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, Q4 2025
Institutional positions in Biogen Inc. as of Dec 31, 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
- 1,002
- +109 vs. Q3 2025
- Shares held
- 139.7M
- +8.71M (+6.6%) vs. Q3 2025
- Total value
- $24.6B
- +$6.26B (+34.1%) vs. Q3 2025
- New holders
- 191
- 323 more added
- Sold out
- 82
- 295 more reduced
16 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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 | 1,046 | $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, Q4 2025
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| LGT Fund Management Co Ltd. | 1,349 | $238.0K | 0.02% | +1,349 | New |
| Cary Street Partners Financial LLC | 1,355 | $238.5K | 0.01% | 00.0% | Unchanged |
| Cigna Investments Inc | 1,395 | $245.0K | 0.04% | −62−4.3% | Reduced |
| Resources Investment Advisors, LLC. | 1,392 | $245.0K | 0.00% | +1,392 | New |
| Procyon Private Wealth Partners, LLC | 1,397 | $245.9K | 0.01% | +1,397 | New |
| Verdence Capital Advisors LLC | 1,413 | $248.7K | 0.01% | −80−5.4% | Reduced |
| MONECO Advisors, LLC | 1,419 | $249.7K | 0.02% | +1,419 | New |
| Apollon Wealth Management, LLC | 1,421 | $250.1K | 0.00% | +1,421 | New |
| IFG Advisory, LLC | 1,425 | $250.8K | 0.01% | +1,425 | New |
| Kingswood Wealth Advisors, LLC | 1,431 | $251.8K | 0.01% | +1,431 | New |
| ING Groep NV | 1,434 | $252.4K | 0.00% | +1,434 | New |
| Journey Strategic Wealth LLC | 1,440 | $253.4K | 0.01% | +1,440 | New |
| Allegheny Financial Group LTD | 1,442 | $253.9K | 0.04% | −977−40.4% | Reduced |
| Marathon Trading Investment Management LLC | 1,450 | $255.2K | 0.03% | −300−17.1% | Reduced |
| Prasad Wealth Partners, LLC | 1,452 | $255.6K | 0.07% | 00.0% | Unchanged |
| Turtle Creek Wealth Advisors, LLC | 1,462 | $257.3K | 0.02% | +1,462 | New |
| FineMark National Bank & Trust | 1,463 | $257.5K | 0.01% | +1,463 | New |
| SG Trading Solutions, LLC | 1,467 | $258.0K | 0.06% | +1,467 | New |
| NorthRock Partners, LLC | 1,469 | $258.5K | 0.00% | −2,127−59.1% | Reduced |
| Moors & Cabot, Inc. | 1,499 | $263.8K | 0.01% | +1,499 | New |
| Perigon Wealth Management, LLC | 1,502 | $264.3K | 0.00% | +1,502 | New |
| Dorsey & Whitney Trust CO LLC | 1,506 | $265.0K | 0.01% | +1,506 | New |
| Great Valley Advisor Group, Inc. | 1,522 | $268.0K | 0.01% | −750−33.0% | Reduced |
| Modern Wealth Management, LLC | 1,533 | $269.8K | 0.00% | +26+1.7% | Added |
| Berkshire Asset Management LLC | 1,535 | $270.1K | 0.01% | −6−0.4% | Reduced |
| Alpha Family Trust | 1,540 | $271.0K | 0.12% | 00.0% | Unchanged |
| Poinciana Advisors Group, LLC | 1,541 | $271.2K | 0.21% | −13−0.8% | Reduced |
| Capital Performance Advisors LLP | 1,547 | $272.3K | 0.02% | +2+0.1% | Added |
| WMS Group LLC | 1,550 | $272.8K | 0.35% | +1,550 | New |
