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, 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 | 1,047 | $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, 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 |
|---|---|---|---|---|---|
| Westpac Banking Corp | 2,178 | $383.3K | 0.02% | +340+18.5% | Added |
| Nicolet Bankshares Inc | 2,169 | $381.7K | 0.06% | −623−22.3% | Reduced |
| Navellier & Associates Inc | 2,164 | $380.8K | 0.04% | 00.0% | Unchanged |
| Sectoral Asset Management Inc | 2,155 | $379.3K | 0.30% | −220−9.3% | Reduced |
| Frec Markets, Inc. | 2,154 | $379.2K | 0.11% | +2,154 | New |
| Evercore Wealth Management, LLC | 2,142 | $377.0K | 0.01% | 00.0% | Unchanged |
| Advus Financial Partners, LLC | 2,130 | $374.9K | 0.09% | +60+2.9% | Added |
| Proathlete Wealth Management LLC | 2,108 | $371.0K | 0.10% | +40+1.9% | Added |
| Integrated Advisors Network LLC | 2,104 | $370.3K | 0.02% | −509−19.5% | Reduced |
| Parcion Private Wealth LLC | 2,096 | $368.9K | 0.02% | +477+29.5% | Added |
| Ausdal Financial Partners, Inc. | 2,088 | $367.5K | 0.02% | +2,088 | New |
| Blackhawk Capital Partners LLC. | 2,087 | $367.3K | 0.14% | −1,238−37.2% | Reduced |
| Exchange Traded Concepts, LLC | 2,084 | $366.8K | 0.00% | −367−15.0% | Reduced |
| Wealthspire Advisors, LLC | 2,051 | $361.0K | 0.00% | +984+92.2% | Added |
| Sage Mountain Advisors LLC | 2,042 | $359.3K | 0.02% | −348−14.6% | Reduced |
| Capital Investment Advisors, LLC | 2,001 | $352.2K | 0.01% | −144−6.7% | 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 |
| PKO Investment Management Joint-Stock Co | 2,000 | $352.0K | 0.03% | −4,000−66.7% | Reduced |
| National Asset Management, Inc. | 1,996 | $351.3K | 0.02% | −30−1.5% | Reduced |
| QTR Family Wealth, LLC | 1,852 | $350.0K | 0.15% | +92+5.2% | Added |
| HighPoint Advisor Group LLC | 1,980 | $348.5K | 0.01% | +22+1.1% | Added |
| Simplicity Wealth,LLC | 1,952 | $343.5K | 0.02% | +176+9.9% | Added |
| Aprio Wealth Management, LLC | 1,950 | $343.2K | 0.02% | +1,950 | New |
| Cidel Asset Management Inc | 1,939 | $341.2K | 0.02% | −85−4.2% | Reduced |
| Stratos Wealth Partners, LTD. | 1,925 | $338.8K | 0.00% | +115+6.4% | Added |
| DRW Securities, LLC | 1,955 | $337.8K | 0.03% | +1,955 | New |
| BSW Wealth Partners | 1,909 | $336.0K | 0.04% | −79−4.0% | Reduced |
| Camelot Portfolios, LLC | 1,900 | $334.4K | 0.21% | −200−9.5% | Reduced |
| Flputnam Investment Management Co | 1,898 | $334.0K | 0.00% | −223−10.5% | Reduced |
| Forbes J M & Co LLP | 1,869 | $328.9K | 0.03% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 1,852 | $326.7K | 0.01% | +1,224+194.9% | Added |
| Investors Research Corp | 1,850 | $325.6K | 0.06% | 00.0% | Unchanged |
| Rock Point Advisors, LLC | 1,840 | $323.8K | 0.08% | 00.0% | Unchanged |
| 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 |
| Abacus Planning Group, Inc. | 1,832 | $322.4K | 0.04% | +191+11.6% | Added |
| Mission Wealth Management, LP | 1,822 | $320.6K | 0.01% | +92+5.3% | Added |
| Trail Ridge Investment Advisors, LLC | 1,807 | $318.0K | 0.14% | 00.0% | Unchanged |
| Applied Finance Capital Management, LLC | 1,804 | $317.5K | 0.02% | −1,074−37.3% | Reduced |
| EP Wealth Advisors, LLC | 1,800 | $316.8K | 0.00% | +1,800 | New |
| Citizens Financial Group Inc | 1,797 | $316.3K | 0.00% | −200−10.0% | Reduced |
| SBI Securities Co., Ltd. | 1,775 | $312.4K | 0.01% | −311−14.9% | Reduced |
| Parkside Financial Bank & Trust | 1,771 | $311.7K | 0.02% | +32+1.8% | Added |
| Waddell & Associates, LLC | 1,742 | $306.6K | 0.02% | +23+1.3% | Added |
| Hancock Whitney Corp | 1,740 | $306.2K | 0.01% | 00.0% | Unchanged |
| Plancorp, LLC | 1,737 | $305.7K | 0.01% | +141+8.8% | Added |
| Investment House LLC | 1,730 | $304.5K | 0.01% | 00.0% | Unchanged |
| AE Wealth Management LLC | 1,714 | $301.7K | 0.00% | +252+17.2% | Added |
