Who owns Biogen Idec?
- Ticker: BIIB
- CUSIP Number: 09062X103
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Analyze quarterly positions in Biogen Idec with up to 7 years of data, all consolidated into one spreadsheet
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Top investors of Biogen Idec stock
Who bought or sold Biogen Idec this quarter?
| Fund or Company Name | Shares Held | Valued At | Change in Shares | As Of | Actions |
|---|---|---|---|---|---|
| Vanguard Group | 17M | $3.1B | 1% | Dec 2025 |
|
| BlackRock | 16M | $2.9B | 8% | Mar 2026 |
|
| PRIMECAP Management Company | 15M | $2.7B | 0% | Mar 2026 |
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| Vanguard Capital Management | 9.5M | $1.7B | 100% | Mar 2026 |
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| FMR | 9.4M | $1.7B | 632% | Dec 2025 |
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| State Street Corporation | 7.2M | $1.3B | -2% | Dec 2025 |
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| Vanguard Portfolio Management | 6.5M | $1.2B | 100% | Mar 2026 |
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| Geode Capital Management | 4.3M | $793M | 3% | Mar 2026 |
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| Wellington Management Company | 3.6M | $625M | -16% | Dec 2025 |
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| Susquehanna International | 2.3M | $408M | 11% | Dec 2025 |
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| Morgan Stanley | 2.2M | $398M | -7% | Mar 2026 |
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| AQR Capital Management | 1.9M | $346M | 26% | Mar 2026 |
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| Invesco | 1.7M | $320M | 5% | Mar 2026 |
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| Robeco Investment Management | 1.7M | $312M | -1% | Mar 2026 |
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| Barclays | 1.5M | $263M | 9% | Dec 2025 |
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| Northern Trust | 1.4M | $255M | -4% | Dec 2025 |
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| Ubs Global Asset Management Americas | 1.4M | $253M | -1% | Mar 2026 |
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| Legal & General Group | 1.3M | $248M | -8% | Mar 2026 |
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| Goldman Sachs Group | 1.2M | $216M | 2% | Mar 2026 |
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| T. Rowe Price Investment Management | 1.2M | $206M | 10% | Dec 2025 |
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| Bank of America Corporation | 1.2M | $212M | 100% | Mar 2026 |
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| Charles Schwab Investment Management | 1.1M | $201M | 2% | Dec 2025 |
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| Dimensional Fund Advisors | 1.1M | $198M | 12% | Mar 2026 |
|
| Van Eck Associates Corp. | 1.1M | $188M | 0% | Dec 2025 |
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| Deutsche Bank Aktiengesellschaft | 1.1M | $195M | 12% | Mar 2026 |
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| Pictet Asset Management Holding SA | 913k | $168M | -4% | Mar 2026 |
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| Vanguard Fiduciary Trust | 826k | $151M | 100% | Mar 2026 |
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| Point72 Asset Management | 814k | $149M | -79% | Mar 2026 |
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| Alyeska Investment Group | 805k | $148M | -21% | Mar 2026 |
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| Amundi | 791k | $145M | 38% | Mar 2026 |
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| Bank of New York Mellon | 789k | $145M | -3% | Mar 2026 |
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| Robeco Institutional Asset Management B V | 763k | $140M | 25% | Mar 2026 |
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| Fred Alger Management | 733k | $134M | -8% | Mar 2026 |
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| Massachusetts Financial Services | 713k | $125M | -2% | Dec 2025 |
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| Employees Provident Fund Board | 704k | $129M | 0% | Mar 2026 |
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| First Trust Advisors | 674k | $124M | 19% | Mar 2026 |
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| Balyasny Asset Management | 650k | $119M | -7% | Mar 2026 |
