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 |
|---|---|---|---|---|---|
| CI Private Wealth, LLC | 34,862 | $4.88M | 0.01% | +531+1.5% | Added |
| Tang Capital Management LLC | 35,000 | $4.90M | 0.19% | 00.0% | Unchanged |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 35,208 | $4.93M | 0.02% | −729−2.0% | Reduced |
| Grimes & Company, Inc. | 35,297 | $4.94M | 0.12% | −5,727−14.0% | Reduced |
| NorthCrest Asset Manangement, LLC | 32,636 | $4.97M | 0.12% | −33−0.1% | Reduced |
| KBC Group NV | 35,459 | $4.97M | 0.01% | +255+0.7% | Added |
| Wealth Enhancement Advisory Services, LLC | 32,907 | $5.01M | 0.01% | +5,040+18.1% | Added |
| MetLife Investment Management | 36,365 | $5.09M | 0.02% | −960−2.6% | Reduced |
| GF Fund Management Co. Ltd. | 36,409 | $5.10M | 0.09% | −44−0.1% | Reduced |
| IFM Investors Pty Ltd | 37,490 | $5.15M | 0.05% | +1,738+4.9% | Added |
| Calamos Advisors LLC | 36,970 | $5.18M | 0.02% | 00.0% | Unchanged |
| Czech National Bank | 37,238 | $5.22M | 0.04% | +1,422+4.0% | Added |
| Credit Agricole S A | 37,452 | $5.25M | 0.02% | +37,452 | New |
| Stifel Financial Corp | 37,591 | $5.27M | 0.00% | +26,477+238.2% | Added |
| Teacher Retirement System of Texas | 37,793 | $5.29M | 0.02% | −3,182−7.8% | Reduced |
| Vinva Investment Management Ltd | 38,704 | $5.36M | 0.11% | −20,158−34.2% | Reduced |
| Hillman Capital Management, Inc. | 38,354 | $5.37M | 3.13% | −3,618−8.6% | Reduced |
| JustInvest LLC | 38,674 | $5.42M | 0.06% | +3,746+10.7% | Added |
| Generali Investments CEE, investicni spolecnost, a.s. | 38,755 | $5.43M | 0.41% | 00.0% | Unchanged |
| Orion Investment Co | 39,429 | $5.52M | 1.76% | +6,528+19.8% | Added |
| Natixis Advisors, L.P. | 39,516 | $5.54M | 0.01% | +1,317+3.4% | Added |
| The PNC Financial Services Group, Inc. | 39,702 | $5.56M | 0.00% | +1,613+4.2% | Added |
| Bridgewater Associates, LP | 39,983 | $5.60M | 0.02% | +39,983 | New |
| Swiss Life Asset Management Ltd | 40,445 | $5.67M | 0.03% | −21,970−35.2% | Reduced |
| Mercer Global Advisors Inc | 40,535 | $5.68M | 0.01% | +2,920+7.8% | Added |
| Generali Asset Management SPA SGR | 40,925 | $5.73M | 0.12% | −757−1.8% | Reduced |
| Gateway Investment Advisers LLC | 42,326 | $5.93M | 0.06% | +1,851+4.6% | Added |
| State of Michigan Retirement System | 43,103 | $6.04M | 0.03% | −248,200−85.2% | Reduced |
| Arizona State Retirement System | 43,419 | $6.08M | 0.03% | +666+1.6% | Added |
| Daiwa Securities Group Inc. | 44,075 | $6.17M | 0.02% | +4,947+12.6% | Added |
| Ethic Inc. | 44,496 | $6.23M | 0.10% | +32,058+257.7% | Added |
| Danske Bank A/S | 44,710 | $6.26M | 0.02% | −10,686−19.3% | Reduced |
| Erste Asset Management GmbH | 45,585 | $6.31M | 0.06% | −1,038−2.2% | Reduced |
| CIBC Asset Management Inc | 45,113 | $6.32M | 0.02% | +23+0.1% | Added |
| Nissay Asset Management Corp | 45,472 | $6.37M | 0.04% | +654+1.5% | Added |
| Oversea-Chinese Banking CORP Ltd | 46,203 | $6.47M | 0.17% | +223+0.5% | Added |
| Resona Asset Management Co.,Ltd. | 47,260 | $6.61M | 0.03% | −2,367−4.8% | Reduced |
| CWM, LLC | 47,455 | $6.65M | 0.02% | +12,673+36.4% | Added |
| Mariner, LLC | 47,514 | $6.66M | 0.01% | +11,599+32.3% | Added |
| Nisa Investment Advisors, LLC | 47,556 | $6.66M | 0.03% | −3,346−6.6% | Reduced |
| Capital Fund Management S.A. | 47,727 | $6.69M | 0.07% | −69,967−59.4% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 47,947 | $6.72M | 0.01% | −8,291−14.7% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 48,308 | $6.77M | 0.04% | +561+1.2% | Added |
| State of New Jersey Common Pension Fund D | 48,945 | $6.86M | 0.03% | +699+1.4% | Added |
| Public Employees Retirement System of Ohio | 49,029 | $6.87M | 0.02% | +3,674+8.1% | Added |
| Eversept Partners, LP | 51,765 | $7.25M | 0.56% | +51,765 | New |
| Privium Fund Management B.V. | 51,925 | $7.27M | 1.31% | +31,425+153.3% | Added |
| Raymond James Financial Inc | 53,342 | $7.47M | 0.00% | +1,345+2.6% | Added |
| Envestnet Asset Management Inc | 53,390 | $7.48M | 0.00% | −2,686−4.8% | Reduced |
| Macquarie Group Ltd | 53,761 | $7.53M | 0.01% | −1,563−2.8% | Reduced |
