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; 1,047 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Biogen Inc. as of Sep 30, 2025. 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
- 909
- +52 vs. Q2 2025
- Shares held
- 131.3M
- +3.52M (+2.8%) vs. Q2 2025
- Total value
- $18.4B
- +$2.32B (+14.5%) vs. Q2 2025
- New holders
- 125
- 323 more added
- Sold out
- 73
- 268 more reduced
10 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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 | 1,047 | $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, Q3 2025
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Great West Life Assurance Co | 135,657 | $18.8M | 0.03% | +4,724+3.6% | Added |
| State Board of Administration of Florida Retirement System | 131,389 | $18.4M | 0.03% | −3,458−2.6% | Reduced |
| Parkman Healthcare Partners LLC | 130,165 | $18.2M | 2.00% | +130,165 | New |
| Nordea Investment Management AB | 132,583 | $18.2M | 0.02% | +6,648+5.3% | Added |
| Bank of Montreal | 125,255 | $17.5M | 0.01% | +21,941+21.2% | Added |
| Federated Hermes, Inc. | 124,922 | $17.5M | 0.03% | +4,645+3.9% | Added |
| Nomura Holdings Inc | 122,902 | $17.2M | 0.08% | +2,087+1.7% | Added |
| Qube Research & Technologies Ltd | 121,607 | $17.0M | 0.02% | −621,702−83.6% | Reduced |
| Manufacturers Life Insurance Company, The | 120,851 | $16.9M | 0.01% | +13,098+12.2% | Added |
| Letko, Brosseau & Associates Inc | 120,620 | $16.9M | 0.29% | +2,965+2.5% | Added |
| AXA Investment Managers S.A. | 118,311 | $16.6M | 0.04% | +118,311 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 116,928 | $16.4M | 0.05% | −100,810−46.3% | Reduced |
| Aviva PLC | 115,706 | $16.2M | 0.03% | +7,032+6.5% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 113,553 | $15.9M | 0.01% | −33,929−23.0% | Reduced |
| New York State Teachers Retirement System | 110,194 | $15.4M | 0.03% | −455−0.4% | Reduced |
| DekaBank Deutsche Girozentrale | 108,721 | $15.0M | 0.03% | 00.0% | Unchanged |
| Logos Global Management LP | 100,000 | $14.0M | 1.38% | −100,000−50.0% | Reduced |
| Handelsbanken Fonder AB | 99,316 | $13.9M | 0.04% | +1,715+1.8% | Added |
| Point72 Europe (London) LLP | 99,013 | $13.9M | 0.75% | +3,333+3.5% | Added |
| Woodline Partners LP | 96,666 | $13.5M | 0.06% | +1,106+1.2% | Added |
| Cresset Asset Management, LLC | 89,322 | $12.5M | 0.06% | +3,355+3.9% | Added |
| State of Tennessee, Treasury Department | 85,463 | $12.0M | 0.04% | +48,919+133.9% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 84,660 | $11.9M | 0.03% | +3,465+4.3% | Added |
| APG Asset Management N.V. | 98,274 | $11.7M | 0.03% | −210.0% | Reduced |
| Illinois Municipal Retirement Fund | 83,120 | $11.6M | 0.15% | −23,801−22.3% | Reduced |
| Sphera Funds Management Ltd. | 82,738 | $11.6M | 2.75% | 00.0% | Unchanged |
| Cerity Partners LLC | 82,248 | $11.5M | 0.02% | +35,696+76.7% | Added |