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| AustralianSuper Pty | 616k | $113M | 29% | Mar 2026 |
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| Caisse de depot et placement du Quebec | 589k | $104M | 3% | Dec 2025 |
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| Artemis Investment Management | 572k | $105M | 152% | Mar 2026 |
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| Royal Bank of Canada | 531k | $97M | 7% | Mar 2026 |
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| Citadel Advisors | 531k | $97M | -13% | Mar 2026 |
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| UBS Group | 527k | $97M | -31% | Mar 2026 |
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| Zurcher Kantonalbank | 522k | $96M | 15% | Mar 2026 |
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| Citigroup | 522k | $96M | 100% | Mar 2026 |
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| Causeway Capital Management | 521k | $92M | -8% | Dec 2025 |
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| Bnp Paribas Arbitrage, Snc | 471k | $86M | -7% | Mar 2026 |
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| Hsbc Holdings | 469k | $86M | -7% | Mar 2026 |
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| Swiss National Bank | 431k | $79M | 7% | Mar 2026 |
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| National Pension Service | 402k | $74M | 40% | Mar 2026 |
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| Renaissance Technologies | 399k | $70M | -59% | Dec 2025 |
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| Marshall Wace | 387k | $68M | -57% | Dec 2025 |
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| Candriam Luxembourg S.C.A. | 382k | $70M | 16% | Mar 2026 |
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| Patient Capital Management | 380k | $70M | -34% | Mar 2026 |
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| Nuveen | 359k | $66M | -4% | Mar 2026 |
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| Sumitomo Mitsui Trust Holdings | 356k | $65M | -4% | Mar 2026 |
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| Vanguard Global Advisers | 344k | $63M | 100% | Mar 2026 |
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| CalPERS | 341k | $63M | 3% | Mar 2026 |
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| Mitsubishi UFJ Asset Management | 334k | $61M | 5% | Mar 2026 |
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| LSV Asset Management | 334k | $61M | 5% | Mar 2026 |
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| Fil | 320k | $56M | 4% | Dec 2025 |
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| Man Group | 319k | $58M | -6% | Mar 2026 |
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| Fisher Investments | 313k | $57M | 7% | Mar 2026 |
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| Gotham Asset Management | 298k | $55M | 8% | Mar 2026 |
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| Adage Capital Partners GP | 294k | $52M | -11% | Dec 2025 |
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| Jane Street | 291k | $53M | -49% | Mar 2026 |
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| Swedbank AB | 290k | $53M | 25% | Mar 2026 |
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| Millennium Management | 282k | $52M | -78% | Mar 2026 |
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| Rhumbline Advisers | 275k | $51M | 1% | Mar 2026 |
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| LMR Partners | 270k | $50M | 3034% | Mar 2026 |
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| Kames Capital | 259k | $47M | -1% | Mar 2026 |
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| Vanguard Asset Management | 250k | $46M | 100% | Mar 2026 |
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| Acadian Asset Management | 249k | $46M | 33% | Mar 2026 |
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| Thompson, Siegel, & Walmsley | 248k | $46M | 9% | Mar 2026 |
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| Victory Capital Management | 247k | $43M | 16% | Dec 2025 |
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| Bnp Paribas Investment Partners | 246k | $43M | 25% | Dec 2025 |
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| KBC Group NV | 235k | $43M | 340% | Mar 2026 |
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| Sofinnova Ventures | 230k | $42M | 100% | Mar 2026 |
