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, Q3 2025
Institutional positions in Biogen Inc. as of Sep 30, 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
- 909
- +52 vs. Q2 2025
- Shares held
- 131.3M
- +3.52M (+2.8%) vs. Q2 2025
- Total value
- $18.4B
- +$2.32B (+14.5%) vs. Q2 2025
- New holders
- 125
- 323 more added
- Sold out
- 73
- 268 more reduced
10 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Parkside Financial Bank & Trust | 1,739 | $243.6K | 0.02% | +92+5.6% | Added |
| Mission Wealth Management, LP | 1,730 | $242.3K | 0.00% | −126−6.8% | Reduced |
| Investment House LLC | 1,730 | $242.3K | 0.01% | 00.0% | Unchanged |
| Waddell & Associates, LLC | 1,719 | $240.8K | 0.02% | +1,719 | New |
| DGS Capital Management, LLC | 1,708 | $239.3K | 0.04% | +1,708 | New |
| Fidelis Capital Partners, LLC | 1,703 | $238.6K | 0.02% | +1,703 | New |
| Sym Financial Corp | 1,695 | $237.4K | 0.03% | +1,695 | New |
| Transcend Wealth Collective, LLC | 1,679 | $235.2K | 0.02% | +1,679 | New |
| Trust Asset Management LLC | 1,675 | $234.6K | 0.02% | 00.0% | Unchanged |
| Kera Capital Partners, Inc. | 1,665 | $233.2K | 0.03% | +1,665 | New |
| Joel Isaacson & Co., LLC | 1,664 | $233.1K | 0.01% | +1,664 | New |
| Financiere des Professionnels - Fonds d,investissement inc. | 1,646 | $230.6K | 0.01% | +1,646 | New |
| Abacus Planning Group, Inc. | 1,641 | $229.9K | 0.03% | +1,641 | New |
| Walleye Capital LLC | 1,637 | $229.3K | 0.00% | −2,318−58.6% | Reduced |
| Hantz Financial Services, Inc. | 1,636 | $229.0K | 0.00% | +453+38.3% | Added |
| Optas, LLC | 1,633 | $228.7K | 0.04% | +39+2.4% | Added |
| Parcion Private Wealth LLC | 1,619 | $226.8K | 0.01% | +1,619 | New |
| Sumitomo Life Insurance Co | 1,617 | $226.5K | 0.01% | −39−2.4% | Reduced |
| Verdence Capital Advisors LLC | 1,493 | $224.6K | 0.01% | −134−8.2% | Reduced |
| Baker Avenue Asset Management, LP | 1,598 | $223.9K | 0.01% | +1,598 | New |
| Plancorp, LLC | 1,596 | $223.6K | 0.01% | −11−0.7% | Reduced |
| Resonant Capital Advisors, LLC | 1,575 | $220.6K | 0.01% | +1,575 | New |
| Concurrent Investment Advisors, LLC | 1,572 | $220.2K | 0.00% | +1,572 | New |
| Mason & Associates Inc | 1,563 | $218.9K | 0.04% | +1,563 | New |
| Poinciana Advisors Group, LLC | 1,554 | $217.7K | 0.18% | +1,554 | New |
| Capital Performance Advisors LLP | 1,545 | $216.4K | 0.04% | −234−13.2% | Reduced |
| Berkshire Asset Management LLC | 1,541 | $215.9K | 0.01% | +1,541 | New |
| Alpha Family Trust | 1,540 | $215.7K | 0.10% | +1,540 | New |
| State of Wyoming | 1,527 | $213.9K | 0.02% | −1,852−54.8% | Reduced |
| STF Management LP | 1,525 | $213.6K | 0.08% | +7+0.5% | Added |
| Modern Wealth Management, LLC | 1,507 | $211.1K | 0.00% | +1,507 | New |
| Clearstead Advisors, LLC | 1,502 | $210.4K | 0.00% | −181−10.8% | Reduced |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 1,465 | $205.2K | 0.00% | +1,465 | New |
| AE Wealth Management LLC | 1,462 | $204.8K | 0.00% | +1,462 | New |
| CX Institutional | 1,453 | $204.0K | 0.01% | +83+6.1% | Added |
| Cigna Investments Inc | 1,457 | $204.0K | 0.03% | +1,457 | New |
| Israel Discount Bank of New York | 1,453 | $203.5K | 0.60% | +1,453 | New |
| Prasad Wealth Partners, LLC | 1,452 | $203.5K | 0.06% | +1,452 | New |
| Umb Bank N A | 1,436 | $201.2K | 0.00% | +407+39.6% | Added |
| Johnson Investment Counsel Inc | 1,429 | $200.2K | 0.00% | +1,429 | New |
| Independent Financial Group, LLC | 1,428 | $200.0K | 0.00% | +1,428 | New |
| Board of the Pension Protection Fund | 1,400 | $196.1K | 0.19% | +1,400 | New |
| Cary Street Partners Financial LLC | 1,355 | $189.8K | 0.00% | +1,355 | New |
| Whittier Trust Co | 1,176 | $188.0K | 0.00% | 00.0% | Unchanged |
| Livforsakringsbolaget Skandia, Omsesidigt | 1,330 | $186.3K | 0.01% | −100−7.0% | Reduced |
| Cubist Systematic Strategies, LLC | 1,300 | $182.1K | 0.00% | −54,619−97.7% | Reduced |
