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 |
|---|---|---|---|---|---|
| QTR Family Wealth, LLC | 1,990 | $356.1K | 0.15% | +138+7.5% | Added |
| Sagespring Wealth Partners, LLC | 1,913 | $350.7K | 0.01% | +659+52.6% | Added |
| Stratos Wealth Partners, LTD. | 1,912 | $350.5K | 0.00% | −13−0.7% | Reduced |
| TD Private Client Wealth LLC | 1,909 | $350.0K | 0.01% | +1,452+317.7% | Added |
| Persistent Asset Partners Ltd | 1,903 | $348.9K | 0.14% | −971−33.8% | Reduced |
| Camelot Portfolios, LLC | 1,900 | $348.3K | 0.26% | 00.0% | Unchanged |
| Forum Financial Management, LP | 1,890 | $346.5K | 0.00% | −3,997−67.9% | Reduced |
| Resonant Capital Advisors, LLC | 1,874 | $343.6K | 0.02% | +190+11.3% | Added |
| Forbes J M & Co LLP | 1,869 | $342.6K | 0.03% | 00.0% | Unchanged |
| Flputnam Investment Management Co | 1,861 | $341.2K | 0.01% | −37−1.9% | Reduced |
| Parkside Financial Bank & Trust | 1,855 | $340.1K | 0.03% | +84+4.7% | Added |
| Investors Research Corp | 1,850 | $339.2K | 0.06% | 00.0% | Unchanged |
| Westpac Banking Corp | 1,843 | $337.9K | 0.02% | −335−15.4% | Reduced |
| Applied Finance Capital Management, LLC | 1,842 | $337.7K | 0.03% | +38+2.1% | Added |
| Rock Point Advisors, LLC | 1,840 | $337.3K | 0.09% | 00.0% | Unchanged |
| Oslo Pensjonsforsikring AS | 1,840 | $337.3K | 0.05% | +1,840 | New |
| Everhart Financial Group, Inc. | 1,838 | $337.0K | 0.03% | +181+10.9% | Added |
| Claret Asset Management Corp | 1,834 | $336.0K | 0.04% | +1+0.1% | Added |
| Colonial River Wealth Management, LLC | 1,830 | $335.5K | 0.12% | −443−19.5% | Reduced |
| Transcend Wealth Collective, LLC | 1,830 | $335.5K | 0.03% | +181+11.0% | Added |
| Exchange Traded Concepts, LLC | 1,823 | $334.2K | 0.00% | −261−12.5% | Reduced |
| Brand Asset Management Group, Inc. | 1,814 | $332.6K | 0.09% | +1,814 | New |
| VestGen Advisors, LLC | 1,662 | $331.3K | 0.01% | −5,222−75.9% | Reduced |
| Trail Ridge Investment Advisors, LLC | 1,807 | $331.3K | 0.14% | 00.0% | Unchanged |
| Hancock Whitney Corp | 1,735 | $327.8K | 0.01% | −5−0.3% | Reduced |
| D'Orazio & Associates, Inc. | 1,777 | $325.8K | 0.04% | +1,777 | New |
| Stevens Capital Management LP | 1,774 | $325.0K | 0.05% | +1,774 | New |
| Integrated Advisors Network LLC | 1,767 | $323.9K | 0.02% | −337−16.0% | Reduced |
| Ostrum Asset Management | 1,767 | $323.9K | 0.02% | −709−28.6% | Reduced |
| Umb Bank N A | 1,762 | $323.0K | 0.00% | +163+10.2% | Added |
| Abacus Planning Group, Inc. | 1,760 | $322.7K | 0.04% | −72−3.9% | Reduced |
| Pure Financial Advisors, Inc. | 1,724 | $316.0K | 0.00% | +551+47.0% | Added |
| CX Institutional | 1,725 | $316.0K | 0.01% | +19+1.1% | Added |
| Kera Capital Partners, Inc. | 1,723 | $315.9K | 0.04% | +58+3.5% | Added |
| Parallax Volatility Advisers, L.P. | 1,689 | $314.1K | 0.01% | −548−24.5% | Reduced |
| EP Wealth Advisors, LLC | 1,701 | $311.9K | 0.00% | −99−5.5% | Reduced |
| Peapack Gladstone Financial Corp | 1,691 | $310.0K | 0.00% | +3+0.2% | Added |
| LVW Advisors, LLC | 1,689 | $309.6K | 0.03% | +1,689 | New |
| TCG Advisory Services, LLC | 1,685 | $308.9K | 0.01% | +1,685 | New |
| Sumitomo Life Insurance Co | 1,672 | $306.5K | 0.01% | +67+4.2% | Added |
| AE Wealth Management LLC | 1,667 | $305.7K | 0.00% | −47−2.7% | Reduced |
| Optas, LLC | 1,656 | $303.6K | 0.05% | −50−2.9% | Reduced |
| One Wealth Advisors, LLC | 1,655 | $303.4K | 0.04% | +51+3.2% | Added |
| Plancorp, LLC | 1,754 | $303.4K | 0.01% | +17+1.0% | Added |
| Moors & Cabot, Inc. | 1,653 | $303.0K | 0.01% | +154+10.3% | Added |
| Mission Wealth Management, LP | 1,621 | $297.1K | 0.01% | −201−11.0% | Reduced |
| Trust Asset Management LLC | 1,617 | $296.4K | 0.02% | 00.0% | Unchanged |
| Joel Isaacson & Co., LLC | 1,614 | $295.9K | 0.01% | +50+3.2% | Added |
| Advisory Services Network, LLC | 1,612 | $295.5K | 0.00% | +47+3.0% | Added |