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| California State Teachers Retirement System | 221k | $41M | -3% | Mar 2026 |
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| Alliancebernstein | 213k | $38M | 16% | Mar 2026 |
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| Hudson Bay Capital Management | 201k | $37M | -9% | Mar 2026 |
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| Logos Global Management | 200k | $37M | 0% | Mar 2026 |
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| Klp Kapitalforvaltning As | 199k | $37M | 4% | Mar 2026 |
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| SG Americas Securities | 196k | $36M | 6% | Mar 2026 |
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| Principal Financial Group | 187k | $34M | 2% | Mar 2026 |
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| Qube Research & Technologies | 181k | $32M | -45% | Dec 2025 |
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| Allianz Asset Management | 178k | $33M | -28% | Mar 2026 |
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| Prudential Financial | 164k | $30M | -54% | Mar 2026 |
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| Standard Life Aberdeen | 151k | $28M | 8% | Mar 2026 |
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| Letko, Brosseau & Associates | 151k | $28M | 16% | Mar 2026 |
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| Franklin Resources | 144k | $27M | 2% | Mar 2026 |
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| PanAgora Asset Management | 142k | $26M | 4335% | Mar 2026 |
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| O'shaughnessy Asset Management | 141k | $26M | 28% | Mar 2026 |
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| Palo Alto Investors | 141k | $26M | -23% | Mar 2026 |
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| Ieq Capital | 140k | $25M | 1% | Dec 2025 |
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| Russell Investments | 136k | $25M | 14% | Mar 2026 |
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| Ameriprise Financial | 133k | $24M | 1% | Mar 2026 |
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| Eurizon Capital SGR S.p.A. | 129k | $24M | 100% | Mar 2026 |
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| TD Asset Management | 127k | $23M | -6% | Mar 2026 |
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| Wells Fargo & Company | 127k | $23M | 7% | Mar 2026 |
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| Florida State Board of Administration | 124k | $23M | -1% | Mar 2026 |
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| Portolan Capital Management | 119k | $22M | 39% | Mar 2026 |
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| Walleye Trading | 117k | $22M | -21% | Mar 2026 |
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| Creative Planning | 117k | $22M | 30% | Mar 2026 |
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| Quantinno Capital Management | 116k | $21M | 18% | Mar 2026 |
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| Canada Pension Plan Investment Board | 115k | $21M | -17% | Mar 2026 |
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| New York State Teachers Retirement System | 111k | $20M | 0% | Mar 2026 |
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| Rhenman & Partners Asset Management AB | 109k | $20M | 18% | Mar 2026 |
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| Woodline Partners | 109k | $20M | 7% | Mar 2026 |
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| DekaBank Deutsche Girozentrale | 109k | $21M | 0% | Mar 2026 |
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| Susquehanna Portfolio Strategies | 106k | $19M | 100% | Dec 2025 |
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| Nomura Holdings | 103k | $19M | -37% | Mar 2026 |
|
| Great-West Life Assurance Company | 103k | $18M | -24% | Dec 2025 |
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| Adams Express Company | 100k | $18M | 126% | Mar 2026 |
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| Integral Health Asset Management | 100k | $18M | 100% | Dec 2025 |
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| New York State Common Retirement Fund | 100k | $18M | 1% | Mar 2026 |
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| Federated Investors | 97k | $18M | -26% | Mar 2026 |
|
| Aviva | 97k | $18M | -22% | Mar 2026 |
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| National Bank Of Canada /fi/ | 97k | $17M | 32% | Dec 2025 |
