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 |
|---|---|---|---|---|---|
| Basepoint Wealth LLC | 1,178 | $215.9K | 0.12% | +14+1.2% | Added |
| Western Wealth Management, LLC | 1,183 | $216.9K | 0.01% | −71−5.7% | Reduced |
| Aaron Wealth Advisors | 1,185 | $217.2K | 0.01% | +1,185 | New |
| Independent Advisor Alliance | 1,186 | $217.4K | 0.00% | −4,801−80.2% | Reduced |
| Regions Financial Corp | 1,188 | $217.8K | 0.00% | −49−4.0% | Reduced |
| Allegiance Financial Group Advisory Services LLC | 1,200 | $220.0K | 0.04% | +1,200 | New |
| Platform Technology Partners | 1,201 | $220.2K | 0.04% | +1,201 | New |
| Analyst IMS Investment Management Services Ltd. | 1,208 | $221.0K | 0.01% | 00.0% | Unchanged |
| Wealthspire Advisors, LLC | 1,209 | $221.6K | 0.00% | −842−41.1% | Reduced |
| D.A. Davidson & Co. | 1,218 | $223.3K | 0.00% | +1,218 | New |
| Alphadyne Asset Management LP | 1,218 | $223.3K | 0.03% | +1,218 | New |
| Patton Fund Management, Inc. | 1,244 | $228.1K | 0.04% | 00.0% | Unchanged |
| Johnson Investment Counsel Inc | 1,246 | $228.4K | 0.00% | −23−1.8% | Reduced |
| MMBG Investment Advisors Co. | 1,248 | $228.8K | 0.02% | 00.0% | Unchanged |
| SageView Advisory Group, LLC | 1,265 | $231.9K | 0.01% | +12+1.0% | Added |
| Diversified Trust Co | 1,266 | $232.1K | 0.00% | +1,266 | New |
| Boltwood Capital Management | 1,274 | $233.6K | 0.06% | +133+11.7% | Added |
| Clear Wave Wealth Management LLC | 1,280 | $234.7K | 0.06% | +1,280 | New |
| Financial Symmetry Inc | 1,248 | $236.1K | 0.08% | +1,248 | New |
| Aptus Capital Advisors, LLC | 1,288 | $236.1K | 0.00% | −280−17.9% | Reduced |
| PDS Planning, Inc | 1,294 | $237.2K | 0.02% | +3+0.2% | Added |
| State of Wyoming | 1,296 | $237.6K | 0.03% | +3+0.2% | Added |
| PKO Investment Management Joint-Stock Co | 1,300 | $238.3K | 0.02% | −700−35.0% | Reduced |
| We Are One Seven, LLC | 1,309 | $240.0K | 0.00% | −942−41.8% | Reduced |
| WMS Group LLC | 1,311 | $240.3K | 0.35% | −239−15.4% | Reduced |
| Bridgewater Advisors Inc. | 1,223 | $242.8K | 0.01% | +11+0.9% | Added |
| Collaborative Fund Advisors, LLC | 1,327 | $243.3K | 0.15% | +1,327 | New |
| Livforsakringsbolaget Skandia, Omsesidigt | 1,330 | $243.7K | 0.01% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 1,331 | $244.0K | 0.02% | +266+25.0% | Added |
| AlphaCore Capital LLC | 1,332 | $244.2K | 0.01% | −1,222−47.8% | Reduced |
| DRW Securities, LLC | 1,335 | $244.5K | 0.01% | −620−31.7% | Reduced |
| Two Sigma Securities, LLC | 1,335 | $244.7K | 0.03% | −4,095−75.4% | Reduced |
| Ameritas Investment Partners, Inc. | 1,336 | $244.9K | 0.01% | 00.0% | Unchanged |
| Cary Street Partners Financial LLC | 1,343 | $246.2K | 0.01% | −12−0.9% | Reduced |
| Phoenix Holdings Ltd. | 1,371 | $251.3K | 0.00% | −1,762−56.2% | Reduced |
| Financial Solutions Advisory Group, Inc. | 1,372 | $251.5K | 0.03% | +1,372 | New |
| Miracle Mile Advisors, LLC | 1,377 | $252.4K | 0.00% | +109+8.6% | Added |
| GTS Securities LLC | 1,381 | $253.2K | 0.01% | +236+20.6% | Added |
| Vinva Investment Management Ltd | 1,360 | $255.1K | 0.00% | +1,360 | New |
| Cigna Investments Inc | 1,395 | $256.0K | 0.04% | 00.0% | Unchanged |
| Verdence Capital Advisors LLC | 1,414 | $259.2K | 0.02% | +1+0.1% | Added |
| Principal Securities, Inc. | 1,420 | $260.3K | 0.00% | +1,420 | New |
| MONECO Advisors, LLC | 1,436 | $263.3K | 0.02% | +17+1.2% | Added |
| Wellington-Altus USA Inc. | 1,219 | $263.4K | 0.16% | +1,219 | New |
| 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 |
| Prasad Wealth Partners, LLC | 1,450 | $265.9K | 0.07% | −2−0.1% | Reduced |
| Allegheny Financial Group LTD | 1,450 | $266.0K | 0.04% | +8+0.6% | Added |
| NorthRock Partners, LLC | 1,452 | $266.4K | 0.00% | −17−1.2% | Reduced |
