 | $29M | 6.4% | 2026-Q2 |
| Pfizer Inc | 3,457,815 | $28M | 6.1% | 2026-Q2 |
| ARMISTICE CAPITAL, LLC added | 2,796,000 | $23M | 5.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 2,714,163 | $23M | 5.0% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 2,573,447 | $21M | 4.7% | 2026-Q2 |
| STATE STREET CORP added | 2,196,872 | $18M | 4.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,667,265 | $14M | 3.1% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 1,592,276 | $13M | 2.9% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 1,412,643 | $12M | 2.6% | 2026-Q2 |
| FEDERATED HERMES, INC. added | 1,356,032 | $11M | 2.5% | 2026-Q2 |
| Nextech Invest Ltd. added | 1,122,713 | $17M | 3.8% | 2026-Q2 |
| Hillsdale Investment Management Inc. new | 750,900 | $6M | 1.4% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 728,147 | $6M | 1.3% | 2026-Q2 |
| TCG Crossover Management, LLC trimmed | 707,098 | $6M | 1.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 654,909 | $5M | 1.2% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 640,811 | $5M | 1.2% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 620,973 | $5M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 615,296 | $5M | 1.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 601,873 | $5M | 1.1% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 589,238 | $5M | 1.1% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 574,011 | $5M | 1.1% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 542,174 | $5M | 1.0% | 2026-Q2 |
| MORGAN STANLEY trimmed | 502,755 | $4M | 0.9% | 2026-Q2 |
| NORDEA INVESTMENT MANAGEMENT AB added | 476,196 | $4M | 0.9% | 2026-Q2 |
| UBS Group AG added | 444,674 | $4M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 427,224 | $4M | 0.8% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 426,415 | $4M | 0.8% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 366,423 | $3M | 0.7% | 2026-Q2 |
| FMR LLC added | 365,206 | $3M | 0.7% | 2026-Q2 |
| Ikarian Capital, LLC | 358,257 | $3M | 0.7% | 2026-Q2 |
| Nantahala Capital Management, LLC | 300,000 | $2M | 0.6% | 2026-Q2 |
| Jump Financial, LLC added | 296,168 | $2M | 0.5% | 2026-Q2 |
| Arbiter Partners Capital Management LLC trimmed | 294,594 | $2M | 0.5% | 2026-Q2 |
| Man Group plc added | 256,104 | $2M | 0.5% | 2026-Q2 |
| Bank of New York Mellon Corp added | 254,997 | $2M | 0.5% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 252,939 | $2M | 0.5% | 2026-Q2 |
| Invesco Ltd. trimmed | 247,920 | $2M | 0.5% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 215,345 | $2M | 0.4% | 2026-Q2 |
| Squarepoint Ops LLC added | 201,822 | $2M | 0.4% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 185,347 | $2M | 0.3% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 180,000 | $1M | 0.3% | 2026-Q2 |
| Rangeley Capital, LLC trimmed | 175,590 | $1M | 0.3% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 167,056 | $1M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 166,222 | $1M | 0.3% | 2026-Q2 |
| Susquehanna Portfolio Strategies, LLC trimmed | 158,285 | $1M | 0.3% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 151,167 | $1M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 141,266 | $1M | 0.3% | 2026-Q2 |
| Nuveen, LLC trimmed | 138,776 | $1M | 0.3% | 2026-Q2 |
| OCCUDO QUANTITATIVE STRATEGIES LP new | 124,648 | $1M | 0.2% | 2026-Q2 |
| LPL Financial LLC added | 113,664 | $945K | 0.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 110,771 | $921K | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 109,966 | $914K | 0.2% | 2026-Q2 |
| Swiss National Bank | 108,000 | $897K | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 106,411 | $884K | 0.2% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 104,772 | $885K | 0.2% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 101,397 | $843K | 0.2% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 97,611 | $811K | 0.2% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 94,817 | $788K | 0.2% | 2026-Q2 |
| Verition Fund Management LLC trimmed | 84,477 | $702K | 0.2% | 2026-Q2 |
| Tidal Investments LLC added | 84,124 | $699K | 0.2% | 2026-Q2 |
| Tema ETFs LLC added | 84,124 | $699K | 0.2% | 2026-Q2 |
| BARCLAYS PLC added | 83,925 | $697K | 0.2% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC | 82,482 | $685K | 0.2% | 2026-Q2 |
| CAXTON ASSOCIATES LLP trimmed | 82,313 | $684K | 0.2% | 2026-Q2 |
| Graham Capital Management, L.P. added | 81,364 | $676K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 78,147 | $649K | 0.1% | 2026-Q2 |
| MANGROVE PARTNERS IM, LLC added | 76,220 | $633K | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP added | 72,321 | $601K | 0.1% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 68,456 | $569K | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP trimmed | 66,796 | $555K | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 63,820 | $676K | 0.1% | 2026-Q2 |
| Headlands Technologies LLC trimmed | 60,436 | $502K | 0.1% | 2026-Q2 |
| Stonepine Capital Management, LLC added | 60,000 | $499K | 0.1% | 2026-Q2 |
| GLOBEFLEX CAPITAL L P | 59,331 | $493K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 58,263 | $484K | 0.1% | 2026-Q2 |
| ADAR1 Capital Management, LLC | 57,591 | $479K | 0.1% | 2026-Q2 |
| Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance Group | 57,500 | $478K | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 55,093 | $458K | 0.1% | 2026-Q2 |
| Longaeva Partners L.P. added | 52,939 | $440K | 0.1% | 2026-Q2 |
| ExodusPoint Capital Management, LP trimmed | 50,933 | $423K | 0.1% | 2026-Q2 |
| STRS OHIO added | 49,300 | $410K | 0.1% | 2026-Q2 |
| EntryPoint Capital, LLC added | 48,122 | $400K | 0.1% | 2026-Q2 |
| FOX RUN MANAGEMENT, L.L.C. added | 47,916 | $398K | 0.1% | 2026-Q2 |
| Yelin Lapidot Holdings Management Ltd. | 46,665 | $388K | 0.1% | 2026-Q2 |
| Legal & General Group Plc added | 44,259 | $368K | 0.1% | 2026-Q2 |
| Virtus Investment Advisers, LLC added | 43,166 | $359K | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 43,045 | $358K | 0.1% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 41,445 | $344K | 0.1% | 2026-Q2 |
| Quinn Opportunity Partners LLC | 41,263 | $343K | 0.1% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 40,372 | $335K | 0.1% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 38,501 | $320K | 0.1% | 2026-Q2 |
| VIRGINIA RETIREMENT SYSTEMS ET Al trimmed | 37,350 | $310K | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 37,082 | $308K | 0.1% | 2026-Q2 |
| DRW Securities, LLC new | 36,309 | $302K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 35,532 | $295K | 0.1% | 2026-Q2 |
| Creative Planning trimmed | 35,029 | $291K | 0.1% | 2026-Q2 |
| Jain Global LLC added | 34,108 | $283K | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 33,536 | $279K | 0.1% | 2026-Q2 |
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.