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 |
|---|---|---|---|---|---|
| MetLife Investment Management | 36,365 | $5.09M | 0.02% | −960−2.6% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 32,907 | $5.01M | 0.01% | +5,040+18.1% | Added |
| KBC Group NV | 35,459 | $4.97M | 0.01% | +255+0.7% | Added |
| NorthCrest Asset Manangement, LLC | 32,636 | $4.97M | 0.12% | −33−0.1% | Reduced |
| Grimes & Company, Inc. | 35,297 | $4.94M | 0.12% | −5,727−14.0% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 35,208 | $4.93M | 0.02% | −729−2.0% | Reduced |
| Tang Capital Management LLC | 35,000 | $4.90M | 0.19% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 34,862 | $4.88M | 0.01% | +531+1.5% | Added |
| Ensign Peak Advisors, Inc | 34,786 | $4.87M | 0.01% | −975−2.7% | Reduced |
| North Growth Management Ltd. | 34,000 | $4.73M | 0.82% | 00.0% | Unchanged |
| Comerica Bank | 33,670 | $4.72M | 0.02% | +12,561+59.5% | Added |
| Brevan Howard Capital Management LP | 33,511 | $4.69M | 0.07% | +20,055+149.0% | Added |
| AMF Pensionsforsakring AB | 33,479 | $4.69M | 0.03% | −25,636−43.4% | Reduced |
| Meitav Dash Investments Ltd | 33,400 | $4.68M | 0.06% | 00.0% | Unchanged |
| Impax Asset Management Group plc | 33,056 | $4.63M | 0.03% | −470−1.4% | Reduced |
| ExodusPoint Capital Management, LP | 31,931 | $4.47M | 0.06% | −97,560−75.3% | Reduced |
| USS Investment Management Ltd | 31,870 | $4.46M | 0.02% | 00.0% | Unchanged |
| Retirement Systems of Alabama | 31,275 | $4.38M | 0.01% | −167−0.5% | Reduced |
| Jefferies Financial Group Inc. | 30,600 | $4.29M | 0.04% | −6,517−17.6% | Reduced |
| Verition Fund Management LLC | 30,037 | $4.21M | 0.02% | +6,724+28.8% | Added |
| CWA Asset Management Group, LLC | 29,693 | $4.16M | 0.15% | +3,082+11.6% | Added |
| China Universal Asset Management Co., Ltd. | 29,570 | $4.14M | 0.34% | −3,187−9.7% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 29,083 | $4.07M | 0.02% | −38,148−56.7% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 28,953 | $4.06M | 0.03% | +1,532+5.6% | Added |
| DnB Asset Management AS | 28,218 | $3.95M | 0.01% | +791+2.9% | Added |
| Lighthouse Investment Partners, LLC | 28,000 | $3.92M | 0.14% | +28,000 | New |
| Amalgamated Bank | 27,782 | $3.89M | 0.03% | −518−1.8% | Reduced |
| Mn Services Vermogensbeheer B.V. | 26,600 | $3.73M | 0.02% | 00.0% | Unchanged |
| Farmers Trust Co | 25,971 | $3.64M | 0.63% | −3,556−12.0% | Reduced |
| Glenmede Investment Management, LP | 25,891 | $3.63M | 0.02% | −449−1.7% | Reduced |
| CIBC Bancorp USA Inc. | 25,593 | $3.59M | 0.02% | +25,593 | New |
| Fluent Financial, LLC | 25,543 | $3.58M | 1.40% | +25,543 | New |
| Forsta Ap-Fonden | 25,200 | $3.53M | 0.02% | +1,000+4.1% | Added |
| Toroso Investments, LLC | 25,036 | $3.51M | 0.01% | +3,052+13.9% | Added |
| Bank of Nova Scotia | 24,351 | $3.41M | 0.01% | +8,017+49.1% | Added |
| Profund Advisors LLC | 24,131 | $3.38M | 0.11% | −3,043−11.2% | Reduced |
| Natixis | 24,036 | $3.37M | 0.02% | −10,745−30.9% | Reduced |
| Ilmarinen Mutual Pension Insurance Co | 24,000 | $3.36M | 0.03% | 00.0% | Unchanged |
| Utah Retirement Systems | 23,996 | $3.36M | 0.03% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 23,599 | $3.31M | 0.03% | +1,241+5.6% | Added |
| Leuthold Group, LLC | 23,517 | $3.29M | 0.36% | +23,517 | New |
| Leonteq Securities AG | 23,117 | $3.24M | 0.17% | −85,751−78.8% | Reduced |
| Kovitz Investment Group Partners, LLC | 22,949 | $3.21M | 0.01% | +4,628+25.3% | Added |
| SEI Investments Co | 22,831 | $3.20M | 0.00% | +803+3.6% | Added |
| Old North State Wealth Management, LLC | 22,269 | $3.12M | 1.46% | +2,045+10.1% | Added |
| AIA Group Ltd | 22,161 | $3.10M | 0.05% | +15,309+223.4% | Added |
| ICICI Prudential Asset Management Co Ltd | 21,703 | $3.04M | 0.32% | +415+1.9% | Added |
| Elo Mutual Pension Insurance Co | 21,602 | $3.03M | 0.05% | +3,668+20.5% | Added |
| New York Life Investment Management LLC | 21,484 | $3.01M | 0.03% | −852−3.8% | Reduced |