| Joel Isaacson & Co., LLC | 1,564 | $275.2K | 0.01% | −100−6.0% | Reduced |
| Advisory Services Network, LLC | 1,565 | $275.4K | 0.00% | −227−12.7% | Reduced |
| Aptus Capital Advisors, LLC | 1,568 | $276.0K | 0.00% | +1,568 | New |
| Walleye Capital LLC | 1,575 | $277.2K | 0.00% | −62−3.8% | Reduced |
| Baker Avenue Asset Management, LP | 1,597 | $281.1K | 0.01% | −1−0.1% | Reduced |
| Umb Bank N A | 1,599 | $281.4K | 0.00% | +163+11.4% | Added |
| CIBC Private Wealth Group, LLC | 1,604 | $282.2K | 0.00% | +415+34.9% | Added |
| One Wealth Advisors, LLC | 1,604 | $282.3K | 0.03% | +1,604 | New |
| Sumitomo Life Insurance Co | 1,605 | $282.5K | 0.01% | −12−0.7% | Reduced |
| Quantitative Investment Management, LLC | 1,614 | $284.0K | 0.03% | +1,614 | New |
| Trust Asset Management LLC | 1,617 | $284.6K | 0.02% | −58−3.5% | Reduced |
| Florida Financial Advisors, LLC | 1,624 | $285.8K | 0.08% | +1,624 | New |
| Financiere des Professionnels - Fonds d,investissement inc. | 1,646 | $289.7K | 0.02% | 00.0% | Unchanged |
| Transcend Wealth Collective, LLC | 1,649 | $290.2K | 0.02% | −30−1.8% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 1,652 | $290.7K | 0.00% | +1,652 | New |
| Farther Finance Advisors, LLC | 1,656 | $291.4K | 0.00% | +607+57.9% | Added |
| Everhart Financial Group, Inc. | 1,657 | $291.6K | 0.03% | +1,657 | New |
| Resonant Capital Advisors, LLC | 1,684 | $296.4K | 0.02% | +109+6.9% | Added |
| Peapack Gladstone Financial Corp | 1,688 | $297.0K | 0.00% | −180−9.6% | Reduced |
| Flagship Harbor Advisors, LLC | 1,692 | $297.8K | 0.01% | −607−26.4% | Reduced |
| Kera Capital Partners, Inc. | 1,665 | $299.5K | 0.04% | 00.0% | Unchanged |
| CX Institutional | 1,706 | $300.0K | 0.01% | +253+17.4% | Added |
| Optas, LLC | 1,706 | $300.2K | 0.05% | +73+4.5% | Added |
| AE Wealth Management LLC | 1,714 | $301.7K | 0.00% | +252+17.2% | Added |
| Investment House LLC | 1,730 | $304.5K | 0.01% | 00.0% | Unchanged |
| Plancorp, LLC | 1,737 | $305.7K | 0.01% | +141+8.8% | Added |
| Hancock Whitney Corp | 1,740 | $306.2K | 0.01% | 00.0% | Unchanged |
| Waddell & Associates, LLC | 1,742 | $306.6K | 0.02% | +23+1.3% | Added |
| Parkside Financial Bank & Trust | 1,771 | $311.7K | 0.02% | +32+1.8% | Added |
| SBI Securities Co., Ltd. | 1,775 | $312.4K | 0.01% | −311−14.9% | Reduced |
| Citizens Financial Group Inc | 1,797 | $316.3K | 0.00% | −200−10.0% | Reduced |
| EP Wealth Advisors, LLC | 1,800 | $316.8K | 0.00% | +1,800 | New |
| Applied Finance Capital Management, LLC | 1,804 | $317.5K | 0.02% | −1,074−37.3% | Reduced |
| Trail Ridge Investment Advisors, LLC | 1,807 | $318.0K | 0.14% | 00.0% | Unchanged |
| Mission Wealth Management, LP | 1,822 | $320.6K | 0.01% | +92+5.3% | Added |
