BiogenBIIB
13F holders, Q3 2025 (September 30)908holders +42
118new positions
70sold out
9famous investors
$140.65avg. 13F price*
At the end of Q3 2025, 908 institutions reported holding Biogen Inc. (BIIB) in their 13F filings, up 42 from Q2 2025. 118 opened new positions and 70 sold out. The largest holders were Vanguard Group Inc. ($2.4B), Primecap Management Co. ($2.1B) and BlackRock, Inc. ($2.1B). 9 famous investors held it, including Steve Cohen (1.3% of Point72 Asset Management's portfolio), Jim Simons / Peter Brown (0.2% of Renaissance Technologies's portfolio) and Joel Greenblatt (0.2% of Gotham Asset 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 118 | $187.7M |
| Exits | 70 | $79.8M |
All 13F filers, Q2 2025 → Q3 2025: 11,627,961 shares bought and 8,480,146 shares sold, net +3,147,815 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 908 holders
| Vanguard Group Inc. | 0.04% | Reduce -0.0% | 17,289,235 | $2.4B |
| Primecap Management Co. | 1.60% | Reduce -5.4% | 14,954,697 | $2.1B |
| BlackRock, Inc. | 0.04% | Add +8.9% | 14,763,952 | $2.1B |
| State Street Corp. | 0.04% | Reduce -2.0% | 7,319,749 | $1.0B |
| Wellington Management Group LLP | 0.10% | Reduce -11.5% | 4,246,504 | $594.9M |
| Geode Capital Management, LLC | 0.04% | Add +3.8% | 4,068,781 | $567.7M |
| Point72 Asset Management | 1.26% | Add +1.1% | 3,872,901 | $542.5M |
| Invesco Ltd. | 0.05% | Add +4.2% | 2,418,127 | $338.7M |
| Morgan Stanley | 0.02% | Add +15.1% | 2,251,535 | $315.4M |
| AQR Capital Management | 0.16% | Add +30.7% | 1,783,581 | $248.8M |
| Legal & General Group Plc | 0.05% | Add +10.1% | 1,593,399 | $223.2M |
| Northern Trust Corp. | 0.03% | Reduce -2.5% | 1,499,332 | $210.0M |
| Pacer Advisors, Inc. | 0.53% | Add +9.9% | 1,451,249 | $203.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.04% | Reduce -17.4% | 1,439,208 | $201.6M |
| Barclays PLC | 0.07% | Add +70.4% | 1,359,424 | $190.4M |
| FMR LLC | 0.01% | Reduce -23.1% | 1,287,760 | $180.4M |
| JPMorgan Chase & Co. | 0.01% | Add +26.5% | 1,268,350 | $177.7M |
| Balyasny Asset Management L.P. | 0.36% | Add +48.4% | 1,234,149 | $172.9M |
| Deutsche Bank AG | 0.06% | Add +9.6% | 1,231,302 | $172.5M |
| Bank of America Corp. | 0.01% | Add +14.7% | 1,220,018 | $170.9M |
| Charles Schwab Investment Management Inc. | 0.03% | Add +4.4% | 1,123,349 | $157.4M |
| Millennium Management | 0.13% | Add +64.5% | 1,111,190 | $155.7M |
| T. Rowe Price Investment Management, Inc. | 0.09% | Reduce -23.4% | 1,067,482 | $149.5M |
| Van Eck Associates Corp. | 0.14% | Reduce -0.7% | 1,066,931 | $149.5M |
| Goldman Sachs Group Inc. | 0.02% | Add +58.5% | 1,063,586 | $149.0M |
| T. Rowe Price Associates Inc. | 0.01% | Add +15.8% | 965,457 | $135.2M |
| Renaissance Technologies | 0.18% | Reduce -7.7% | 964,406 | $135.1M |
| Man Group plc | 0.25% | Add +15.7% | 918,025 | $128.6M |
| Marshall Wace, LLP | 0.14% | Add +434.9% | 887,661 | $124.3M |
| Bank of New York Mellon Corp | 0.02% | Reduce -2.1% | 884,701 | $123.9M |
| Dimensional Fund Advisors LP | 0.03% | Reduce -6.0% | 873,094 | $122.3M |
| Alyeska Investment Group, L.P. | 0.36% | Add +66.1% | 845,277 | $118.4M |
| First Trust Advisors LP | 0.09% | Reduce -3.8% | 840,557 | $117.7M |
| Pictet Asset Management Holding SA | 0.10% | Add +236.1% | 770,855 | $107.7M |
| AustralianSuper Pty Ltd | 0.50% | Add +1.6% | 751,386 | $105.3M |
| Massachusetts Financial Services Co. | 0.03% | Add +1.6% | 729,316 | $102.2M |
| Rakuten Investment Management, Inc. | 0.35% | — | 198,572 | $99.1M |
| Employees Provident Fund Board | 0.79% | No change | 704,196 | $98.6M |
| Amundi | 0.03% | Add +6.6% | 618,309 | $95.3M |
| Robeco Institutional Asset Management B.V. | 0.14% | Add +49.5% | 671,054 | $94.0M |
| UBS Group AG | 0.02% | Add +43.4% | 638,965 | $89.5M |
| Caisse de depot et placement du Quebec | 0.14% | Add +718.2% | 569,253 | $79.7M |
| Causeway Capital Management LLC | 1.05% | Add +15.0% | 567,518 | $79.5M |
| Royal Bank of Canada | 0.01% | Add +0.4% | 498,120 | $69.8M |
| D. E. Shaw & Co. | 0.06% | Reduce -65.0% | 477,924 | $66.9M |