| US Bancorp | 21,433 | $3.00M | 0.00% | +4,324+25.3% | Added |
| SRS Capital Advisors, Inc. | 21,381 | $3.00M | 0.04% | +21,048+6,320.7% | Added |
| Xponance, Inc. | 21,324 | $2.99M | 0.02% | −55−0.3% | Reduced |
| British Columbia Investment Management Corp | 21,058 | $2.95M | 0.02% | −1,976−8.6% | Reduced |
| Cetera Investment Advisers | 20,888 | $2.93M | 0.00% | +8,000+62.1% | Added |
| Bokf, NA | 20,280 | $2.84M | 0.04% | −1,131−5.3% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 20,021 | $2.80M | 0.02% | +1,918+10.6% | Added |
| UniSuper Management Pty Ltd | 20,001 | $2.80M | 0.02% | +1,588+8.6% | Added |
| Inspire Trust Co, N.A. | 20,000 | $2.80M | 0.51% | +2,000+11.1% | Added |
| Vontobel Holding Ltd. | 19,988 | $2.80M | 0.01% | +6,540+48.6% | Added |
| Group One Trading, L.P. | 19,310 | $2.70M | 0.08% | −70,908−78.6% | Reduced |
| Kinneret Advisory, LLC | 19,254 | $2.70M | 0.23% | −86−0.4% | Reduced |
| Morningstar Investment Management LLC | 18,779 | $2.63M | 0.10% | +18,779 | New |
| Janney Montgomery Scott LLC | 18,703 | $2.62M | 0.01% | −396−2.1% | Reduced |
| Louisiana State Employees Retirement System | 18,400 | $2.58M | 0.04% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 18,260 | $2.56M | 0.00% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 18,182 | $2.55M | 0.03% | −877−4.6% | Reduced |
| Triglav Skladi, D.O.O. | 18,130 | $2.54M | 0.17% | +103+0.6% | Added |
| Leo Wealth, LLC | 18,112 | $2.54M | 0.33% | −11−0.1% | Reduced |
| Commonwealth Equity Services, LLC | 18,017 | $2.52M | 0.00% | −10,534−36.9% | Reduced |
| ADAR1 Capital Management, LLC | 18,000 | $2.52M | 0.25% | +12,900+252.9% | Added |
| Hourglass Capital, LLC | 17,970 | $2.52M | 0.57% | 00.0% | Unchanged |
| SummitTX Capital, L.P. | 17,379 | $2.43M | 0.10% | −37,591−68.4% | Reduced |
| Lombard Odier Asset Management (Switzerland) SA | 17,264 | $2.42M | 0.11% | +834+5.1% | Added |
| ISAM Funds (UK) Ltd | 17,191 | $2.41M | 0.49% | +12,666+279.9% | Added |
| Yousif Capital Management, LLC | 17,076 | $2.39M | 0.03% | −2,675−13.5% | Reduced |
| iA Global Asset Management Inc. | 16,978 | $2.38M | 0.03% | +754+4.6% | Added |
| Oregon Public Employees Retirement Fund | 16,741 | $2.35M | 0.03% | +4,143+32.9% | Added |
| Captrust Financial Advisors | 16,532 | $2.32M | 0.00% | +1,937+13.3% | Added |
| OP Asset Management Ltd | 16,246 | $2.28M | 0.03% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 15,929 | $2.23M | 0.02% | −906−5.4% | Reduced |
| Synovus Financial Corp | 15,595 | $2.18M | 0.02% | −370−2.3% | Reduced |
| Clark Estates Inc | 15,300 | $2.14M | 0.49% | 00.0% | Unchanged |
| Avanza Fonder AB | 15,287 | $2.14M | 0.06% | 00.0% | Unchanged |
| Banque Cantonale Vaudoise | 15,145 | $2.12M | 0.08% | −3,335−18.0% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 14,899 | $2.09M | 0.01% | 00.0% | Unchanged |
| M&T Bank Corp | 14,655 | $2.05M | 0.01% | −847−5.5% | Reduced |
| Stoneridge Investment Partners LLC | 14,599 | $2.04M | 1.40% | 00.0% | Unchanged |
| Gabelli Funds LLC | 14,100 | $1.98M | 0.01% | 00.0% | Unchanged |
| Blair William & Co | 14,020 | $1.96M | 0.01% | −824−5.6% | Reduced |
| Oppenheimer & Co Inc | 13,610 | $1.91M | 0.02% | +11,346+501.1% | Added |
| Two Sigma Advisers, LP | 13,500 | $1.89M | 0.00% | −442,000−97.0% | Reduced |
| Evoke Wealth, LLC | 13,372 | $1.87M | 0.04% | +225+1.7% | Added |
| Pathstone Holdings, LLC | 12,984 | $1.82M | 0.01% | +1,387+12.0% | Added |
| Beacon Investment Advisory Services, Inc. | 12,930 | $1.81M | 0.08% | 00.0% | Unchanged |
| Public Sector Pension Investment Board | 12,846 | $1.80M | 0.01% | +1,594+14.2% | Added |
| Baird Financial Group, Inc. | 12,748 | $1.79M | 0.00% | +8,075+172.8% | Added |
| Norinchukin Bank, The | 12,628 | $1.77M | 0.02% | +143+1.1% | Added |
| Provident Co of the Employees of the Hebrew University LTD | 12,529 | $1.75M | 1.75% | 00.0% | Unchanged |
| B. Metzler seel. Sohn & Co. AG | 12,482 | $1.75M | 0.02% | 00.0% | Unchanged |
| Ritholtz Wealth Management | 11,680 | $1.64M | 0.03% | +5,604+92.2% | Added |