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, Q1 2026
Institutional positions in Biogen Inc. as of Mar 31, 2026. 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
- 1,015
- +33 vs. Q4 2025
- Shares held
- 135.0M
- +15.4M (+12.9%) vs. Q4 2025
- Total value
- $24.7B
- +$3.70B (+17.6%) vs. Q4 2025
- New holders
- 138
- 402 more added
- Sold out
- 105
- 290 more reduced
20 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Oslo Pensjonsforsikring AS | 1,840 | $337.3K | 0.05% | +1,840 | New |
| Applied Finance Capital Management, LLC | 1,842 | $337.7K | 0.03% | +38+2.1% | Added |
| Westpac Banking Corp | 1,843 | $337.9K | 0.02% | −335−15.4% | Reduced |
| Investors Research Corp | 1,850 | $339.2K | 0.06% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 1,855 | $340.1K | 0.03% | +84+4.7% | Added |
| Flputnam Investment Management Co | 1,861 | $341.2K | 0.01% | −37−1.9% | Reduced |
| Forbes J M & Co LLP | 1,869 | $342.6K | 0.03% | 00.0% | Unchanged |
| Resonant Capital Advisors, LLC | 1,874 | $343.6K | 0.02% | +190+11.3% | Added |
| Forum Financial Management, LP | 1,890 | $346.5K | 0.00% | −3,997−67.9% | Reduced |
| Camelot Portfolios, LLC | 1,900 | $348.3K | 0.26% | 00.0% | Unchanged |
| Persistent Asset Partners Ltd | 1,903 | $348.9K | 0.14% | −971−33.8% | Reduced |
| TD Private Client Wealth LLC | 1,909 | $350.0K | 0.01% | +1,452+317.7% | Added |
| Stratos Wealth Partners, LTD. | 1,912 | $350.5K | 0.00% | −13−0.7% | Reduced |
| Sagespring Wealth Partners, LLC | 1,913 | $350.7K | 0.01% | +659+52.6% | Added |
| QTR Family Wealth, LLC | 1,990 | $356.1K | 0.15% | +138+7.5% | Added |
| Proathlete Wealth Management LLC | 1,944 | $356.4K | 0.10% | −164−7.8% | Reduced |
| Estabrook Capital Management | 2,000 | $366.7K | 0.05% | 00.0% | Unchanged |
| Northwest & Ethical Investments L.P. | 2,000 | $366.7K | 0.01% | 00.0% | Unchanged |
| Heritage Wealth Advisors | 2,009 | $368.3K | 0.01% | +9+0.4% | Added |
| Richwood Investment Advisors, LLC | 2,032 | $372.6K | 0.29% | −90−4.2% | Reduced |
| Procyon Private Wealth Partners, LLC | 2,063 | $378.2K | 0.02% | +666+47.7% | Added |
| Agp Franklin, LLC | 2,073 | $380.0K | 0.19% | +2,073 | New |
| BSW Wealth Partners | 2,074 | $380.2K | 0.05% | +165+8.6% | Added |
| Capital Investment Advisors, LLC | 2,087 | $382.6K | 0.01% | +86+4.3% | Added |
| Sectoral Asset Management Inc | 1,850 | $385.9K | 0.32% | −305−14.2% | Reduced |
| National Asset Management, Inc. | 2,064 | $387.1K | 0.03% | +68+3.4% | Added |
| Evercore Wealth Management, LLC | 2,112 | $387.2K | 0.01% | −30−1.4% | Reduced |
| DoubleLine ETF Adviser LP | 2,125 | $389.6K | 0.15% | +2,125 | New |
| Cidel Asset Management Inc | 2,129 | $390.3K | 0.02% | +190+9.8% | Added |
