Biogen Inc.
BIIB- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0000875045
In the last 90 days, Biogen Inc. insiders filed 0 open-market purchases and 1 sale; 1,046 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Biogen Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 1,046
- +42 vs. Q1 2026
- Shares held
- 142.3M
- +7.45M (+5.5%) vs. Q1 2026
- Total value
- $30.7B
- +$6.00B (+24.3%) vs. Q1 2026
- New holders
- 126
- 427 more added
- Sold out
- 84
- 296 more reduced
11 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting BIIB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,046 | $30.7B |
| Q1 2026 | 1,015 | $24.7B |
| Q4 2025 | 1,002 | $24.6B |
| Q3 2025 | 909 | $18.4B |
| Q2 2025 | 867 | $16.3B |
| Q1 2025 | 882 | $17.7B |
| Q4 2024 | 879 | $20.2B |
| Q3 2024 | 921 | $25.1B |
| Q2 2024 | 947 | $29.9B |
| Q1 2024 | 955 | $28.0B |
| Q4 2023 | 1,005 | $33.3B |
| Q3 2023 | 966 | $32.2B |
| Q2 2023 | 1,009 | $36.1B |
| Q1 2023 | 1,004 | $35.0B |
| Q4 2022 | 1,033 | $34.6B |
| Q3 2022 | 987 | $33.0B |
| Q2 2022 | 930 | $25.0B |
| Q1 2022 | 954 | $25.9B |
| Q4 2021 | 1,014 | $29.7B |
| Q3 2021 | 1,044 | $35.1B |
| Q2 2021 | 1,107 | $43.6B |
| Q1 2021 | 1,096 | $35.7B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Banque Pictet & Cie SA | 65,080 | $14.1M | 0.14% | −981−1.5% | Reduced |
| Danske Bank A/S | 66,365 | $14.3M | 0.03% | +18,948+40.0% | Added |
| Erste Asset Management GmbH | 66,677 | $14.4M | 0.11% | +13,535+25.5% | Added |
| Envestnet Asset Management Inc | 68,369 | $14.8M | 0.00% | +3,676+5.7% | Added |
| Farallon Capital Management, L.L.C. | 71,000 | $15.3M | 0.09% | +71,000 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 71,349 | $15.4M | 0.02% | +3,106+4.6% | Added |
| Chevy Chase Trust Holdings, Inc. | 71,460 | $15.4M | 0.04% | −1,185−1.6% | Reduced |
| Susquehanna International Group, LLP | 71,561 | $15.5M | 0.01% | −68,738−49.0% | Reduced |
| Prudential Financial Inc | 72,342 | $15.6M | 0.02% | −91,545−55.9% | Reduced |
| Cinctive Capital Management LP | 72,793 | $15.7M | 0.63% | +53,444+276.2% | Added |
| D. E. Shaw & Co., Inc. | 74,438 | $16.1M | 0.01% | +74,438 | New |
| Vanguard Investments Australia, Ltd. | 74,714 | $16.1M | 0.04% | +1,446+2.0% | Added |
| Renaissance Technologies LLC | 77,744 | $16.8M | 0.02% | −125,652−61.8% | Reduced |
| Cerity Partners LLC | 78,146 | $16.9M | 0.02% | +1,502+2.0% | Added |
| State of Wisconsin Investment Board | 78,231 | $16.9M | 0.03% | −333−0.4% | Reduced |
| SEI Investments Co | 82,516 | $17.8M | 0.02% | +11,003+15.4% | Added |
| Freestone Grove Partners LP | 83,853 | $18.1M | 0.12% | +83,853 | New |
| Mitsubishi UFJ Trust & Banking Corp | 84,348 | $18.2M | 0.04% | +19,254+29.6% | Added |
| Mackenzie Financial Corp | 86,394 | $18.7M | 0.02% | +14,962+20.9% | Added |
| Antipodes Partners Ltd | 86,827 | $18.8M | 0.34% | +86,827 | New |
| Mariner, LLC | 87,374 | $18.9M | 0.02% | +15,338+21.3% | Added |
| Point72 Asset Management, L.P. | 88,149 | $19.0M | 0.03% | −721,468−89.1% | Reduced |
| Hudson Bay Capital Management LP | 90,000 | $19.4M | 0.09% | −111,367−55.3% | Reduced |
| Manufacturers Life Insurance Company, The | 90,784 | $19.6M | 0.02% | −4,324−4.5% | Reduced |