| Rhenman & Partners Asset Management AB | 55,000 | $7.70M | 0.85% | +43,000+358.3% | Added |
| Baader Bank INC | 55,974 | $7.83M | 0.65% | +55,974 | New |
| Lazard Asset Management LLC | 56,836 | $7.96M | 0.01% | −1,295−2.2% | Reduced |
| NEOS Investment Management LLC | 57,301 | $8.03M | 0.06% | +20,490+55.7% | Added |
| Toronto Dominion Bank | 58,984 | $8.26M | 0.02% | −7,933−11.9% | Reduced |
| O'Shaughnessy Asset Management, LLC | 59,989 | $8.40M | 0.05% | +31,677+111.9% | Added |
| Korea Investment CORP | 60,408 | $8.46M | 0.02% | −1,100−1.8% | Reduced |
| Horizon Investments, LLC | 61,049 | $8.55M | 0.11% | −217−0.4% | Reduced |
| Schroder Investment Management Group | 62,121 | $8.61M | 0.01% | +48,354+351.2% | Added |
| Guggenheim Capital LLC | 62,663 | $8.78M | 0.07% | +2,836+4.7% | Added |
| Voya Investment Management LLC | 63,289 | $8.87M | 0.01% | −6,928−9.9% | Reduced |
| Mackenzie Financial Corp | 63,754 | $8.93M | 0.01% | −18,582−22.6% | Reduced |
| Ossiam | 65,603 | $9.19M | 0.12% | +15,116+29.9% | Added |
| Treasurer of the State of North Carolina | 65,682 | $9.20M | 0.03% | −2,560−3.8% | Reduced |
| Cinctive Capital Management LP | 65,837 | $9.22M | 0.46% | +51,035+344.8% | Added |
| Royal London Asset Management Ltd | 65,971 | $9.24M | 0.02% | −1,775−2.6% | Reduced |
| Edmond de Rothschild Holding S.A. | 66,970 | $9.38M | 0.14% | +7,290+12.2% | Added |
| Mirae Asset Global Investments Co., Ltd. | 67,010 | $9.39M | 0.03% | +5,987+9.8% | Added |
| Nomura Asset Management Co Ltd | 67,369 | $9.44M | 0.02% | +13,028+24.0% | Added |
| Quantinno Capital Management LP | 67,852 | $9.50M | 0.03% | +13,686+25.3% | Added |
| Asset Management One Co.,Ltd. | 67,907 | $9.51M | 0.03% | +5,097+8.1% | Added |
| Creative Planning | 68,583 | $9.61M | 0.01% | +13,176+23.8% | Added |
| LPL Financial LLC | 70,164 | $9.83M | 0.00% | −300.0% | Reduced |
| American Century Companies Inc | 70,393 | $9.86M | 0.01% | −10,860−13.4% | Reduced |
| Banque Pictet & Cie SA | 71,663 | $10.0M | 0.10% | −362−0.5% | Reduced |
| National Bank of Canada | 73,117 | $10.2M | 0.01% | −70,095−48.9% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 75,171 | $10.5M | 0.03% | −2,570−3.3% | Reduced |
| Sector Gamma AS | 75,475 | $10.6M | 2.62% | +24,836+49.0% | Added |
| State of Wisconsin Investment Board | 77,899 | $10.9M | 0.03% | −869−1.1% | Reduced |
| Silverarc Capital Management, LLC | 80,419 | $11.3M | 1.63% | +80,419 | New |
| Thrivent Financial for Lutherans | 82,091 | $11.5M | 0.02% | +63,896+351.2% | Added |
| Cerity Partners LLC | 82,248 | $11.5M | 0.02% | +35,696+76.7% | Added |
| Sphera Funds Management Ltd. | 82,738 | $11.6M | 2.75% | 00.0% | Unchanged |
| Illinois Municipal Retirement Fund | 83,120 | $11.6M | 0.15% | −23,801−22.3% | Reduced |
| APG Asset Management N.V. | 98,274 | $11.7M | 0.03% | −210.0% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 84,660 | $11.9M | 0.03% | +3,465+4.3% | Added |
| State of Tennessee, Treasury Department | 85,463 | $12.0M | 0.04% | +48,919+133.9% | Added |
| Cresset Asset Management, LLC | 89,322 | $12.5M | 0.06% | +3,355+3.9% | Added |
| Woodline Partners LP | 96,666 | $13.5M | 0.06% | +1,106+1.2% | Added |
| Point72 Europe (London) LLP | 99,013 | $13.9M | 0.75% | +3,333+3.5% | Added |
| Handelsbanken Fonder AB | 99,316 | $13.9M | 0.04% | +1,715+1.8% | Added |
| Logos Global Management LP | 100,000 | $14.0M | 1.38% | −100,000−50.0% | Reduced |
| DekaBank Deutsche Girozentrale | 108,721 | $15.0M | 0.03% | 00.0% | Unchanged |
| New York State Teachers Retirement System | 110,194 | $15.4M | 0.03% | −455−0.4% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 113,553 | $15.9M | 0.01% | −33,929−23.0% | Reduced |
| Aviva PLC | 115,706 | $16.2M | 0.03% | +7,032+6.5% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 116,928 | $16.4M | 0.05% | −100,810−46.3% | Reduced |
| AXA Investment Managers S.A. | 118,311 | $16.6M | 0.04% | +118,311 | New |
| Letko, Brosseau & Associates Inc | 120,620 | $16.9M | 0.29% | +2,965+2.5% | Added |
| Manufacturers Life Insurance Company, The | 120,851 | $16.9M | 0.01% | +13,098+12.2% | Added |