BiogenBIIB
13F holders, Q4 2025 (December 31)1,001holders +93
136new positions
79sold out
8famous investors
$175.97avg. 13F price*
At the end of Q4 2025, 1,001 institutions reported holding Biogen Inc. (BIIB) in their 13F filings, up 93 from Q3 2025. 136 opened new positions and 79 sold out. The largest holders were Vanguard Group Inc. ($3.1B), BlackRock, Inc. ($2.6B) and Primecap Management Co. ($2.6B). 8 famous investors held it, including Steve Cohen (0.8% of Point72 Asset Management's portfolio), Joel Greenblatt (0.2% of Gotham Asset Management's portfolio) and Israel Englander (0.1% of Millennium Management's portfolio).
- Company
- Biogen Inc.
- Sector
- Health Care
- CUSIP
- 09062X103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 136 | $705.0M |
| Exits | 79 | $154.1M |
All 13F filers, Q3 2025 → Q4 2025: 18,119,562 shares bought and 12,547,782 shares sold, net +5,571,780 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,001 holders
| Vanguard Group Inc. | 0.04% | Add +0.9% | 17,447,092 | $3.1B |
| BlackRock, Inc. | 0.04% | Add +0.3% | 14,811,370 | $2.6B |
| Primecap Management Co. | 1.97% | Reduce -1.3% | 14,757,997 | $2.6B |
| FMR LLC | 0.08% | Add +632.0% | 9,425,863 | $1.7B |
| State Street Corp. | 0.04% | Reduce -2.2% | 7,159,020 | $1.3B |
| Geode Capital Management, LLC | 0.05% | Add +3.2% | 4,199,399 | $736.4M |
| Wellington Management Group LLP | 0.11% | Reduce -16.4% | 3,551,269 | $625.0M |
| Point72 Asset Management | 0.81% | Reduce -27.4% | 2,813,192 | $495.1M |
| Norges Bank | 0.05% | — | 2,638,834 | $464.4M |
| Morgan Stanley | 0.02% | Add +3.3% | 2,325,013 | $409.2M |
| JPMorgan Chase & Co. | 0.02% | Add +46.4% | 1,857,262 | $326.9M |
| Boston Partners | 0.31% | New | 1,720,595 | $302.8M |
| Invesco Ltd. | 0.03% | Reduce -31.5% | 1,655,441 | $291.3M |
| AQR Capital Management | 0.14% | Reduce -14.3% | 1,528,616 | $269.0M |
| Legal & General Group Plc | 0.06% | Reduce -8.4% | 1,459,597 | $256.9M |
| Northern Trust Corp. | 0.03% | Reduce -3.5% | 1,446,126 | $254.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.05% | Reduce -3.3% | 1,391,370 | $244.9M |
| Barclays PLC | 0.09% | Reduce -4.0% | 1,305,007 | $229.7M |
| T. Rowe Price Investment Management, Inc. | 0.13% | Add +9.7% | 1,170,907 | $206.1M |
| Pacer Advisors, Inc. | 0.54% | Reduce -21.0% | 1,145,890 | $201.7M |
| Charles Schwab Investment Management Inc. | 0.03% | Add +1.8% | 1,143,902 | $201.3M |
| Bank of America Corp. | 0.01% | Reduce -7.5% | 1,128,845 | $198.7M |
| Millennium Management | 0.15% | Add +1.3% | 1,125,586 | $198.1M |
| Goldman Sachs Group Inc. | 0.03% | Add +3.4% | 1,099,366 | $193.5M |
| Van Eck Associates Corp. | 0.16% | Reduce -0.1% | 1,065,616 | $187.5M |
| Alyeska Investment Group, L.P. | 0.51% | Add +21.2% | 1,024,268 | $180.3M |
| Dimensional Fund Advisors LP | 0.04% | Add +10.0% | 960,645 | $169.1M |
| Deutsche Bank AG | 0.05% | Reduce -22.5% | 953,728 | $167.8M |
| Pictet Asset Management Holding SA | 0.16% | Add +22.9% | 947,494 | $166.9M |
| Bank of New York Mellon Corp | 0.03% | Reduce -8.3% | 811,106 | $142.7M |
| Fred Alger Management, LLC | 0.55% | Add +39074.8% | 798,774 | $140.6M |
| T. Rowe Price Associates Inc. | 0.02% | Reduce -18.0% | 792,071 | $139.4M |
| Massachusetts Financial Services Co. | 0.04% | Reduce -2.3% | 712,559 | $125.4M |
| Employees Provident Fund Board | 0.91% | No change | 704,196 | $123.9M |
| Susquehanna International Group, LLP | 0.16% | Add +50.0% | 661,684 | $116.4M |
| UBS Group AG | 0.02% | Add +0.4% | 641,788 | $112.9M |
| Robeco Institutional Asset Management B.V. | 0.15% | Reduce -9.0% | 610,908 | $107.5M |
| Balyasny Asset Management L.P. | 0.21% | Reduce -50.7% | 607,953 | $107.0M |
| Caisse de depot et placement du Quebec | 0.18% | Add +3.4% | 588,545 | $103.6M |
| Patient Capital Management, LLC | 3.92% | Add +45.3% | 576,352 | $101.4M |
| Citigroup Inc. | 0.07% | Add +183.7% | 573,844 | $101.0M |
| Amundi | 0.03% | Reduce -7.4% | 572,429 | $100.7M |
| First Trust Advisors LP | 0.07% | Reduce -32.7% | 565,847 | $99.6M |
| Royal Bank of Canada | 0.02% | Add +8.8% | 541,825 | $95.4M |