| Thrivent Financial for Lutherans | 82,091 | $11.5M | 0.02% | +63,896+351.2% | Added |
| Silverarc Capital Management, LLC | 80,419 | $11.3M | 1.63% | +80,419 | New |
| State of Wisconsin Investment Board | 77,899 | $10.9M | 0.03% | −869−1.1% | Reduced |
| Sector Gamma AS | 75,475 | $10.6M | 2.62% | +24,836+49.0% | Added |
| Chevy Chase Trust Holdings, Inc. | 75,171 | $10.5M | 0.03% | −2,570−3.3% | Reduced |
| National Bank of Canada | 73,117 | $10.2M | 0.01% | −70,095−48.9% | Reduced |
| Banque Pictet & Cie SA | 71,663 | $10.0M | 0.10% | −362−0.5% | Reduced |
| American Century Companies Inc | 70,393 | $9.86M | 0.01% | −10,860−13.4% | Reduced |
| LPL Financial LLC | 70,164 | $9.83M | 0.00% | −300.0% | Reduced |
| Creative Planning | 68,583 | $9.61M | 0.01% | +13,176+23.8% | Added |
| Asset Management One Co.,Ltd. | 67,907 | $9.51M | 0.03% | +5,097+8.1% | Added |
| Quantinno Capital Management LP | 67,852 | $9.50M | 0.03% | +13,686+25.3% | Added |
| Nomura Asset Management Co Ltd | 67,369 | $9.44M | 0.02% | +13,028+24.0% | Added |
| Mirae Asset Global Investments Co., Ltd. | 67,010 | $9.39M | 0.03% | +5,987+9.8% | Added |
| Edmond de Rothschild Holding S.A. | 66,970 | $9.38M | 0.14% | +7,290+12.2% | Added |
| Royal London Asset Management Ltd | 65,971 | $9.24M | 0.02% | −1,775−2.6% | Reduced |
| Cinctive Capital Management LP | 65,837 | $9.22M | 0.46% | +51,035+344.8% | Added |
| Treasurer of the State of North Carolina | 65,682 | $9.20M | 0.03% | −2,560−3.8% | Reduced |
| Ossiam | 65,603 | $9.19M | 0.12% | +15,116+29.9% | Added |
| Mackenzie Financial Corp | 63,754 | $8.93M | 0.01% | −18,582−22.6% | Reduced |
| Voya Investment Management LLC | 63,289 | $8.87M | 0.01% | −6,928−9.9% | Reduced |
| Guggenheim Capital LLC | 62,663 | $8.78M | 0.07% | +2,836+4.7% | Added |
| Schroder Investment Management Group | 62,121 | $8.61M | 0.01% | +48,354+351.2% | Added |
| Horizon Investments, LLC | 61,049 | $8.55M | 0.11% | −217−0.4% | Reduced |
| Korea Investment CORP | 60,408 | $8.46M | 0.02% | −1,100−1.8% | Reduced |
| O'Shaughnessy Asset Management, LLC | 59,989 | $8.40M | 0.05% | +31,677+111.9% | Added |
| Toronto Dominion Bank | 58,984 | $8.26M | 0.02% | −7,933−11.9% | Reduced |
| NEOS Investment Management LLC | 57,301 | $8.03M | 0.06% | +20,490+55.7% | Added |
| Lazard Asset Management LLC | 56,836 | $7.96M | 0.01% | −1,295−2.2% | Reduced |
| Baader Bank INC | 55,974 | $7.83M | 0.65% | +55,974 | New |
| Rhenman & Partners Asset Management AB | 55,000 | $7.70M | 0.85% | +43,000+358.3% | Added |
| Macquarie Group Ltd | 53,761 | $7.53M | 0.01% | −1,563−2.8% | Reduced |
| Envestnet Asset Management Inc | 53,390 | $7.48M | 0.00% | −2,686−4.8% | Reduced |
| Raymond James Financial Inc | 53,342 | $7.47M | 0.00% | +1,345+2.6% | Added |
| Privium Fund Management B.V. | 51,925 | $7.27M | 1.31% | +31,425+153.3% | Added |
| Eversept Partners, LP | 51,765 | $7.25M | 0.56% | +51,765 | New |
| Public Employees Retirement System of Ohio | 49,029 | $6.87M | 0.02% | +3,674+8.1% | Added |
