Who owns BioMarin Pharmaceutical Inc. (BMRN)
Which tracked institutional funds hold BMRN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BMRN company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 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
122 tracked funds added or opened BMRN while 180 trimmed or exited it between 2025-Q4 and 2026-Q1 — 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
BMRN’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes BMRN more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in BMRN 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 2025-Q4 and 2026-Q1, across 552 tracked filers holding BMRN, 296 increased or opened the position and 241 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
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 BMRN between the 2025-Q4 and 2026-Q1 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 42
- VANGUARD CAPITAL MANAGEMENT LLC$488M
- VANGUARD PORTFOLIO MANAGEMENT LLC$469M
- BALYASNY ASSET MANAGEMENT L.P.$77M
- Jones Hill Capital LP$72M
- VANGUARD FIDUCIARY TRUST CO$67M
- DEERFIELD MANAGEMENT COMPANY, L.P.$48M
Full exits 44
- VANGUARD GROUP INC$1.1B
- Brandywine Global Investment Management, LLC$56M
- Pacer Advisors, Inc.$56M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$51M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$26M
- Candriam S.C.A.$24M
Largest adds
- CITADEL ADVISORS LLC$174M
- FMR LLC$90M
- FRANKLIN RESOURCES INC$47M
- Capital Research Global Investors$46M
- Point72 Asset Management, L.P.$42M
- VIKING GLOBAL INVESTORS LP$40M
Largest trims
- NORGES BANK$214M
- BlackRock, Inc.$192M
- Squarepoint Ops LLC$88M
- Deep Track Capital, LP$72M
- MORGAN STANLEY$63M
- PRIMECAP MANAGEMENT CO/CA/$63M
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 |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 16,738,349 | $946M | 8.5% | 2026-Q1 |
| DODGE & COX trimmed | 14,561,759 | $823M | 7.4% | 2026-Q1 |
| PRIMECAP MANAGEMENT CO/CA/ trimmed | 14,194,005 | $802M | 7.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 8,643,164 | $488M | 4.4% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 8,298,475 | $469M | 4.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 7,675,552 | $429M | 3.8% | 2026-Q1 |
| STATE STREET CORP trimmed | 7,295,079 | $412M | 3.7% | 2026-Q1 |
| VIKING GLOBAL INVESTORS LP added | 7,062,077 | $399M | 3.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 4,512,634 | $255M | 2.3% | 2026-Q1 |
| NORGES BANK trimmed | 3,308,385 | $234M | 2.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 3,819,441 | $216M | 1.9% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 3,802,930 | $215M | 1.9% | 2026-Q1 |
| Vestal Point Capital, LP added | 3,575,000 | $202M | 1.8% | 2026-Q1 |
| FMR LLC added | 3,518,814 | $199M | 1.8% | 2026-Q1 |
| Capital Research Global Investors added | 3,491,386 | $197M | 1.8% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 3,010,308 | $170M | 1.5% | 2026-Q1 |
| Assenagon Asset Management S.A. added | 1,920,658 | $108M | 1.0% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 1,672,491 | $94M | 0.8% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,587,683 | $90M | 0.8% | 2026-Q1 |
| NORTHERN TRUST CORP added | 1,586,384 | $90M | 0.8% | 2026-Q1 |
| UBS Group AG trimmed | 1,496,852 | $85M | 0.8% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 1,362,752 | $77M | 0.7% | 2026-Q1 |
| MORGAN STANLEY trimmed | 1,321,665 | $75M | 0.7% | 2026-Q1 |
| Jones Hill Capital LP new | 1,268,390 | $72M | 0.6% | 2026-Q1 |
| DNB Asset Management AS trimmed | 1,221,387 | $69M | 0.6% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 1,199,206 | $68M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 1,194,118 | $67M | 0.6% | 2026-Q1 |
| Pictet Asset Management Holding SA trimmed | 1,193,661 | $67M | 0.6% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 1,173,516 | $66M | 0.6% | 2026-Q1 |
| Deep Track Capital, LP trimmed | 1,150,000 | $65M | 0.6% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 1,144,892 | $65M | 0.6% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,024,871 | $58M | 0.5% | 2026-Q1 |
| Hudson Bay Capital Management LP added | 974,776 | $55M | 0.5% | 2026-Q1 |
| Caisse de depot et placement du Quebec trimmed | 945,603 | $53M | 0.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 936,951 | $53M | 0.5% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 933,879 | $53M | 0.5% | 2026-Q1 |
| River Road Asset Management, LLC added | 917,612 | $52M | 0.5% | 2026-Q1 |
| LSV ASSET MANAGEMENT added | 884,800 | $50M | 0.4% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 857,010 | $48M | 0.4% | 2026-Q1 |