| Causeway Capital Management LLC | 1.26% | Reduce -8.2% | 521,101 | $91.7M |
| BNP Paribas Financial Markets | 0.06% | Add +28.3% | 508,067 | $89.4M |
| HSBC Holdings PLC | 0.05% | Add +12.6% | 503,832 | $88.8M |
| AustralianSuper Pty Ltd | 0.39% | Reduce -36.5% | 476,812 | $83.9M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.17% | Add +29.9% | 452,442 | $79.6M |
| Swiss National Bank | 0.04% | Reduce -4.9% | 401,800 | $70.7M |
| Renaissance Technologies | 0.11% | Reduce -58.6% | 399,196 | $70.3M |
| Marshall Wace, LLP | 0.07% | Reduce -56.5% | 385,928 | $67.9M |
| HRT Financial LP | 0.21% | Add +8542.9% | 384,265 | $67.6M |
| Nuveen, LLC | 0.02% | Add +13.0% | 375,557 | $66.1M |
| Sumitomo Mitsui Trust Group, Inc. | 0.04% | Reduce -10.8% | 370,627 | $65.2M |
| Prudential Financial Inc. | 0.08% | Reduce -19.5% | 353,493 | $62.2M |
| Jain Global LLC | 0.64% | New | 353,173 | $62.2M |
| Man Group plc | 0.12% | Reduce -63.0% | 339,284 | $59.7M |
| California Public Employees Retirement System | 0.03% | Reduce -3.8% | 330,806 | $58.2M |
| Candriam S.C.A. | 0.29% | Add +108.1% | 330,472 | $58.2M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.04% | Add +4.1% | 319,909 | $56.9M |
| FIL Ltd | 0.04% | Add +3.8% | 319,544 | $56.2M |
| LSV Asset Management | 0.12% | Add +3.3% | 316,815 | $55.8M |
| Adage Capital Partners Gp, L.L.C. | 0.08% | Reduce -11.4% | 294,357 | $51.8M |
| Fisher Asset Management | 0.02% | Add +5.8% | 293,269 | $51.6M |
| Glenview Capital Management, LLC | 1.09% | New | 290,605 | $51.1M |
| National Pension Service | 0.04% | Add +0.7% | 287,238 | $50.6M |
| Gotham Asset Management | 0.18% | Add +2.3% | 276,809 | $48.7M |
| Rhumbline Advisers | 0.04% | Reduce -6.0% | 271,746 | $47.8M |
| AEGON ASSET MANAGEMENT UK Plc | 0.54% | Add +33.0% | 260,162 | $45.8M |
| Two Sigma Investments, LP | 0.07% | Add +22.7% | 251,763 | $44.3M |
| Allianz Asset Management GmbH | 0.05% | Reduce -37.6% | 247,722 | $43.6M |
| Victory Capital Management Inc. | 0.02% | Add +15.8% | 246,650 | $43.4M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.05% | Add +24.8% | 245,680 | $43.2M |
| Swedbank AB | 0.04% | Reduce -0.4% | 231,609 | $40.8M |
| Thompson Siegel & Walmsley LLC | 0.68% | Reduce -25.3% | 228,807 | $40.3M |
| Artemis Investment Management LLP | 0.48% | New | 226,845 | $39.9M |
| California State Teachers Retirement System | 0.04% | Reduce -3.6% | 226,380 | $39.8M |
| Hudson Bay Capital Management LP | 0.24% | Reduce -12.4% | 221,860 | $39.0M |
| Logos Global Management LP | 2.35% | Add +100.0% | 200,000 | $35.2M |
| KLP Kapitalforvaltning As | 0.13% | Add +15.1% | 191,677 | $33.7M |
| Freestone Grove Partners LP | 0.24% | Reduce -14.3% | 187,608 | $33.0M |
| Acadian Asset Management LLC | 0.05% | Reduce -4.0% | 187,457 | $33.0M |
| Principal Financial Group Inc. | 0.02% | Add +16.7% | 184,189 | $32.4M |
| SG Americas Securities, LLC | 0.04% | Add +1793.8% | 183,829 | $32.4M |
| Alliancebernstein L.P. | 0.01% | Reduce -22.6% | 183,744 | $32.3M |
| Palo Alto Investors LP | 4.50% | Reduce -1.1% | 183,571 | $32.3M |
| Los Angeles Capital Management LLC | 0.10% | Add +7.2% | 205,140 | $30.7M |
| Defilade Capital Management, L.P. | 3.86% | — | 161,992 | $28.5M |
| Nomura Holdings Inc. | 0.07% | Add +19.8% | 147,261 | $25.9M |
| Banco Bilbao Vizcaya Argentaria, S.A. | 0.18% | Add +6.0% | 146,951 | $25.9M |
| Squarepoint Ops LLC | 0.05% | Add +1819.3% | 146,408 | $25.8M |
| DekaBank Deutsche Girozentrale | 0.04% | No change | 108,721 | $25.7M |
| Franklin Resources Inc. | 0.01% | Reduce -38.3% | 141,374 | $24.9M |
| Aberdeen Group plc | 0.04% | Add +0.7% | 139,878 | $24.6M |
| Ieq Capital, LLC | 0.07% | Add +1.0% | 139,639 | $24.6M |
| Canada Pension Plan Investment Board | 0.02% | Reduce -42.3% | 138,078 | $24.3M |
| TD Asset Management Inc | 0.02% | Reduce -16.0% | 135,352 | $23.8M |
| Y-Intercept (Hong Kong) Ltd | 0.53% | New | 134,566 | $23.7M |
| Montanova Capital, LLC | 0.58% | Reduce -21.3% | 132,290 | $23.3M |
"% of holder's portfolio" is BIIB's weight in each manager's 13F, not the share of Biogen Inc. the manager owns.