| HSBC Holdings PLC | 0.04% | Add +1.0% | 447,518 | $62.6M |
| Susquehanna International Group, LLP | 0.09% | Reduce -25.8% | 441,082 | $61.8M |
| Prudential Financial Inc. | 0.07% | Add +13.2% | 439,109 | $61.5M |
| Swiss National Bank | 0.03% | Reduce -4.7% | 422,400 | $59.2M |
| Sumitomo Mitsui Trust Group, Inc. | 0.03% | Add +0.2% | 415,609 | $58.2M |
| Allianz Asset Management GmbH | 0.07% | Reduce -24.7% | 396,803 | $55.6M |
| Patient Capital Management, LLC | 2.22% | Add +23.8% | 396,649 | $55.6M |
| BNP Paribas Financial Markets | 0.04% | Add +0.2% | 395,938 | $55.5M |
| Arrowstreet Capital, Limited Partnership | 0.03% | Reduce -39.0% | 380,791 | $53.3M |
| Citadel Advisors | 0.04% | Reduce -38.8% | 372,728 | $52.2M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.11% | Add +425.3% | 348,404 | $48.8M |
| California Public Employees Retirement System | 0.03% | Add +1.4% | 343,786 | $48.2M |
| Nuveen, LLC | 0.01% | Reduce -2.7% | 332,457 | $46.6M |
| Adage Capital Partners Gp, L.L.C. | 0.07% | Add +34.0% | 332,132 | $46.5M |
| Schonfeld Strategic Advisors LLC | 0.31% | Add +400.3% | 320,154 | $44.8M |
| FIL Ltd | 0.03% | Add +26.1% | 307,997 | $43.1M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.03% | Add +4.5% | 307,379 | $43.1M |
| LSV Asset Management | 0.09% | Add +21.8% | 306,839 | $43.0M |
| Thompson Siegel & Walmsley LLC | 0.70% | Reduce -5.1% | 306,442 | $42.9M |
| Rhumbline Advisers | 0.03% | Reduce -3.6% | 289,206 | $40.5M |
| National Pension Service | 0.03% | Add +4.5% | 285,202 | $40.0M |
| Fisher Asset Management | 0.01% | Reduce -4.1% | 277,285 | $38.8M |
| Vestal Point Capital, LP | 1.75% | New | 275,000 | $38.5M |
| Gotham Asset Management | 0.17% | Add +65.5% | 270,498 | $37.9M |
| Hudson Bay Capital Management LP | 0.25% | Reduce -5.5% | 253,151 | $35.5M |
| Canada Pension Plan Investment Board | 0.02% | Reduce -6.2% | 239,380 | $33.5M |
| Alliancebernstein L.P. | 0.01% | Add +2.7% | 237,275 | $33.2M |
| California State Teachers Retirement System | 0.03% | Reduce -1.6% | 234,818 | $32.9M |
| Swedbank AB | 0.03% | Add +8.8% | 232,439 | $32.6M |
| Franklin Resources Inc. | 0.01% | Add +0.1% | 229,156 | $32.1M |
| Freestone Grove Partners LP | 0.23% | Add +97.2% | 218,866 | $30.7M |
| Victory Capital Management Inc. | 0.02% | Add +72.5% | 212,962 | $29.8M |
| Two Sigma Investments, LP | 0.05% | Reduce -59.6% | 205,233 | $28.7M |
| Citigroup Inc. | 0.02% | Reduce -9.4% | 202,299 | $28.3M |
| ProShare Advisors LLC | 0.06% | Reduce -17.4% | 197,164 | $27.6M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.07% | Add +20.3% | 196,903 | $27.6M |
| AEGON ASSET MANAGEMENT UK Plc | 0.32% | New | 195,635 | $27.4M |
| Acadian Asset Management LLC | 0.05% | Reduce -2.1% | 195,251 | $27.3M |
| Wedge Capital Management L L P | 0.46% | New | 192,872 | $27.0M |
| Los Angeles Capital Management LLC | 0.09% | Add +331.4% | 191,364 | $26.8M |
| Palo Alto Investors LP | 4.81% | Reduce -9.8% | 185,661 | $26.0M |
| Wells Fargo & Company | 0.01% | Add +6.2% | 176,264 | $24.7M |
| Montanova Capital, LLC | 0.71% | Add +10.7% | 168,190 | $23.6M |
| KLP Kapitalforvaltning As | 0.09% | No change | 166,577 | $23.3M |
| TD Asset Management Inc | 0.02% | Add +12.7% | 161,195 | $22.6M |
| Candriam S.C.A. | 0.12% | Reduce -2.8% | 158,821 | $22.2M |
| Rafferty Asset Management, LLC | 0.07% | Reduce -12.1% | 158,627 | $22.2M |
| Principal Financial Group Inc. | 0.01% | Reduce -1.2% | 157,842 | $22.1M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.04% | Reduce -1.0% | 147,644 | $20.7M |
| Ameriprise Financial Inc. | 0.00% | Add +15.3% | 145,409 | $20.4M |
| New York State Common Retirement Fund | 0.03% | Add +2.3% | 143,465 | $20.1M |
| Russell Investments Group, Ltd. | 0.02% | Reduce -41.6% | 141,348 | $19.8M |
| Aberdeen Group plc | 0.03% | Reduce -11.4% | 138,865 | $19.5M |
| Banco Bilbao Vizcaya Argentaria, S.A. | 0.15% | Add +20.7% | 138,654 | $19.4M |
| Ieq Capital, LLC | 0.06% | Add +23.2% | 138,281 | $19.4M |
"% of holder's portfolio" is BIIB's weight in each manager's 13F, not the share of Biogen Inc. the manager owns.