| Parcion Private Wealth LLC | 2,140 | $392.3K | 0.02% | +44+2.1% | Added |
| Simplicity Wealth,LLC | 2,149 | $394.0K | 0.02% | +197+10.1% | Added |
| Hantz Financial Services, Inc. | 2,157 | $395.0K | 0.01% | +321+17.5% | Added |
| Tower Research Capital LLC (TRC) | 2,159 | $395.8K | 0.01% | −1,672−43.6% | Reduced |
| Simplex Trading, LLC | 2,164 | $396.7K | 0.01% | −28,714−93.0% | Reduced |
| Navellier & Associates Inc | 2,164 | $396.7K | 0.04% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 2,125 | $398.6K | 0.01% | +273+14.7% | Added |
| Oppenheimer Asset Management Inc. | 2,204 | $404.1K | 0.00% | −808−26.8% | Reduced |
| Baker Avenue Asset Management, LP | 2,207 | $404.6K | 0.01% | +610+38.2% | Added |
| Concurrent Investment Advisors, LLC | 2,222 | $407.3K | 0.00% | −2,154−49.2% | Reduced |
| Inceptionr LLC | 2,248 | $412.1K | 0.10% | −2,628−53.9% | Reduced |
| Quantitative Investment Management, LLC | 2,255 | $413.0K | 0.04% | +641+39.7% | Added |
| Waddell & Associates, LLC | 2,264 | $415.1K | 0.02% | +522+30.0% | Added |
| Fayez Sarofim & Co | 2,300 | $421.7K | 0.00% | 00.0% | Unchanged |
| Philip James Wealth Mangement, LLC | 2,323 | $425.9K | 0.05% | −5−0.2% | Reduced |
| TCW Group Inc | 2,338 | $428.6K | 0.00% | +112+5.0% | Added |
| Citizens Financial Group Inc | 2,346 | $430.2K | 0.01% | +549+30.6% | Added |
| PDT Partners, LLC | 2,348 | $430.5K | 0.03% | 00.0% | Unchanged |
| Personal Cfo Solutions, LLC | 2,362 | $433.0K | 0.06% | −41−1.7% | Reduced |
| RSM US Wealth Management LLC | 2,380 | $436.3K | 0.01% | +3+0.1% | Added |
| TFB Advisors LLC | 2,423 | $444.2K | 0.23% | −25−1.0% | Reduced |
| Blackhawk Capital Partners LLC. | 2,426 | $444.8K | 0.16% | +339+16.2% | Added |
| Atria Investments LLC | 2,437 | $446.8K | 0.00% | −766−23.9% | Reduced |
| Crestwood Advisors Group LLC | 2,481 | $454.8K | 0.01% | +287+13.1% | Added |
| DKRT Investments Corp. | 2,500 | $458.3K | 0.12% | 00.0% | Unchanged |
| Prudential PLC | 2,508 | $459.8K | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 2,523 | $462.5K | 0.00% | +274+12.2% | Added |
| Ocean Capital Management, LLC | 2,540 | $465.7K | 0.10% | +125+5.2% | Added |
| Pitcairn Wealth Advisors LLC | 2,697 | $474.6K | 0.04% | +132+5.1% | Added |
| Eagle Global Advisors LLC | 2,600 | $476.7K | 0.02% | 00.0% | Unchanged |
| Westside Investment Management, Inc. | 2,637 | $477.9K | 0.07% | +125+5.0% | Added |
| Huntington National Bank | 2,607 | $477.9K | 0.00% | +160+6.5% | Added |
| Advus Financial Partners, LLC | 2,622 | $480.7K | 0.12% | +492+23.1% | Added |
| Tema ETFs LLC | 2,627 | $481.6K | 0.03% | +7+0.3% | Added |
| Frec Markets, Inc. | 2,628 | $481.8K | 0.08% | +474+22.0% | Added |
| Assetmark, Inc | 2,690 | $493.2K | 0.00% | +298+12.5% | Added |
