Who owns BeOne Medicines (ONC)
Which tracked institutional funds hold ONC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ONC company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-02). 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
62 tracked funds added or opened ONC while 67 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
ONC’s largest tracked holder by dollar value, BAKER BROS. ADVISORS LP, sizes it at 12.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 12.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ONC 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 274 tracked filers holding ONC, 164 increased or opened the position and 119 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 ONC 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 16
- Qube Research & Technologies Ltd$23M
- Life Cycle Investment Partners Ltd$21M
- Woodline Partners LP$15M
- Quadrature Capital Ltd$8M
- Engineers Gate Manager LP$5M
- SUPERSTRING CAPITAL MANAGEMENT LP$3M
Full exits 18
- HHLR ADVISORS, LTD.$307M
- NOMURA HOLDINGS INC$9M
- NORGES BANK$5M
- Rokos Capital Management LLP$4M
- ExodusPoint Capital Management, LP$3M
- DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main$3M
Largest adds
- Capital World Investors$159M
- CITADEL ADVISORS LLC$100M
- MILLENNIUM MANAGEMENT LLC$94M
- TWO SIGMA INVESTMENTS, LP$72M
- PRICE T ROWE ASSOCIATES INC /MD/$56M
- BlackRock, Inc.$40M
Largest trims
- FMR LLC$384M
- BAKER BROS. ADVISORS LP$105M
- PRIMECAP MANAGEMENT CO/CA/$50M
- UBS Group AG$50M
- Driehaus Capital Management LLC$36M
- Capital International Investors$30M
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 |
|---|---|---|---|---|
| BAKER BROS. ADVISORS LP added | 8,801,567 | $2.5B | 25.4% | 2026-Q2 |
| PRIMECAP MANAGEMENT CO/CA/ added | 5,007,931 | $1.4B | 14.5% | 2026-Q2 |
| Capital International Investors added | 4,210,221 | $1.2B | 12.2% | 2026-Q2 |
| FMR LLC trimmed | 2,478,527 | $706M | 7.2% | 2026-Q2 |
| Capital World Investors added | 2,249,582 | $641M | 6.5% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,425,517 | $406M | 4.1% | 2026-Q2 |
| Temasek Holdings (Private) Ltd trimmed | 845,729 | $241M | 2.4% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 758,752 | $216M | 2.2% | 2026-Q2 |
| BlackRock, Inc. added | 694,618 | $198M | 2.0% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 543,323 | $155M | 1.6% | 2026-Q2 |
| MORGAN STANLEY added | 497,437 | $142M | 1.4% | 2026-Q2 |
| Siren, L.L.C. | 465,000 | $133M | 1.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 439,336 | $125M | 1.3% | 2026-Q2 |
| Baird Financial Group, Inc. added | 368,978 | $105M | 1.1% | 2026-Q2 |
| Man Group plc added | 307,463 | $88M | 0.9% | 2026-Q2 |
| Capital International, Inc./CA/ added | 305,477 | $87M | 0.9% | 2026-Q2 |
| Candriam S.C.A. added | 289,735 | $82M | 0.8% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 286,552 | $82M | 0.8% | 2026-Q2 |
| UBS Group AG trimmed | 258,589 | $74M | 0.7% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 249,758 | $71M | 0.7% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 245,823 | $70M | 0.7% | 2026-Q2 |
| M&G PLC added | 223,445 | $64M | 0.6% | 2026-Q2 |
| Nuveen, LLC added | 201,062 | $57M | 0.6% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 188,405 | $55M | 0.6% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 185,544 | $53M | 0.5% | 2026-Q2 |
| MARSHALL WACE, LLP added | 177,987 | $51M | 0.5% | 2026-Q2 |
| CAPITAL INTERNATIONAL SARL added | 175,542 | $50M | 0.5% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 157,701 | $45M | 0.5% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 132,031 | $38M | 0.4% | 2026-Q2 |
| Lansforsakringar Fondforvaltning AB (publ) new | 123,352 | $3M | 0.0% | 2026-Q2 |
| Artisan Partners Limited Partnership trimmed | 115,374 | $33M | 0.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 101,980 | $29M | 0.3% | 2026-Q2 |
| JENNISON ASSOCIATES LLC trimmed | 100,698 | $29M | 0.3% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 90,348 | $26M | 0.3% | 2026-Q2 |
| Patient Square Capital LP added | 90,020 | $26M | 0.3% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 81,279 | $23M | 0.2% | 2026-Q2 |
| Squarepoint Ops LLC added | 78,561 | $22M | 0.2% | 2026-Q2 |
| CAPITAL INTERNATIONAL LTD /CA/ added | 77,161 | $22M | 0.2% | 2026-Q2 |
