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 |
|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | 113,873 | $24.6M | 0.02% | −1,047,116−90.2% | Reduced |
| Woodline Partners LP | 112,463 | $24.3M | 0.08% | +3,431+3.1% | Added |
| Raymond James Financial Inc | 108,174 | $23.4M | 0.01% | +11,475+11.9% | Added |
| Aviva PLC | 108,052 | $23.3M | 0.03% | +11,188+11.6% | Added |
| New York State Teachers Retirement System | 108,004 | $23.3M | 0.04% | −3,299−3.0% | Reduced |
| National Bank of Canada | 107,416 | $23.2M | 0.02% | +28,536+36.2% | Added |
| Eurizon Capital SGR S.p.A. | 102,594 | $22.2M | 0.06% | −26,610−20.6% | Reduced |
| Adams Diversified Equity Fund, Inc. | 100,300 | $21.7M | 0.66% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 100,145 | $21.6M | 0.03% | +300+0.3% | Added |
| Integral Health Asset Management, LLC | 100,000 | $21.6M | 0.89% | +40,000+66.7% | Added |
| Illinois Municipal Retirement Fund | 99,303 | $21.5M | 0.24% | +10,000+11.2% | Added |
| Susquehanna Portfolio Strategies, LLC | 98,801 | $21.3M | 0.34% | −13,029−11.7% | Reduced |
| Federated Hermes, Inc. | 98,315 | $21.2M | 0.03% | +1,036+1.1% | Added |
| Van Eck Associates Corp | 98,109 | $21.2M | 0.01% | −981,752−90.9% | Reduced |
| APG Asset Management N.V. | 110,984 | $21.0M | 0.05% | +26,937+32.0% | Added |
| Sphera Funds Management Ltd. | 96,626 | $20.9M | 2.99% | +4,100+4.4% | Added |
| LPL Financial LLC | 95,466 | $20.6M | 0.00% | +13,746+16.8% | Added |
| Rhenman & Partners Asset Management AB | 94,850 | $20.5M | 1.93% | −14,250−13.1% | Reduced |
| DekaBank Deutsche Girozentrale | 108,721 | $20.3M | 0.03% | 00.0% | Unchanged |
| STRS Ohio | 93,794 | $20.3M | 0.08% | +90,300+2,584.4% | Added |
| Handelsbanken Fonder AB | 93,236 | $20.1M | 0.06% | +10,510+12.7% | Added |
| Ameriprise Financial Inc | 91,363 | $19.7M | 0.00% | −41,240−31.1% | Reduced |
| Manufacturers Life Insurance Company, The | 90,784 | $19.6M | 0.02% | −4,324−4.5% | Reduced |
| Hudson Bay Capital Management LP | 90,000 | $19.4M | 0.09% | −111,367−55.3% | Reduced |
| Point72 Asset Management, L.P. | 88,149 | $19.0M | 0.03% | −721,468−89.1% | Reduced |
| Mariner, LLC | 87,374 | $18.9M | 0.02% | +15,338+21.3% | Added |
| Antipodes Partners Ltd | 86,827 | $18.8M | 0.34% | +86,827 | New |
| Mackenzie Financial Corp | 86,394 | $18.7M | 0.02% | +14,962+20.9% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 84,348 | $18.2M | 0.04% | +19,254+29.6% | Added |
| Freestone Grove Partners LP | 83,853 | $18.1M | 0.12% | +83,853 | New |
| SEI Investments Co | 82,516 | $17.8M | 0.02% | +11,003+15.4% | Added |
| State of Wisconsin Investment Board | 78,231 | $16.9M | 0.03% | −333−0.4% | Reduced |
| Cerity Partners LLC | 78,146 | $16.9M | 0.02% | +1,502+2.0% | Added |
| Renaissance Technologies LLC | 77,744 | $16.8M | 0.02% | −125,652−61.8% | Reduced |
| Vanguard Investments Australia, Ltd. | 74,714 | $16.1M | 0.04% | +1,446+2.0% | Added |
| D. E. Shaw & Co., Inc. | 74,438 | $16.1M | 0.01% | +74,438 | New |
| Cinctive Capital Management LP | 72,793 | $15.7M | 0.63% | +53,444+276.2% | Added |
| Prudential Financial Inc | 72,342 | $15.6M | 0.02% | −91,545−55.9% | Reduced |
| Susquehanna International Group, LLP | 71,561 | $15.5M | 0.01% | −68,738−49.0% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 71,460 | $15.4M | 0.04% | −1,185−1.6% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 71,349 | $15.4M | 0.02% | +3,106+4.6% | Added |
| Farallon Capital Management, L.L.C. | 71,000 | $15.3M | 0.09% | +71,000 | New |
| Envestnet Asset Management Inc | 68,369 | $14.8M | 0.00% | +3,676+5.7% | Added |
| Erste Asset Management GmbH | 66,677 | $14.4M | 0.11% | +13,535+25.5% | Added |
| Danske Bank A/S | 66,365 | $14.3M | 0.03% | +18,948+40.0% | Added |
| Banque Pictet & Cie SA | 65,080 | $14.1M | 0.14% | −981−1.5% | Reduced |
| Royal London Asset Management Ltd | 64,751 | $14.0M | 0.03% | +485+0.8% | Added |
| Asset Management One Co.,Ltd. | 64,120 | $13.9M | 0.04% | +200.0% | Added |
| Toroso Investments, LLC | 63,842 | $13.8M | 0.03% | +5,256+9.0% | Added |
| HealthInvest Partners AB | 62,781 | $13.6M | 3.65% | +62,781 | New |