| DEERFIELD MANAGEMENT COMPANY, L.P. added | 851,556 | $48M | 0.4% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 850,819 | $48M | 0.4% | 2026-Q1 |
| Swedbank AB trimmed | 792,187 | $45M | 0.4% | 2026-Q1 |
| Sofinnova Investments, Inc. added | 781,982 | $44M | 0.4% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 716,523 | $40M | 0.4% | 2026-Q1 |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ added | 714,536 | $40M | 0.4% | 2026-Q1 |
| LOOMIS SAYLES & CO L P added | 713,795 | $40M | 0.4% | 2026-Q1 |
| Nuveen, LLC added | 705,198 | $40M | 0.4% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 689,721 | $39M | 0.3% | 2026-Q1 |
| EDMOND DE ROTHSCHILD HOLDING S.A. added | 686,030 | $39M | 0.3% | 2026-Q1 |
| Palo Alto Investors LP trimmed | 685,182 | $39M | 0.3% | 2026-Q1 |
| NOVO HOLDINGS A/S | 660,000 | $37M | 0.3% | 2026-Q1 |
| Soleus Capital Management, L.P. trimmed | 650,572 | $37M | 0.3% | 2026-Q1 |
| Thrivent Financial for Lutherans trimmed | 627,699 | $35M | 0.3% | 2026-Q1 |
| Freestone Grove Partners LP added | 606,187 | $34M | 0.3% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 606,224 | $34M | 0.3% | 2026-Q1 |
| Legal & General Group Plc trimmed | 575,186 | $32M | 0.3% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 574,945 | $32M | 0.3% | 2026-Q1 |
| BOONE CAPITAL MANAGEMENT LLC added | 547,871 | $31M | 0.3% | 2026-Q1 |
| Robeco Institutional Asset Management B.V. trimmed | 545,135 | $31M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 557,836 | $31M | 0.3% | 2026-Q1 |
| Krensavage Asset Management, LLC | 524,786 | $30M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 522,125 | $29M | 0.3% | 2026-Q1 |
| Eagle Health Investments LP added | 505,809 | $29M | 0.3% | 2026-Q1 |
| BRAIDWELL LP trimmed | 497,020 | $28M | 0.3% | 2026-Q1 |
| California Public Employees Retirement System trimmed | 490,715 | $28M | 0.2% | 2026-Q1 |
| Jefferies Financial Group Inc. added | 468,146 | $26M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 448,768 | $25M | 0.2% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP added | 441,444 | $25M | 0.2% | 2026-Q1 |
| Rubric Capital Management LP new | 440,560 | $25M | 0.2% | 2026-Q1 |
| Engineers Gate Manager LP added | 436,860 | $25M | 0.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 428,607 | $24M | 0.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 411,302 | $23M | 0.2% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 407,379 | $23M | 0.2% | 2026-Q1 |
| IEQ CAPITAL, LLC added | 401,610 | $23M | 0.2% | 2026-Q1 |
| Allianz Asset Management GmbH added | 400,020 | $23M | 0.2% | 2026-Q1 |
| CITIGROUP INC added | 393,895 | $22M | 0.2% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 379,596 | $21M | 0.2% | 2026-Q1 |
| Rockefeller Capital Management L.P. added | 372,197 | $21M | 0.2% | 2026-Q1 |
| Walleye Capital LLC added | 364,246 | $21M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 361,100 | $20M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 359,702 | $20M | 0.2% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 331,373 | $19M | 0.2% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 17,834,015 | $1.1B | 9.5% | 2025-Q4 stale |
| Elliott Investment Management L.P. | 3,500,338 | $247M | 2.2% | 2025-Q1 stale |
| Brandywine Global Investment Management, LLC added | 945,847 | $56M | 0.5% | 2025-Q4 stale |
| Pacer Advisors, Inc. added | 937,356 | $56M | 0.5% | 2025-Q4 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 849,744 | $51M | 0.5% | 2025-Q4 stale |
| Aberdeen Group plc trimmed | 902,751 | $49M | 0.4% | 2025-Q3 stale |
| FULLER & THALER ASSET MANAGEMENT, INC. trimmed | 890,418 | $48M | 0.4% | 2025-Q3 stale |
| Camber Capital Management LP added | 600,000 | $33M | 0.3% | 2025-Q2 stale |
| Korea Investment CORP added | 519,903 | $28M | 0.3% | 2025-Q3 stale |
| PGGM Investments | 517,991 | $28M | 0.3% | 2025-Q3 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 444,890 | $26M | 0.2% | 2025-Q4 stale |
| Candriam S.C.A. trimmed | 408,426 | $24M | 0.2% | 2025-Q4 stale |
| Aware Super Pty Ltd as trustee of Aware Super added | 405,767 | $22M | 0.2% | 2025-Q3 stale |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 390,637 | $21M | 0.2% | 2025-Q3 stale |
| AXA S.A. trimmed | 360,320 | $20M | 0.2% | 2025-Q2 stale |
| AXA Investment Managers S.A. new | 362,949 | $20M | 0.2% | 2025-Q3 stale |
| MOORE CAPITAL MANAGEMENT, LP added | 325,000 | $19M | 0.2% | 2025-Q4 stale |
| MARSHALL WACE, LLP added | 310,891 | $18M | 0.2% | 2025-Q4 stale |
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.