| Life Cycle Investment Partners Ltd new | 73,048 | $21M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 71,861 | $20M | 0.2% | 2026-Q2 |
| ABN AMRO INVESTMENT SOLUTIONS added | 65,524 | $19M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 60,525 | $17M | 0.2% | 2026-Q2 |
| Legal & General Group Plc added | 59,890 | $17M | 0.2% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 59,831 | $17M | 0.2% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP trimmed | 55,002 | $16M | 0.2% | 2026-Q2 |
| Woodline Partners LP trimmed | 54,064 | $15M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 53,086 | $15M | 0.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 46,733 | $13M | 0.1% | 2026-Q2 |
| BARINGS LLC | 42,815 | $12M | 0.1% | 2026-Q2 |
| SEB Asset Management AB trimmed | 41,179 | $12M | 0.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 39,647 | $11M | 0.1% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 37,070 | $11M | 0.1% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 36,379 | $10M | 0.1% | 2026-Q2 |
| OPPENHEIMER ASSET MANAGEMENT INC. added | 35,781 | $10M | 0.1% | 2026-Q2 |
| Driehaus Capital Management LLC trimmed | 35,504 | $10M | 0.1% | 2026-Q2 |
| Atle Fund Management AB trimmed | 35,180 | $10M | 0.1% | 2026-Q2 |
| Fiera Capital Corp added | 34,516 | $10M | 0.1% | 2026-Q2 |
| Mirae Asset Global Investments Co., Ltd. added | 33,808 | $10M | 0.1% | 2026-Q2 |
| EDMOND DE ROTHSCHILD HOLDING S.A. trimmed | 33,660 | $10M | 0.1% | 2026-Q2 |
| ASSETMARK, INC added | 32,399 | $9M | 0.1% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 29,641 | $9M | 0.1% | 2026-Q2 |
| AIA Group Ltd added | 29,282 | $8M | 0.1% | 2026-Q2 |
| Quadrature Capital Ltd added | 29,203 | $8M | 0.1% | 2026-Q2 |
| Slow Capital, Inc. trimmed | 28,237 | $8M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 27,886 | $8M | 0.1% | 2026-Q2 |
| BARCLAYS PLC added | 27,716 | $8M | 0.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 27,617 | $8M | 0.1% | 2026-Q2 |
| Capital Group Private Client Services, Inc. trimmed | 23,206 | $7M | 0.1% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 22,738 | $6M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 22,065 | $6M | 0.1% | 2026-Q2 |
| Asset Management One Co., Ltd. | 21,346 | $6M | 0.1% | 2026-Q2 |
| Trexquant Investment LP added | 20,683 | $6M | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 20,273 | $6M | 0.1% | 2026-Q2 |
| Erste Asset Management GmbH trimmed | 20,100 | $6M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 19,814 | $6M | 0.1% | 2026-Q2 |
| CAPITAL GROUP INVESTMENT MANAGEMENT PTE. LTD. added | 16,840 | $5M | 0.0% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 16,302 | $5M | 0.0% | 2026-Q2 |
| Nan Fung Group Holdings Ltd | 15,722 | $4M | 0.0% | 2026-Q2 |
| XTX Topco Ltd added | 15,064 | $4M | 0.0% | 2026-Q2 |
| Tidal Investments LLC added | 13,561 | $4M | 0.0% | 2026-Q2 |
| Creative Planning added | 12,703 | $4M | 0.0% | 2026-Q2 |
| GUGGENHEIM CAPITAL LLC added | 12,352 | $4M | 0.0% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC | 12,346 | $4M | 0.0% | 2026-Q2 |
| SUPERSTRING CAPITAL MANAGEMENT LP added | 12,273 | $3M | 0.0% | 2026-Q2 |
| ADAR1 Capital Management, LLC | 11,701 | $3M | 0.0% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 11,028 | $3M | 0.0% | 2026-Q2 |
| Pinpoint Asset Management (Singapore) Pte. Ltd. added | 11,009 | $3M | 0.0% | 2026-Q2 |
| Crossmark Global Holdings, Inc. added | 10,755 | $3M | 0.0% | 2026-Q2 |
| Bellevue Group AG added | 10,474 | $3M | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 9,798 | $3M | 0.0% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 9,442 | $3M | 0.0% | 2026-Q2 |
| State of Wyoming new | 8,698 | $2M | 0.0% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 8,175 | $18M | 0.2% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 7,786 | $2M | 0.0% | 2026-Q2 |
| Mitsubishi UFJ Trust & Banking Corp added | 7,573 | $2M | 0.0% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO trimmed | 7,498 | $2M | 0.0% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 7,461 | $2M | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 6,865 | $2M | 0.0% | 2026-Q2 |
| B. Metzler seel. Sohn & Co. AG added | 6,706 | $2M | 0.0% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 6,502 | $2M | 0.0% | 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.