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 |
|---|---|---|---|---|---|
| Neuberger Berman Group LLC | 10,978 | $1.54M | 0.00% | −138−1.2% | Reduced |
| K.J. Harrison & Partners Inc | 10,006 | $1.55M | 0.22% | +10,006 | New |
| Advisor Group Holdings, Inc. | 11,593 | $1.58M | 0.00% | +2,858+32.7% | Added |
| Wealthfront Advisers LLC | 11,324 | $1.59M | 0.00% | +2,640+30.4% | Added |
| Teachers Retirement System of the State of Kentucky | 11,437 | $1.60M | 0.01% | 00.0% | Unchanged |
| Ostrum Asset Management | 11,458 | $1.61M | 0.07% | −3,067−21.1% | Reduced |
| Pallas Capital Advisors LLC | 11,625 | $1.63M | 0.06% | −740−6.0% | Reduced |
| Public Employees Retirement Association of Colorado | 11,669 | $1.64M | 0.01% | 00.0% | Unchanged |
| Ritholtz Wealth Management | 11,680 | $1.64M | 0.03% | +5,604+92.2% | Added |
| B. Metzler seel. Sohn & Co. AG | 12,482 | $1.75M | 0.02% | 00.0% | Unchanged |
| Provident Co of the Employees of the Hebrew University LTD | 12,529 | $1.75M | 1.75% | 00.0% | Unchanged |
| Norinchukin Bank, The | 12,628 | $1.77M | 0.02% | +143+1.1% | Added |
| Baird Financial Group, Inc. | 12,748 | $1.79M | 0.00% | +8,075+172.8% | Added |
| Public Sector Pension Investment Board | 12,846 | $1.80M | 0.01% | +1,594+14.2% | Added |
| Beacon Investment Advisory Services, Inc. | 12,930 | $1.81M | 0.08% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 12,984 | $1.82M | 0.01% | +1,387+12.0% | Added |
| Evoke Wealth, LLC | 13,372 | $1.87M | 0.04% | +225+1.7% | Added |
| Two Sigma Advisers, LP | 13,500 | $1.89M | 0.00% | −442,000−97.0% | Reduced |
| Oppenheimer & Co Inc | 13,610 | $1.91M | 0.02% | +11,346+501.1% | Added |
| Blair William & Co | 14,020 | $1.96M | 0.01% | −824−5.6% | Reduced |
| Gabelli Funds LLC | 14,100 | $1.98M | 0.01% | 00.0% | Unchanged |
| Stoneridge Investment Partners LLC | 14,599 | $2.04M | 1.40% | 00.0% | Unchanged |
| M&T Bank Corp | 14,655 | $2.05M | 0.01% | −847−5.5% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 14,899 | $2.09M | 0.01% | 00.0% | Unchanged |
| Banque Cantonale Vaudoise | 15,145 | $2.12M | 0.08% | −3,335−18.0% | Reduced |
| Avanza Fonder AB | 15,287 | $2.14M | 0.06% | 00.0% | Unchanged |
| Clark Estates Inc | 15,300 | $2.14M | 0.49% | 00.0% | Unchanged |
| Synovus Financial Corp | 15,595 | $2.18M | 0.02% | −370−2.3% | Reduced |
| Mutual of America Capital Management LLC | 15,929 | $2.23M | 0.02% | −906−5.4% | Reduced |
| OP Asset Management Ltd | 16,246 | $2.28M | 0.03% | 00.0% | Unchanged |
| Captrust Financial Advisors | 16,532 | $2.32M | 0.00% | +1,937+13.3% | Added |
| Oregon Public Employees Retirement Fund | 16,741 | $2.35M | 0.03% | +4,143+32.9% | Added |
| iA Global Asset Management Inc. | 16,978 | $2.38M | 0.03% | +754+4.6% | Added |
| Yousif Capital Management, LLC | 17,076 | $2.39M | 0.03% | −2,675−13.5% | Reduced |
| ISAM Funds (UK) Ltd | 17,191 | $2.41M | 0.49% | +12,666+279.9% | Added |
| Lombard Odier Asset Management (Switzerland) SA | 17,264 | $2.42M | 0.11% | +834+5.1% | Added |
| SummitTX Capital, L.P. | 17,379 | $2.43M | 0.10% | −37,591−68.4% | Reduced |
| Hourglass Capital, LLC | 17,970 | $2.52M | 0.57% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 18,000 | $2.52M | 0.25% | +12,900+252.9% | Added |
| Commonwealth Equity Services, LLC | 18,017 | $2.52M | 0.00% | −10,534−36.9% | Reduced |
| Leo Wealth, LLC | 18,112 | $2.54M | 0.33% | −11−0.1% | Reduced |
| Triglav Skladi, D.O.O. | 18,130 | $2.54M | 0.17% | +103+0.6% | Added |
| State of Alaska, Department of Revenue | 18,182 | $2.55M | 0.03% | −877−4.6% | Reduced |
| Janus Henderson Group PLC | 18,260 | $2.56M | 0.00% | 00.0% | Unchanged |
| Louisiana State Employees Retirement System | 18,400 | $2.58M | 0.04% | 00.0% | Unchanged |
| Janney Montgomery Scott LLC | 18,703 | $2.62M | 0.01% | −396−2.1% | Reduced |
| Morningstar Investment Management LLC | 18,779 | $2.63M | 0.10% | +18,779 | New |
| Kinneret Advisory, LLC | 19,254 | $2.70M | 0.23% | −86−0.4% | Reduced |
| Group One Trading, L.P. | 19,310 | $2.70M | 0.08% | −70,908−78.6% | Reduced |