| Optas, LLC | 1,706 | $300.2K | 0.05% | +73+4.5% | Added |
| CX Institutional | 1,706 | $300.0K | 0.01% | +253+17.4% | Added |
| Kera Capital Partners, Inc. | 1,665 | $299.5K | 0.04% | 00.0% | Unchanged |
| Flagship Harbor Advisors, LLC | 1,692 | $297.8K | 0.01% | −607−26.4% | Reduced |
| Peapack Gladstone Financial Corp | 1,688 | $297.0K | 0.00% | −180−9.6% | Reduced |
| Resonant Capital Advisors, LLC | 1,684 | $296.4K | 0.02% | +109+6.9% | Added |
| Everhart Financial Group, Inc. | 1,657 | $291.6K | 0.03% | +1,657 | New |
| Farther Finance Advisors, LLC | 1,656 | $291.4K | 0.00% | +607+57.9% | Added |
| Envestnet Portfolio Solutions, Inc. | 1,652 | $290.7K | 0.00% | +1,652 | New |
| Transcend Wealth Collective, LLC | 1,649 | $290.2K | 0.02% | −30−1.8% | Reduced |
| Financiere des Professionnels - Fonds d,investissement inc. | 1,646 | $289.7K | 0.02% | 00.0% | Unchanged |
| Florida Financial Advisors, LLC | 1,624 | $285.8K | 0.08% | +1,624 | New |
| Trust Asset Management LLC | 1,617 | $284.6K | 0.02% | −58−3.5% | Reduced |
| Quantitative Investment Management, LLC | 1,614 | $284.0K | 0.03% | +1,614 | New |
| Sumitomo Life Insurance Co | 1,605 | $282.5K | 0.01% | −12−0.7% | Reduced |
| One Wealth Advisors, LLC | 1,604 | $282.3K | 0.03% | +1,604 | New |
| CIBC Private Wealth Group, LLC | 1,604 | $282.2K | 0.00% | +415+34.9% | Added |
| Umb Bank N A | 1,599 | $281.4K | 0.00% | +163+11.4% | Added |
| Baker Avenue Asset Management, LP | 1,597 | $281.1K | 0.01% | −1−0.1% | Reduced |
| Walleye Capital LLC | 1,575 | $277.2K | 0.00% | −62−3.8% | Reduced |
| Aptus Capital Advisors, LLC | 1,568 | $276.0K | 0.00% | +1,568 | New |
| Advisory Services Network, LLC | 1,565 | $275.4K | 0.00% | −227−12.7% | Reduced |
| Joel Isaacson & Co., LLC | 1,564 | $275.2K | 0.01% | −100−6.0% | Reduced |
| WMS Group LLC | 1,550 | $272.8K | 0.35% | +1,550 | New |
| Capital Performance Advisors LLP | 1,547 | $272.3K | 0.02% | +2+0.1% | Added |
| Poinciana Advisors Group, LLC | 1,541 | $271.2K | 0.21% | −13−0.8% | Reduced |
| Alpha Family Trust | 1,540 | $271.0K | 0.12% | 00.0% | Unchanged |
| Berkshire Asset Management LLC | 1,535 | $270.1K | 0.01% | −6−0.4% | Reduced |
| Modern Wealth Management, LLC | 1,533 | $269.8K | 0.00% | +26+1.7% | Added |
| Great Valley Advisor Group, Inc. | 1,522 | $268.0K | 0.01% | −750−33.0% | Reduced |
| Dorsey & Whitney Trust CO LLC | 1,506 | $265.0K | 0.01% | +1,506 | New |
| Perigon Wealth Management, LLC | 1,502 | $264.3K | 0.00% | +1,502 | New |
| Moors & Cabot, Inc. | 1,499 | $263.8K | 0.01% | +1,499 | New |
| NorthRock Partners, LLC | 1,469 | $258.5K | 0.00% | −2,127−59.1% | Reduced |
| SG Trading Solutions, LLC | 1,467 | $258.0K | 0.06% | +1,467 | New |
| FineMark National Bank & Trust | 1,463 | $257.5K | 0.01% | +1,463 | New |
| Turtle Creek Wealth Advisors, LLC | 1,462 | $257.3K | 0.02% | +1,462 | New |
| Prasad Wealth Partners, LLC | 1,452 | $255.6K | 0.07% | 00.0% | Unchanged |
| Marathon Trading Investment Management LLC | 1,450 | $255.2K | 0.03% | −300−17.1% | Reduced |
| Allegheny Financial Group LTD | 1,442 | $253.9K | 0.04% | −977−40.4% | Reduced |
| Journey Strategic Wealth LLC | 1,440 | $253.4K | 0.01% | +1,440 | New |
| ING Groep NV | 1,434 | $252.4K | 0.00% | +1,434 | New |
| Kingswood Wealth Advisors, LLC | 1,431 | $251.8K | 0.01% | +1,431 | New |
| IFG Advisory, LLC | 1,425 | $250.8K | 0.01% | +1,425 | New |
| Apollon Wealth Management, LLC | 1,421 | $250.1K | 0.00% | +1,421 | New |
| MONECO Advisors, LLC | 1,419 | $249.7K | 0.02% | +1,419 | New |
| Verdence Capital Advisors LLC | 1,413 | $248.7K | 0.01% | −80−5.4% | Reduced |
| Procyon Private Wealth Partners, LLC | 1,397 | $245.9K | 0.01% | +1,397 | New |
| Resources Investment Advisors, LLC. | 1,392 | $245.0K | 0.00% | +1,392 | New |
| Cigna Investments Inc | 1,395 | $245.0K | 0.04% | −62−4.3% | Reduced |