| State of New Jersey Common Pension Fund D | 48,945 | $6.86M | 0.03% | +699+1.4% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 48,308 | $6.77M | 0.04% | +561+1.2% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 47,947 | $6.72M | 0.01% | −8,291−14.7% | Reduced |
| Capital Fund Management S.A. | 47,727 | $6.69M | 0.07% | −69,967−59.4% | Reduced |
| Nisa Investment Advisors, LLC | 47,556 | $6.66M | 0.03% | −3,346−6.6% | Reduced |
| Mariner, LLC | 47,514 | $6.66M | 0.01% | +11,599+32.3% | Added |
| CWM, LLC | 47,455 | $6.65M | 0.02% | +12,673+36.4% | Added |
| Resona Asset Management Co.,Ltd. | 47,260 | $6.61M | 0.03% | −2,367−4.8% | Reduced |
| Oversea-Chinese Banking CORP Ltd | 46,203 | $6.47M | 0.17% | +223+0.5% | Added |
| Nissay Asset Management Corp | 45,472 | $6.37M | 0.04% | +654+1.5% | Added |
| CIBC Asset Management Inc | 45,113 | $6.32M | 0.02% | +23+0.1% | Added |
| Erste Asset Management GmbH | 45,585 | $6.31M | 0.06% | −1,038−2.2% | Reduced |
| Danske Bank A/S | 44,710 | $6.26M | 0.02% | −10,686−19.3% | Reduced |
| Ethic Inc. | 44,496 | $6.23M | 0.10% | +32,058+257.7% | Added |
| Daiwa Securities Group Inc. | 44,075 | $6.17M | 0.02% | +4,947+12.6% | Added |
| Arizona State Retirement System | 43,419 | $6.08M | 0.03% | +666+1.6% | Added |
| State of Michigan Retirement System | 43,103 | $6.04M | 0.03% | −248,200−85.2% | Reduced |
| Gateway Investment Advisers LLC | 42,326 | $5.93M | 0.06% | +1,851+4.6% | Added |
| Generali Asset Management SPA SGR | 40,925 | $5.73M | 0.12% | −757−1.8% | Reduced |
| Mercer Global Advisors Inc | 40,535 | $5.68M | 0.01% | +2,920+7.8% | Added |
| Swiss Life Asset Management Ltd | 40,445 | $5.67M | 0.03% | −21,970−35.2% | Reduced |
| Bridgewater Associates, LP | 39,983 | $5.60M | 0.02% | +39,983 | New |
| The PNC Financial Services Group, Inc. | 39,702 | $5.56M | 0.00% | +1,613+4.2% | Added |
| Natixis Advisors, L.P. | 39,516 | $5.54M | 0.01% | +1,317+3.4% | Added |
| Orion Investment Co | 39,429 | $5.52M | 1.76% | +6,528+19.8% | Added |
| Generali Investments CEE, investicni spolecnost, a.s. | 38,755 | $5.43M | 0.41% | 00.0% | Unchanged |
| JustInvest LLC | 38,674 | $5.42M | 0.06% | +3,746+10.7% | Added |
| Hillman Capital Management, Inc. | 38,354 | $5.37M | 3.13% | −3,618−8.6% | Reduced |
| Vinva Investment Management Ltd | 38,704 | $5.36M | 0.11% | −20,158−34.2% | Reduced |
| Teacher Retirement System of Texas | 37,793 | $5.29M | 0.02% | −3,182−7.8% | Reduced |
| Stifel Financial Corp | 37,591 | $5.27M | 0.00% | +26,477+238.2% | Added |
| Credit Agricole S A | 37,452 | $5.25M | 0.02% | +37,452 | New |
| Czech National Bank | 37,238 | $5.22M | 0.04% | +1,422+4.0% | Added |
| Calamos Advisors LLC | 36,970 | $5.18M | 0.02% | 00.0% | Unchanged |
| IFM Investors Pty Ltd | 37,490 | $5.15M | 0.05% | +1,738+4.9% | Added |
| GF Fund Management Co. Ltd. | 36,409 | $5.10M | 0.09% | −44−0.1% | Reduced |