| Vontobel Holding Ltd. | 19,988 | $2.80M | 0.01% | +6,540+48.6% | Added |
| Inspire Trust Co, N.A. | 20,000 | $2.80M | 0.51% | +2,000+11.1% | Added |
| UniSuper Management Pty Ltd | 20,001 | $2.80M | 0.02% | +1,588+8.6% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 20,021 | $2.80M | 0.02% | +1,918+10.6% | Added |
| Bokf, NA | 20,280 | $2.84M | 0.04% | −1,131−5.3% | Reduced |
| Cetera Investment Advisers | 20,888 | $2.93M | 0.00% | +8,000+62.1% | Added |
| British Columbia Investment Management Corp | 21,058 | $2.95M | 0.02% | −1,976−8.6% | Reduced |
| Xponance, Inc. | 21,324 | $2.99M | 0.02% | −55−0.3% | Reduced |
| SRS Capital Advisors, Inc. | 21,381 | $3.00M | 0.04% | +21,048+6,320.7% | Added |
| US Bancorp | 21,433 | $3.00M | 0.00% | +4,324+25.3% | Added |
| New York Life Investment Management LLC | 21,484 | $3.01M | 0.03% | −852−3.8% | Reduced |
| Elo Mutual Pension Insurance Co | 21,602 | $3.03M | 0.05% | +3,668+20.5% | Added |
| ICICI Prudential Asset Management Co Ltd | 21,703 | $3.04M | 0.32% | +415+1.9% | Added |
| AIA Group Ltd | 22,161 | $3.10M | 0.05% | +15,309+223.4% | Added |
| Old North State Wealth Management, LLC | 22,269 | $3.12M | 1.46% | +2,045+10.1% | Added |
| SEI Investments Co | 22,831 | $3.20M | 0.00% | +803+3.6% | Added |
| Kovitz Investment Group Partners, LLC | 22,949 | $3.21M | 0.01% | +4,628+25.3% | Added |
| Leonteq Securities AG | 23,117 | $3.24M | 0.17% | −85,751−78.8% | Reduced |
| Leuthold Group, LLC | 23,517 | $3.29M | 0.36% | +23,517 | New |
| Police & Firemen's Retirement System of New Jersey | 23,599 | $3.31M | 0.03% | +1,241+5.6% | Added |
| Utah Retirement Systems | 23,996 | $3.36M | 0.03% | 00.0% | Unchanged |
| Ilmarinen Mutual Pension Insurance Co | 24,000 | $3.36M | 0.03% | 00.0% | Unchanged |
| Natixis | 24,036 | $3.37M | 0.02% | −10,745−30.9% | Reduced |
| Profund Advisors LLC | 24,131 | $3.38M | 0.11% | −3,043−11.2% | Reduced |
| Bank of Nova Scotia | 24,351 | $3.41M | 0.01% | +8,017+49.1% | Added |
| Toroso Investments, LLC | 25,036 | $3.51M | 0.01% | +3,052+13.9% | Added |
| Forsta Ap-Fonden | 25,200 | $3.53M | 0.02% | +1,000+4.1% | Added |
| Fluent Financial, LLC | 25,543 | $3.58M | 1.40% | +25,543 | New |
| CIBC Bancorp USA Inc. | 25,593 | $3.59M | 0.02% | +25,593 | New |
| Glenmede Investment Management, LP | 25,891 | $3.63M | 0.02% | −449−1.7% | Reduced |
| Farmers Trust Co | 25,971 | $3.64M | 0.63% | −3,556−12.0% | Reduced |
| Mn Services Vermogensbeheer B.V. | 26,600 | $3.73M | 0.02% | 00.0% | Unchanged |
| Amalgamated Bank | 27,782 | $3.89M | 0.03% | −518−1.8% | Reduced |
| Lighthouse Investment Partners, LLC | 28,000 | $3.92M | 0.14% | +28,000 | New |
| DnB Asset Management AS | 28,218 | $3.95M | 0.01% | +791+2.9% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 28,953 | $4.06M | 0.03% | +1,532+5.6% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 29,083 | $4.07M | 0.02% | −38,148−56.7% | Reduced |
| China Universal Asset Management Co., Ltd. | 29,570 | $4.14M | 0.34% | −3,187−9.7% | Reduced |
| CWA Asset Management Group, LLC | 29,693 | $4.16M | 0.15% | +3,082+11.6% | Added |
| Verition Fund Management LLC | 30,037 | $4.21M | 0.02% | +6,724+28.8% | Added |
| Jefferies Financial Group Inc. | 30,600 | $4.29M | 0.04% | −6,517−17.6% | Reduced |
| Retirement Systems of Alabama | 31,275 | $4.38M | 0.01% | −167−0.5% | Reduced |
| USS Investment Management Ltd | 31,870 | $4.46M | 0.02% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 31,931 | $4.47M | 0.06% | −97,560−75.3% | Reduced |
| Impax Asset Management Group plc | 33,056 | $4.63M | 0.03% | −470−1.4% | Reduced |
| Meitav Dash Investments Ltd | 33,400 | $4.68M | 0.06% | 00.0% | Unchanged |
| AMF Pensionsforsakring AB | 33,479 | $4.69M | 0.03% | −25,636−43.4% | Reduced |
| Brevan Howard Capital Management LP | 33,511 | $4.69M | 0.07% | +20,055+149.0% | Added |
| Comerica Bank | 33,670 | $4.72M | 0.02% | +12,561+59.5% | Added |
| North Growth Management Ltd. | 34,000 | $4.73M | 0.82% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 34,786 | $4.87M | 0.01% | −975−2.7% | Reduced |