|
| Manufacturers Life Insurance Company | 95k | $17M | -10% | Mar 2026 |
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| Caption Management | 93k | $16M | -22% | Dec 2025 |
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| Bank Of Montreal | 93k | $17M | 100% | Mar 2026 |
|
| Sphera Funds Management | 93k | $17M | -2% | Mar 2026 |
|
| Sector Gamma ASA | 90k | $17M | 5% | Mar 2026 |
|
| Illinois Municipal Retirement Fund | 89k | $16M | 10% | Mar 2026 |
|
| American Century Companies | 86k | $15M | 22% | Dec 2025 |
|
| Peak6 | 85k | $16M | -57% | Mar 2026 |
|
| APG All Pensions Group NV | 84k | $13M | -12% | Mar 2026 |
|
| Raymond James Financial | 84k | $15M | 57% | Dec 2025 |
|
| Handelsbanken Fonder AB | 83k | $15M | -2% | Mar 2026 |
|
| LPL Financial | 82k | $15M | -9% | Mar 2026 |
|
| Eversept Partners | 78k | $14M | 51% | Dec 2025 |
|
| HPM Partners | 77k | $14M | 12% | Mar 2026 |
|
| State of Wisconsin Investment Board | 76k | $13M | -3% | Dec 2025 |
|
| Silverarc Capital Management | 75k | $13M | -6% | Dec 2025 |
|
| Korea Investment Corporation | 74k | $14M | 37% | Mar 2026 |
|
| Vanguard Investments Australia | 73k | $13M | 100% | Mar 2026 |
|
| Chevy Chase Trust Holdings | 73k | $13M | -3% | Mar 2026 |
|
| Treasurer of the State of North Carolina | 73k | $13M | 11% | Dec 2025 |
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| Mariner Wealth Advisors | 72k | $13M | 37% | Mar 2026 |
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| Sei Investments | 72k | $13M | 20% | Mar 2026 |
|
| Mackenzie Financial | 71k | $13M | 1% | Mar 2026 |
|
| Universal- Beteiligungs- und Servicegesellschaft mbH | 68k | $13M | -45% | Mar 2026 |
|
| Walleye Trading Advisors | 68k | $12M | -30% | Mar 2026 |
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| Cresset Asset Management | 68k | $12M | -56% | Mar 2026 |
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| Banque Pictet & Cie Sa | 66k | $12M | -7% | Mar 2026 |
|
| Mitsubishi UFJ Trust & Banking Corp | 65k | $12M | 0% | Mar 2026 |
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| Envestnet Asset Management | 65k | $12M | 10% | Mar 2026 |
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| Royal London Asset Management | 64k | $12M | 0% | Mar 2026 |
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| Diam | 64k | $12M | -5% | Mar 2026 |
|
| Nomura Asset Management | 63k | $12M | -6% | Mar 2026 |
|
| Ossiam | 62k | $11M | -5% | Dec 2025 |
|
| Glenview Captal Management | 57k | $11M | -80% | Mar 2026 |
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| Edmond De Rothschild Holding | 57k | $10M | -15% | Mar 2026 |
|
| Cinctive Capital Management | 52k | $9.2M | -21% | Dec 2025 |
|
| Schonfeld Strategic Advisors | 49k | $9.0M | -54% | Mar 2026 |
|
| Rafferty Asset Management | 49k | $8.5M | -69% | Dec 2025 |
|
| Arrowstreet Capital, Limited Partnership | 45k | $8.0M | -88% | Dec 2025 |
|
| Privium Fund Management B.V. | 44k | $8.0M | -40% | Mar 2026 |
|
| Banco Bilbao Vizcaya Argentaria | 43k | $7.8M | -71% | Mar 2026 |
|
| Twin Tree Management | 41k | $7.6M | -52% | Mar 2026 |
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| State of Tennessee, Treasury Department | 39k | $7.2M | -45% | Mar 2026 |
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| Squarepoint Ops | 37k | $6.8M | -77% | Mar 2026 |
|
| Parkman Healthcare Partners | 35k | $6.2M | -73% | Dec 2025 |
|
| Thomas Stevens, CFA" | 35k | $6.5M | -83% | Mar 2026 |
|
| Credit Agricole | 23k | $4.2M | -70% | Mar 2026 |
|
| D. E. Shaw & Co | 22k | $4.0M | -70% | Mar 2026 |
|
| Capital Fund Management | 17k | $3.1M | -84% | Mar 2026 |
|
| Two Sigma Investments | 9.4k | $1.7M | -96% | Mar 2026 |
|
Who sold out of Biogen Idec?
| Fund or Company Name | Date Sold | Shares Held | Valued At |
|---|---|---|---|
| Norges Bank Investment Management | Dec 2025 | 2.6M | $464M |
| Jpmorgan Chase & Co | Sep 2025 | 1.3M | $193M |
| Pacer Advisors | Dec 2025 | 1.1M | $202M |
| Hrt Financial | Dec 2025 | 384k | $68M |
| Jain Global | Dec 2025 | 353k | $62M |
| Centiva Capital | Dec 2025 | 274k | $48M |
| Freestone Grove Partners | Dec 2025 | 188k | $33M |
| Y-Intercept | Dec 2025 | 135k | $24M |
| Suvretta Capital Management | Dec 2025 | 132k | $23M |
| Perceptive Advisors | Dec 2025 | 124k | $22M |
| Braidwell | Dec 2025 | 116k | $20M |
| Brevan Howard Capital Management | Dec 2025 | 71k | $13M |
| Contrarius Group Holdings | Dec 2025 | 65k | $11M |