| Abacus Planning Group, Inc. | 1,832 | $322.4K | 0.04% | +191+11.6% | Added |
| Claret Asset Management Corp | 1,833 | $323.0K | 0.04% | −5−0.3% | Reduced |
| Hantz Financial Services, Inc. | 1,836 | $323.0K | 0.00% | +200+12.2% | Added |
| Rock Point Advisors, LLC | 1,840 | $323.8K | 0.08% | 00.0% | Unchanged |
| Investors Research Corp | 1,850 | $325.6K | 0.06% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 1,852 | $326.7K | 0.01% | +1,224+194.9% | Added |
| Forbes J M & Co LLP | 1,869 | $328.9K | 0.03% | 00.0% | Unchanged |
| Flputnam Investment Management Co | 1,898 | $334.0K | 0.00% | −223−10.5% | Reduced |
| Camelot Portfolios, LLC | 1,900 | $334.4K | 0.21% | −200−9.5% | Reduced |
| BSW Wealth Partners | 1,909 | $336.0K | 0.04% | −79−4.0% | Reduced |
| DRW Securities, LLC | 1,955 | $337.8K | 0.03% | +1,955 | New |
| Stratos Wealth Partners, LTD. | 1,925 | $338.8K | 0.00% | +115+6.4% | Added |
| Cidel Asset Management Inc | 1,939 | $341.2K | 0.02% | −85−4.2% | Reduced |
| Aprio Wealth Management, LLC | 1,950 | $343.2K | 0.02% | +1,950 | New |
| Simplicity Wealth,LLC | 1,952 | $343.5K | 0.02% | +176+9.9% | Added |
| HighPoint Advisor Group LLC | 1,980 | $348.5K | 0.01% | +22+1.1% | Added |
| QTR Family Wealth, LLC | 1,852 | $350.0K | 0.15% | +92+5.2% | Added |
| National Asset Management, Inc. | 1,996 | $351.3K | 0.02% | −30−1.5% | Reduced |
| PKO Investment Management Joint-Stock Co | 2,000 | $352.0K | 0.03% | −4,000−66.7% | Reduced |
| Estabrook Capital Management | 2,000 | $352.0K | 0.05% | 00.0% | Unchanged |
| Heritage Wealth Advisors | 2,000 | $352.0K | 0.01% | 00.0% | Unchanged |
| Northwest & Ethical Investments L.P. | 2,000 | $352.0K | 0.01% | 00.0% | Unchanged |
| Capital Investment Advisors, LLC | 2,001 | $352.2K | 0.01% | −144−6.7% | Reduced |
| Sage Mountain Advisors LLC | 2,042 | $359.3K | 0.02% | −348−14.6% | Reduced |
| Wealthspire Advisors, LLC | 2,051 | $361.0K | 0.00% | +984+92.2% | Added |
| Exchange Traded Concepts, LLC | 2,084 | $366.8K | 0.00% | −367−15.0% | Reduced |
| Blackhawk Capital Partners LLC. | 2,087 | $367.3K | 0.14% | −1,238−37.2% | Reduced |
| Ausdal Financial Partners, Inc. | 2,088 | $367.5K | 0.02% | +2,088 | New |
| Parcion Private Wealth LLC | 2,096 | $368.9K | 0.02% | +477+29.5% | Added |
| Integrated Advisors Network LLC | 2,104 | $370.3K | 0.02% | −509−19.5% | Reduced |
| Proathlete Wealth Management LLC | 2,108 | $371.0K | 0.10% | +40+1.9% | Added |
| Advus Financial Partners, LLC | 2,130 | $374.9K | 0.09% | +60+2.9% | Added |
| Evercore Wealth Management, LLC | 2,142 | $377.0K | 0.01% | 00.0% | Unchanged |
| Frec Markets, Inc. | 2,154 | $379.2K | 0.11% | +2,154 | New |
| Sectoral Asset Management Inc | 2,155 | $379.3K | 0.30% | −220−9.3% | Reduced |
| Navellier & Associates Inc | 2,164 | $380.8K | 0.04% | 00.0% | Unchanged |