| S-Bank Fund Management Ltd | 1,292 | $181.0K | 0.02% | −16−1.2% | Reduced |
| Ronald Blue Trust, Inc. | 1,202 | $168.4K | 0.00% | +95+8.6% | Added |
| CIBC Private Wealth Group, LLC | 1,189 | $166.5K | 0.00% | +89+8.1% | Added |
| Simplex Trading, LLC | 1,116 | $156.0K | 0.00% | −5,483−83.1% | Reduced |
| IFP Advisors, Inc | 1,096 | $153.5K | 0.00% | +11+1.0% | Added |
| Wealthspire Advisors, LLC | 1,067 | $149.5K | 0.00% | +1,067 | New |
| Farther Finance Advisors, LLC | 1,049 | $147.0K | 0.00% | +94+9.8% | Added |
| Trust Co of Vermont | 1,049 | $146.9K | 0.01% | 00.0% | Unchanged |
| Covestor Ltd | 1,025 | $144.0K | 0.08% | +166+19.3% | Added |
| Horizon Bancorp Inc | 1,027 | $144.0K | 0.07% | +391+61.5% | Added |
| Steward Partners Investment Advisory, LLC | 962 | $134.8K | 0.00% | −28−2.8% | Reduced |
| Deseret Mutual Benefit Administrators | 929 | $130.1K | 0.05% | −459−33.1% | Reduced |
| Mascoma Wealth Management LLC | 925 | $129.6K | 0.03% | 00.0% | Unchanged |
| Nexus Investment Management ULC | 920 | $128.9K | 0.02% | 00.0% | Unchanged |
| Acima Private Wealth, LLC | 916 | $128.3K | 0.04% | 00.0% | Unchanged |
| Mather Group, LLC. | 902 | $126.4K | 0.00% | +902 | New |
| Versant Capital Management, Inc | 896 | $125.5K | 0.02% | +66+8.0% | Added |
| CoreFirst Bank & Trust | 894 | $125.2K | 0.07% | 00.0% | Unchanged |
| Legacy Bridge, LLC | 880 | $123.3K | 0.05% | 00.0% | Unchanged |
| Manchester Capital Management LLC | 878 | $123.0K | 0.02% | +4+0.5% | Added |
| Bryn Mawr Trust Co | 867 | $121.4K | 0.00% | −1,068−55.2% | Reduced |
| Eastern Bank | 856 | $119.9K | 0.00% | 00.0% | Unchanged |
| Sava Infond d.o.o. | 825 | $115.6K | 0.02% | −825−50.0% | Reduced |
| Pin Oak Investment Advisors Inc | 820 | $114.9K | 0.08% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 734 | $113.3K | 0.00% | −82−10.0% | Reduced |
| BNP Paribas | 804 | $112.7K | 0.00% | 00.0% | Unchanged |
| Centennial Bank | 800 | $112.1K | 0.04% | 00.0% | Unchanged |
| Point72 (DIFC) Ltd | 772 | $108.1K | 0.01% | −15,529−95.3% | Reduced |
| Massmutual Trust Co FSB | 726 | $101.7K | 0.00% | +109+17.7% | Added |
| Principal Securities, Inc. | 711 | $99.6K | 0.00% | +7+1.0% | Added |
| City State Bank | 692 | $96.9K | 0.03% | 00.0% | Unchanged |
| MAI Capital Management | 690 | $96.7K | 0.00% | −86−11.1% | Reduced |
| Quantbot Technologies LP | 690 | $96.7K | 0.00% | −907−56.8% | Reduced |
| GPS Wealth Strategies Group, LLC | 645 | $90.4K | 0.01% | −50−7.2% | Reduced |
| Larson Financial Group LLC | 638 | $89.4K | 0.00% | +121+23.4% | Added |
| JNBA Financial Advisors | 626 | $87.7K | 0.01% | 00.0% | Unchanged |
| Emerald Mutual Fund Advisers Trust | 623 | $87.3K | 0.00% | +623 | New |
| Smartleaf Asset Management LLC | 628 | $87.0K | 0.01% | +426+210.9% | Added |
| TCTC Holdings, LLC | 600 | $84.0K | 0.00% | −300−33.3% | Reduced |
| Mma Asset Management LLC | 600 | $84.0K | 0.03% | +600 | New |
| Tidemark, LLC | 592 | $82.9K | 0.02% | 00.0% | Unchanged |
| Salem Investment Counselors Inc | 566 | $79.3K | 0.00% | 00.0% | Unchanged |
| Alpine Bank Wealth Management | 545 | $76.3K | 0.01% | 00.0% | Unchanged |
| Hanson & Doremus Investment Management | 525 | $74.0K | 0.01% | 00.0% | Unchanged |
| Cromwell Holdings LLC | 511 | $71.6K | 0.04% | 00.0% | Unchanged |
| Zions Bancorporation, National Association | 511 | $71.6K | 0.00% | +139+37.4% | Added |
| Curat Global, LLC | 503 | $70.5K | 0.07% | 00.0% | Unchanged |
| Capital Analysts, LLC | 501 | $70.0K | 0.00% | 00.0% | Unchanged |
| CVA Family Office, LLC | 464 | $65.0K | 0.01% | +71+18.1% | Added |
| Pflug Koory, LLC | 464 | $65.0K | 0.03% | +250+116.8% | Added |
| Rothschild Investment LLC | 457 | $64.0K | 0.00% | +233+104.0% | Added |
| Paradigm Asset Management Co LLC | 455 | $63.7K | 0.01% | 00.0% | Unchanged |
| Lavaca Capital LLC | 447 | $62.6K | 0.01% | 00.0% | Unchanged |
| Key Financial Inc | 406 | $62.6K | 0.01% | 00.0% | Unchanged |