| Prospera Financial Services Inc | 1,610 | $295.1K | 0.00% | −630−28.1% | Reduced |
| Perigon Wealth Management, LLC | 1,600 | $293.3K | 0.01% | +98+6.5% | Added |
| Journey Strategic Wealth LLC | 1,589 | $291.3K | 0.01% | +149+10.3% | Added |
| PFG Investments, LLC | 1,568 | $287.5K | 0.01% | +1,568 | New |
| Capital Performance Advisors LLP | 1,561 | $286.2K | 0.02% | +14+0.9% | Added |
| Engineers Gate Manager LP | 1,558 | $285.6K | 0.00% | +1,558 | New |
| SBI Securities Co., Ltd. | 1,555 | $285.1K | 0.01% | −220−12.4% | Reduced |
| Turtle Creek Wealth Advisors, LLC | 1,546 | $283.4K | 0.02% | +84+5.7% | Added |
| Dorsey & Whitney Trust CO LLC | 1,546 | $283.4K | 0.02% | +40+2.7% | Added |
| Poinciana Advisors Group, LLC | 1,541 | $282.5K | 0.22% | 00.0% | Unchanged |
| Alpha Family Trust | 1,540 | $282.3K | 0.14% | 00.0% | Unchanged |
| Mather Group, LLC. | 1,534 | $281.2K | 0.00% | +252+19.7% | Added |
| Berkshire Asset Management LLC | 1,534 | $281.2K | 0.01% | −1−0.1% | Reduced |
| Modern Wealth Management, LLC | 1,529 | $281.0K | 0.00% | −4−0.3% | Reduced |
| Riversedge Advisors, LLC | 1,529 | $280.3K | 0.05% | +241+18.7% | Added |
| Kingswood Wealth Advisors, LLC | 1,482 | $271.7K | 0.01% | +51+3.6% | Added |
| SIH Partners, LLLP | 1,463 | $268.2K | 0.01% | +1,463 | New |
| NorthRock Partners, LLC | 1,452 | $266.4K | 0.00% | −17−1.2% | Reduced |
| Allegheny Financial Group LTD | 1,450 | $266.0K | 0.04% | +8+0.6% | Added |
| Prasad Wealth Partners, LLC | 1,450 | $265.9K | 0.07% | −2−0.1% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 1,442 | $264.4K | 0.00% | −210−12.7% | Reduced |
| Apollon Wealth Management, LLC | 1,442 | $264.4K | 0.00% | +21+1.5% | Added |
| Wellington-Altus USA Inc. | 1,219 | $263.4K | 0.16% | +1,219 | New |
| MONECO Advisors, LLC | 1,436 | $263.3K | 0.02% | +17+1.2% | Added |
| Principal Securities, Inc. | 1,420 | $260.3K | 0.00% | +1,420 | New |
| Verdence Capital Advisors LLC | 1,414 | $259.2K | 0.02% | +1+0.1% | Added |
| Cigna Investments Inc | 1,395 | $256.0K | 0.04% | 00.0% | Unchanged |
| Vinva Investment Management Ltd | 1,360 | $255.1K | 0.00% | +1,360 | New |
| GTS Securities LLC | 1,381 | $253.2K | 0.01% | +236+20.6% | Added |
| Miracle Mile Advisors, LLC | 1,377 | $252.4K | 0.00% | +109+8.6% | Added |
| Financial Solutions Advisory Group, Inc. | 1,372 | $251.5K | 0.03% | +1,372 | New |
| Phoenix Holdings Ltd. | 1,371 | $251.3K | 0.00% | −1,762−56.2% | Reduced |
| Cary Street Partners Financial LLC | 1,343 | $246.2K | 0.01% | −12−0.9% | Reduced |
| Ameritas Investment Partners, Inc. | 1,336 | $244.9K | 0.01% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 1,335 | $244.7K | 0.03% | −4,095−75.4% | Reduced |
| DRW Securities, LLC | 1,335 | $244.5K | 0.01% | −620−31.7% | Reduced |
| AlphaCore Capital LLC | 1,332 | $244.2K | 0.01% | −1,222−47.8% | Reduced |
| Versant Capital Management, Inc | 1,331 | $244.0K | 0.02% | +266+25.0% | Added |
| Livforsakringsbolaget Skandia, Omsesidigt | 1,330 | $243.7K | 0.01% | 00.0% | Unchanged |
| Collaborative Fund Advisors, LLC | 1,327 | $243.3K | 0.15% | +1,327 | New |
| Bridgewater Advisors Inc. | 1,223 | $242.8K | 0.01% | +11+0.9% | Added |
| WMS Group LLC | 1,311 | $240.3K | 0.35% | −239−15.4% | Reduced |
| We Are One Seven, LLC | 1,309 | $240.0K | 0.00% | −942−41.8% | Reduced |
| PKO Investment Management Joint-Stock Co | 1,300 | $238.3K | 0.02% | −700−35.0% | Reduced |
| State of Wyoming | 1,296 | $237.6K | 0.03% | +3+0.2% | Added |
| PDS Planning, Inc | 1,294 | $237.2K | 0.02% | +3+0.2% | Added |
| Aptus Capital Advisors, LLC | 1,288 | $236.1K | 0.00% | −280−17.9% | Reduced |
| Financial Symmetry Inc | 1,248 | $236.1K | 0.08% | +1,248 | New |
| Clear Wave Wealth Management LLC | 1,280 | $234.7K | 0.06% | +1,280 | New |
| Boltwood Capital Management | 1,274 | $233.6K | 0.06% | +133+11.7% | Added |
| Diversified Trust Co | 1,266 | $232.1K | 0.00% | +1,266 | New |