| Steel Peak Wealth Management LLC | 2,704 | $495.8K | 0.02% | +2,704 | New |
| CSS LLC | 2,720 | $498.7K | 0.03% | −3,360−55.3% | Reduced |
| Oppenheimer & Co Inc | 2,720 | $498.7K | 0.01% | +2,720 | New |
| Klingenstein Fields & Co LP | 2,731 | $500.7K | 0.02% | 00.0% | Unchanged |
| Atomi Financial Group, Inc. | 2,742 | $502.6K | 0.02% | −536−16.4% | Reduced |
| Waterfront Wealth Inc. | 2,747 | $503.6K | 0.09% | −22−0.8% | Reduced |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 2,751 | $504.3K | 0.01% | +533+24.0% | Added |
| Uncommon Cents Investing LLC | 2,779 | $509.5K | 0.12% | 00.0% | Unchanged |
| Caerus Investment Advisors, LLC | 2,801 | $513.5K | 0.22% | +134+5.0% | Added |
| KCM Investment Advisors LLC | 2,803 | $513.9K | 0.02% | +4+0.1% | Added |
| Tiaa-Cref Individual & Institutional Services, LLC | 2,817 | $516.4K | 0.00% | +2,817 | New |
| Cim Investment Mangement Inc | 2,830 | $518.8K | 0.14% | −14−0.5% | Reduced |
| Aprio Wealth Management, LLC | 2,850 | $522.5K | 0.03% | +900+46.2% | Added |
| Wedmont Private Capital | 2,908 | $523.1K | 0.02% | +115+4.1% | Added |
| Horizon Kinetics Asset Management LLC | 2,857 | $523.8K | 0.01% | −131−4.4% | Reduced |
| Tower Trust & Investment Co | 2,868 | $525.7K | 0.35% | +11+0.4% | Added |
| Pictet & Cie (Europe) SA | 2,880 | $528.0K | 0.01% | −89−3.0% | Reduced |
| DGS Capital Management, LLC | 2,886 | $529.1K | 0.09% | +704+32.3% | Added |
| Legacy Capital Group California, Inc. | 2,901 | $531.8K | 0.20% | +2,901 | New |
| ISAM Funds (UK) Ltd | 2,916 | $534.6K | 0.26% | +2,916 | New |
| Motley Fool Asset Management LLC | 2,919 | $535.1K | 0.02% | +378+14.9% | Added |
| Hunter Associates Investment Management LLC | 2,939 | $539.0K | 0.07% | +53+1.8% | Added |
| Atlas Capital Advisors LLC | 2,958 | $542.3K | 0.06% | +114+4.0% | Added |
| Trust Co of Toledo NA | 2,965 | $543.6K | 0.05% | +458+18.3% | Added |
| Roberts Glore & Co Inc | 3,001 | $550.2K | 0.15% | −80−2.6% | Reduced |
| Sivia Capital Partners, LLC | 3,003 | $550.5K | 0.11% | +688+29.7% | Added |
| Prime Capital Investment Advisors, LLC | 3,030 | $555.4K | 0.01% | −196−6.1% | Reduced |
| NLB Skladi, upravljanje premozenja, d.o.o. | 3,055 | $560.1K | 0.03% | −18,952−86.1% | Reduced |
| Providence First Trust Co | 3,079 | $564.5K | 0.20% | +3,079 | New |
| Evergreen Capital Management LLC | 3,081 | $564.8K | 0.01% | +493+19.0% | Added |
| Cambridge Investment Research Advisors, Inc. | 3,113 | $571.0K | 0.00% | −4,706−60.2% | Reduced |
| Emerald Mutual Fund Advisers Trust | 3,117 | $571.4K | 0.03% | +652+26.5% | Added |
| F/M Investments LLC | 3,117 | $571.4K | 0.04% | +652+26.5% | Added |
| RDA Financial Network | 3,125 | $572.9K | 0.14% | −75−2.3% | Reduced |
| Bessemer Group Inc | 3,127 | $573.0K | 0.00% | +416+15.3% | Added |