| Ameriprise Financial Inc | 91,363 | $19.7M | 0.00% | −41,240−31.1% | Reduced |
| Handelsbanken Fonder AB | 93,236 | $20.1M | 0.06% | +10,510+12.7% | Added |
| STRS Ohio | 93,794 | $20.3M | 0.08% | +90,300+2,584.4% | Added |
| DekaBank Deutsche Girozentrale | 108,721 | $20.3M | 0.03% | 00.0% | Unchanged |
| Rhenman & Partners Asset Management AB | 94,850 | $20.5M | 1.93% | −14,250−13.1% | Reduced |
| LPL Financial LLC | 95,466 | $20.6M | 0.00% | +13,746+16.8% | Added |
| Sphera Funds Management Ltd. | 96,626 | $20.9M | 2.99% | +4,100+4.4% | Added |
| APG Asset Management N.V. | 110,984 | $21.0M | 0.05% | +26,937+32.0% | Added |
| Van Eck Associates Corp | 98,109 | $21.2M | 0.01% | −981,752−90.9% | Reduced |
| Federated Hermes, Inc. | 98,315 | $21.2M | 0.03% | +1,036+1.1% | Added |
| Susquehanna Portfolio Strategies, LLC | 98,801 | $21.3M | 0.34% | −13,029−11.7% | Reduced |
| Illinois Municipal Retirement Fund | 99,303 | $21.5M | 0.24% | +10,000+11.2% | Added |
| Integral Health Asset Management, LLC | 100,000 | $21.6M | 0.89% | +40,000+66.7% | Added |
| New York State Common Retirement Fund | 100,145 | $21.6M | 0.03% | +300+0.3% | Added |
| Adams Diversified Equity Fund, Inc. | 100,300 | $21.7M | 0.66% | 00.0% | Unchanged |
| Eurizon Capital SGR S.p.A. | 102,594 | $22.2M | 0.06% | −26,610−20.6% | Reduced |
| National Bank of Canada | 107,416 | $23.2M | 0.02% | +28,536+36.2% | Added |
| New York State Teachers Retirement System | 108,004 | $23.3M | 0.04% | −3,299−3.0% | Reduced |
| Aviva PLC | 108,052 | $23.3M | 0.03% | +11,188+11.6% | Added |
| Raymond James Financial Inc | 108,174 | $23.4M | 0.01% | +11,475+11.9% | Added |
| Woodline Partners LP | 112,463 | $24.3M | 0.08% | +3,431+3.1% | Added |
| T. Rowe Price Investment Management, Inc. | 113,873 | $24.6M | 0.02% | −1,047,116−90.2% | Reduced |
| American Century Companies Inc | 114,152 | $24.7M | 0.01% | +9,369+8.9% | Added |
| State Board of Administration of Florida Retirement System | 121,311 | $26.2M | 0.04% | −2,901−2.3% | Reduced |
| Great West Life Assurance Co | 122,258 | $26.4M | 0.04% | +535+0.4% | Added |
| Bank of Montreal | 124,267 | $26.8M | 0.01% | +31,558+34.0% | Added |
| Standard Life Aberdeen plc | 128,227 | $27.7M | 0.04% | −22,917−15.2% | Reduced |
| Wells Fargo & Company | 128,664 | $27.8M | 0.00% | +1,530+1.2% | Added |
| Adage Capital Partners GP, L.L.C. | 129,599 | $28.0M | 0.04% | −203,858−61.1% | Reduced |
| Acadian Asset Management LLC | 129,878 | $28.1M | 0.03% | −118,611−47.7% | Reduced |
| Lord, Abbett & Co. LLC | 130,184 | $28.1M | 0.08% | +130,184 | New |
| Thompson Siegel & Walmsley LLC | 130,512 | $28.2M | 0.51% | −117,831−47.4% | Reduced |
| Ieq Capital, LLC | 132,142 | $28.6M | 0.13% | −19,934−13.1% | Reduced |
| Russell Investments Group, Ltd. | 133,894 | $29.0M | 0.03% | −1,947−1.4% | Reduced |
| Nippon Life Global Investors Americas, Inc. | 137,220 | $29.6M | 1.18% | +103,650+308.8% | Added |
| Franklin Resources Inc | 137,436 | $29.7M | 0.01% | −7,012−4.9% | Reduced |
| O'Shaughnessy Asset Management, LLC | 138,260 | $29.9M | 0.14% | −3,064−2.2% | Reduced |