| SIH Partners, LLLP | 1,463 | $268.2K | 0.01% | +1,463 | New |
| Kingswood Wealth Advisors, LLC | 1,482 | $271.7K | 0.01% | +51+3.6% | Added |
| Riversedge Advisors, LLC | 1,529 | $280.3K | 0.05% | +241+18.7% | Added |
| Modern Wealth Management, LLC | 1,529 | $281.0K | 0.00% | −4−0.3% | Reduced |
| Berkshire Asset Management LLC | 1,534 | $281.2K | 0.01% | −1−0.1% | Reduced |
| Mather Group, LLC. | 1,534 | $281.2K | 0.00% | +252+19.7% | Added |
| Alpha Family Trust | 1,540 | $282.3K | 0.14% | 00.0% | Unchanged |
| Poinciana Advisors Group, LLC | 1,541 | $282.5K | 0.22% | 00.0% | Unchanged |
| Dorsey & Whitney Trust CO LLC | 1,546 | $283.4K | 0.02% | +40+2.7% | Added |
| Turtle Creek Wealth Advisors, LLC | 1,546 | $283.4K | 0.02% | +84+5.7% | Added |
| SBI Securities Co., Ltd. | 1,555 | $285.1K | 0.01% | −220−12.4% | Reduced |
| Engineers Gate Manager LP | 1,558 | $285.6K | 0.00% | +1,558 | New |
| Capital Performance Advisors LLP | 1,561 | $286.2K | 0.02% | +14+0.9% | Added |
| PFG Investments, LLC | 1,568 | $287.5K | 0.01% | +1,568 | New |
| Journey Strategic Wealth LLC | 1,589 | $291.3K | 0.01% | +149+10.3% | Added |
| Perigon Wealth Management, LLC | 1,600 | $293.3K | 0.01% | +98+6.5% | Added |
| Prospera Financial Services Inc | 1,610 | $295.1K | 0.00% | −630−28.1% | Reduced |
| Advisory Services Network, LLC | 1,612 | $295.5K | 0.00% | +47+3.0% | Added |
| Joel Isaacson & Co., LLC | 1,614 | $295.9K | 0.01% | +50+3.2% | Added |
| Trust Asset Management LLC | 1,617 | $296.4K | 0.02% | 00.0% | Unchanged |
| Mission Wealth Management, LP | 1,621 | $297.1K | 0.01% | −201−11.0% | Reduced |
| Moors & Cabot, Inc. | 1,653 | $303.0K | 0.01% | +154+10.3% | Added |
| Plancorp, LLC | 1,754 | $303.4K | 0.01% | +17+1.0% | Added |
| One Wealth Advisors, LLC | 1,655 | $303.4K | 0.04% | +51+3.2% | Added |
| Optas, LLC | 1,656 | $303.6K | 0.05% | −50−2.9% | Reduced |
| AE Wealth Management LLC | 1,667 | $305.7K | 0.00% | −47−2.7% | Reduced |
| Sumitomo Life Insurance Co | 1,672 | $306.5K | 0.01% | +67+4.2% | Added |
| TCG Advisory Services, LLC | 1,685 | $308.9K | 0.01% | +1,685 | New |
| LVW Advisors, LLC | 1,689 | $309.6K | 0.03% | +1,689 | New |
| Peapack Gladstone Financial Corp | 1,691 | $310.0K | 0.00% | +3+0.2% | Added |
| EP Wealth Advisors, LLC | 1,701 | $311.9K | 0.00% | −99−5.5% | Reduced |
| Parallax Volatility Advisers, L.P. | 1,689 | $314.1K | 0.01% | −548−24.5% | Reduced |
| Kera Capital Partners, Inc. | 1,723 | $315.9K | 0.04% | +58+3.5% | Added |
| CX Institutional | 1,725 | $316.0K | 0.01% | +19+1.1% | Added |
| Pure Financial Advisors, Inc. | 1,724 | $316.0K | 0.00% | +551+47.0% | Added |
| Abacus Planning Group, Inc. | 1,760 | $322.7K | 0.04% | −72−3.9% | Reduced |
| Umb Bank N A | 1,762 | $323.0K | 0.00% | +163+10.2% | Added |
| Ostrum Asset Management | 1,767 | $323.9K | 0.02% | −709−28.6% | Reduced |
| Integrated Advisors Network LLC | 1,767 | $323.9K | 0.02% | −337−16.0% | Reduced |
| Stevens Capital Management LP | 1,774 | $325.0K | 0.05% | +1,774 | New |
| D'Orazio & Associates, Inc. | 1,777 | $325.8K | 0.04% | +1,777 | New |
| Hancock Whitney Corp | 1,735 | $327.8K | 0.01% | −5−0.3% | Reduced |
| Trail Ridge Investment Advisors, LLC | 1,807 | $331.3K | 0.14% | 00.0% | Unchanged |
| VestGen Advisors, LLC | 1,662 | $331.3K | 0.01% | −5,222−75.9% | Reduced |
| Brand Asset Management Group, Inc. | 1,814 | $332.6K | 0.09% | +1,814 | New |
| Exchange Traded Concepts, LLC | 1,823 | $334.2K | 0.00% | −261−12.5% | Reduced |
| 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 |
| Claret Asset Management Corp | 1,834 | $336.0K | 0.04% | +1+0.1% | Added |
| Everhart Financial Group, Inc. | 1,838 | $337.0K | 0.03% | +181+10.9% | Added |
| Rock Point Advisors, LLC | 1,840 | $337.3K | 0.09% | 00.0% | Unchanged |