| Credit Agricole S A | 61,853 | $13.4M | 0.03% | +38,868+169.1% | Added |
| OrbiMed Advisors LLC | 61,600 | $13.3M | 0.25% | 00.0% | Unchanged |
| Cresset Asset Management, LLC | 61,258 | $13.2M | 0.05% | −6,245−9.3% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 58,746 | $12.7M | 0.02% | +18,508+46.0% | Added |
| TD Asset Management Inc | 57,805 | $12.5M | 0.01% | −69,463−54.6% | Reduced |
| Lazard Asset Management LLC | 57,071 | $12.3M | 0.02% | +40,136+237.0% | Added |
| Edmond de Rothschild Holding S.A. | 56,064 | $12.1M | 0.16% | −906−1.6% | Reduced |
| Nomura Asset Management Co Ltd | 54,960 | $11.9M | 0.03% | −8,018−12.7% | Reduced |
| Sector Gamma AS | 54,163 | $11.7M | 2.54% | −35,933−39.9% | Reduced |
| Gateway Investment Advisers LLC | 51,023 | $11.0M | 0.11% | +100+0.2% | Added |
| North Growth Management Ltd. | 50,000 | $10.8M | 1.39% | +15,000+42.9% | Added |
| Andra AP-fonden | 50,100 | $10.8M | 0.12% | −1,900−3.7% | Reduced |
| Ethic Inc. | 50,034 | $10.8M | 0.13% | +2,741+5.8% | Added |
| Martingale Asset Management L P | 49,930 | $10.8M | 0.26% | +13,195+35.9% | Added |
| QRG Capital Management, Inc. | 48,819 | $10.5M | 0.09% | +15,817+47.9% | Added |
| Privium Fund Management B.V. | 48,400 | $10.5M | 1.92% | +4,600+10.5% | Added |
| Tredje AP-fonden | 48,138 | $10.4M | 0.05% | +1,768+3.8% | Added |
| Silverarc Capital Management, LLC | 48,101 | $10.4M | 1.16% | −2,866−5.6% | Reduced |
| SEB Asset Management AB | 47,975 | $10.4M | 0.04% | +6,106+14.6% | Added |
| State of New Jersey Common Pension Fund D | 47,453 | $10.3M | 0.03% | −2,684−5.4% | Reduced |
| Nomura Asset Management International Inc. | 47,407 | $10.2M | 0.02% | +74+0.2% | Added |
| Dakota Wealth Management | 47,326 | $10.2M | 0.20% | +1,739+3.8% | Added |
| HighTower Advisors, LLC | 47,099 | $10.2M | 0.01% | −2,752−5.5% | Reduced |
| Picton Mahoney Asset Management | 46,536 | $10.1M | 0.09% | +46,536 | New |
| Lansforsakringar Fondforvaltning AB (publ) | 46,265 | $10.0M | 0.04% | −1,542−3.2% | Reduced |
| Public Employees Retirement System of Ohio | 45,608 | $9.85M | 0.03% | −454−1.0% | Reduced |
| Toronto Dominion Bank | 44,752 | $9.67M | 0.02% | +1,381+3.2% | Added |
| Contravisory Investment Management, Inc. | 44,329 | $9.58M | 1.69% | −348−0.8% | Reduced |
| Resona Asset Management Co.,Ltd. | 43,699 | $9.45M | 0.04% | −2,562−5.5% | Reduced |
| State of Michigan Retirement System | 43,603 | $9.42M | 0.04% | +600+1.4% | Added |
| Generali Investments CEE, investicni spolecnost, a.s. | 43,552 | $9.41M | 0.45% | 00.0% | Unchanged |
| USS Investment Management Ltd | 43,517 | $9.40M | 0.04% | +6,300+16.9% | Added |
| CI Private Wealth, LLC | 42,397 | $9.16M | 0.01% | +5,445+14.7% | Added |
| Mn Services Vermogensbeheer B.V. | 42,300 | $9.14M | 0.07% | +19,000+81.5% | Added |
| Arizona State Retirement System | 42,077 | $9.09M | 0.05% | +2,214+5.6% | Added |
| Natixis Advisors, L.P. | 42,052 | $9.09M | 0.01% | +780+1.9% | Added |
| Czech National Bank | 42,023 | $9.08M | 0.05% | +2,054+5.1% | Added |
| The PNC Financial Services Group, Inc. | 41,119 | $8.88M | 0.00% | +1,635+4.1% | Added |
| Stifel Financial Corp | 40,536 | $8.76M | 0.01% | −402−1.0% | Reduced |
| Orion Investment Co | 39,571 | $8.55M | 2.50% | −39−0.1% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 39,403 | $8.51M | 0.04% | +100+0.3% | Added |
| ASR Vermogensbeheer N.V. | 39,360 | $8.50M | 0.09% | +38,760+6,460.0% | Added |
| State of Tennessee, Treasury Department | 39,265 | $8.48M | 0.03% | 00.0% | Unchanged |
| Ossiam | 39,223 | $8.47M | 0.11% | −1,737−4.2% | Reduced |
| Polymer Capital Management (HK) LTD | 38,665 | $8.35M | 0.85% | +38,665 | New |
| Schroder Investment Management Group | 38,648 | $8.35M | 0.01% | −20,180−34.3% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 67,338 | $8.27M | 0.01% | +4,808+7.7% | Added |
| CWA Asset Management Group, LLC | 38,127 | $8.24M | 0.25% | +3,297+9.5% | Added |
| Banco Bilbao Vizcaya Argentaria, S.A. | 37,631 | $8.13M | 0.05% | −4,840−11.4% | Reduced |
| Ensign Peak Advisors, Inc | 37,354 | $8.07M | 0.01% | +3,644+10.8% | Added |