| Creative Planning | 138,613 | $29.9M | 0.02% | +21,377+18.2% | Added |
| Walleye Trading LLC | 139,253 | $30.1M | 0.42% | +39,721+39.9% | Added |
| Palo Alto Investors LP | 140,279 | $30.3M | 4.19% | −440−0.3% | Reduced |
| Portolan Capital Management, LLC | 142,856 | $30.9M | 1.16% | +24,375+20.6% | Added |
| Letko, Brosseau & Associates Inc | 146,562 | $31.7M | 0.47% | −4,303−2.9% | Reduced |
| Treasurer of the State of North Carolina | 148,629 | $32.1M | 0.08% | +73,450+97.7% | Added |
| Quantinno Capital Management LP | 151,977 | $32.8M | 0.04% | +35,603+30.6% | Added |
| Jupiter Asset Management Ltd | 160,057 | $34.6M | 0.17% | +152,916+2,141.4% | Added |
| Allianz Asset Management GmbH | 180,079 | $38.9M | 0.04% | +2,030+1.1% | Added |
| Alliancebernstein L.P. | 214,975 | $39.4M | 0.01% | +2,078+1.0% | Added |
| Principal Financial Group Inc | 184,450 | $39.9M | 0.02% | −2,609−1.4% | Reduced |
| Nissay Asset Management Corp | 185,301 | $40.0M | 0.17% | +155,539+522.6% | Added |
| Panagora Asset Management Inc | 186,929 | $40.4M | 0.12% | +44,864+31.6% | Added |
| Man Group plc | 196,222 | $42.4M | 0.08% | −122,523−38.4% | Reduced |
| KLP Kapitalforvaltning AS | 199,177 | $43.0M | 0.14% | 00.0% | Unchanged |
| California State Teachers Retirement System | 220,009 | $47.5M | 0.04% | −678−0.3% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 234,138 | $50.6M | 0.05% | +18,702+8.7% | Added |
| Kames Capital plc | 241,101 | $52.1M | 0.56% | −17,634−6.8% | Reduced |
| Voya Investment Management LLC | 246,782 | $53.3M | 0.05% | +192,221+352.3% | Added |
| Barclays PLC | 247,157 | $53.4M | 0.02% | −304,317−55.2% | Reduced |
| Rhumbline Advisers | 262,979 | $56.8M | 0.04% | −12,459−4.5% | Reduced |
| Balyasny Asset Management LLC | 265,090 | $57.3M | 0.10% | −384,956−59.2% | Reduced |
| Perceptive Advisors LLC | 276,173 | $59.7M | 0.93% | +276,173 | New |
| Causeway Capital Management LLC | 278,283 | $60.1M | 0.65% | −2,500−0.9% | Reduced |
| KBC Group NV | 278,652 | $60.2M | 0.13% | +43,960+18.7% | Added |
| Gotham Asset Management, LLC | 279,900 | $60.5M | 0.14% | −18,537−6.2% | Reduced |
| Patient Capital Management, LLC | 283,697 | $61.3M | 2.04% | −96,044−25.3% | Reduced |
| Vanguard Asset Management, Ltd | 284,376 | $61.4M | 0.04% | +34,598+13.9% | Added |
| Nuveen, LLC | 317,204 | $68.5M | 0.02% | −41,634−11.6% | Reduced |
| Swedbank AB | 320,622 | $69.3M | 0.06% | +30,782+10.6% | Added |
| California Public Employees Retirement System | 329,106 | $71.1M | 0.04% | −11,797−3.5% | Reduced |
| Vanguard Global Advisers, LLC | 335,936 | $72.6M | 0.03% | −7,832−2.3% | Reduced |
| Fisher Asset Management, LLC | 338,018 | $73.0M | 0.02% | +25,400+8.1% | Added |
| FIL Ltd | 342,623 | $74.0M | 0.05% | +24,567+7.7% | Added |
| Victory Capital Management Inc | 343,419 | $74.2M | 0.04% | +22,634+7.1% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 346,617 | $74.9M | 0.04% | −9,674−2.7% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 358,823 | $77.5M | 0.04% | +24,410+7.3% | Added |
| Candriam Luxembourg S.C.A. | 384,326 | $83.0M | 0.37% | +2,558+0.7% | Added |
| BNP Paribas Arbitrage, SA | 387,542 | $83.7M | 0.04% | −83,526−17.7% | Reduced |