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 |
|---|---|---|---|---|---|
| Quest Partners LLC | 375 | $52.5K | 0.00% | −10,789−96.6% | Reduced |
| Caitong International Asset Management Co., Ltd | 382 | $53.5K | 0.04% | +382 | New |
| Onefund, LLC | 384 | $53.8K | 0.03% | +11+2.9% | Added |
| Greykasell Wealth Strategies, Inc. | 385 | $53.9K | 0.02% | −120−23.8% | Reduced |
| Caldwell Trust Co | 401 | $56.2K | 0.01% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 414 | $58.0K | 0.00% | +76+22.5% | Added |
| Bayforest Capital Ltd | 429 | $60.1K | 0.03% | +429 | New |
| Richardson Financial Services Inc. | 437 | $61.2K | 0.04% | 00.0% | Unchanged |
| Key Financial Inc | 406 | $62.6K | 0.01% | 00.0% | Unchanged |
| Lavaca Capital LLC | 447 | $62.6K | 0.01% | 00.0% | Unchanged |
| Paradigm Asset Management Co LLC | 455 | $63.7K | 0.01% | 00.0% | Unchanged |
| Rothschild Investment LLC | 457 | $64.0K | 0.00% | +233+104.0% | Added |
| 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 |
| Capital Analysts, LLC | 501 | $70.0K | 0.00% | 00.0% | Unchanged |
| Curat Global, LLC | 503 | $70.5K | 0.07% | 00.0% | Unchanged |
| Zions Bancorporation, National Association | 511 | $71.6K | 0.00% | +139+37.4% | Added |
| Cromwell Holdings LLC | 511 | $71.6K | 0.04% | 00.0% | Unchanged |
| Hanson & Doremus Investment Management | 525 | $74.0K | 0.01% | 00.0% | Unchanged |
| Alpine Bank Wealth Management | 545 | $76.3K | 0.01% | 00.0% | Unchanged |
| Salem Investment Counselors Inc | 566 | $79.3K | 0.00% | 00.0% | Unchanged |
| Tidemark, LLC | 592 | $82.9K | 0.02% | 00.0% | Unchanged |
| TCTC Holdings, LLC | 600 | $84.0K | 0.00% | −300−33.3% | Reduced |
| Mma Asset Management LLC | 600 | $84.0K | 0.03% | +600 | New |
| Smartleaf Asset Management LLC | 628 | $87.0K | 0.01% | +426+210.9% | Added |
| Emerald Mutual Fund Advisers Trust | 623 | $87.3K | 0.00% | +623 | New |
| JNBA Financial Advisors | 626 | $87.7K | 0.01% | 00.0% | Unchanged |
| Larson Financial Group LLC | 638 | $89.4K | 0.00% | +121+23.4% | Added |
| GPS Wealth Strategies Group, LLC | 645 | $90.4K | 0.01% | −50−7.2% | Reduced |
| Quantbot Technologies LP | 690 | $96.7K | 0.00% | −907−56.8% | Reduced |
| MAI Capital Management | 690 | $96.7K | 0.00% | −86−11.1% | Reduced |
| City State Bank | 692 | $96.9K | 0.03% | 00.0% | Unchanged |
| Principal Securities, Inc. | 711 | $99.6K | 0.00% | +7+1.0% | Added |
| Massmutual Trust Co FSB | 726 | $101.7K | 0.00% | +109+17.7% | Added |
| Point72 (DIFC) Ltd | 772 | $108.1K | 0.01% | −15,529−95.3% | Reduced |
| Centennial Bank | 800 | $112.1K | 0.04% | 00.0% | Unchanged |
| BNP Paribas | 804 | $112.7K | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 734 | $113.3K | 0.00% | −82−10.0% | Reduced |
| Pin Oak Investment Advisors Inc | 820 | $114.9K | 0.08% | 00.0% | Unchanged |
| Sava Infond d.o.o. | 825 | $115.6K | 0.02% | −825−50.0% | Reduced |
| Eastern Bank | 856 | $119.9K | 0.00% | 00.0% | Unchanged |
| Bryn Mawr Trust Co | 867 | $121.4K | 0.00% | −1,068−55.2% | Reduced |
| Manchester Capital Management LLC | 878 | $123.0K | 0.02% | +4+0.5% | Added |
| Legacy Bridge, LLC | 880 | $123.3K | 0.05% | 00.0% | Unchanged |
| CoreFirst Bank & Trust | 894 | $125.2K | 0.07% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 896 | $125.5K | 0.02% | +66+8.0% | Added |
| Mather Group, LLC. | 902 | $126.4K | 0.00% | +902 | New |
| Acima Private Wealth, LLC | 916 | $128.3K | 0.04% | 00.0% | Unchanged |
| Nexus Investment Management ULC | 920 | $128.9K | 0.02% | 00.0% | Unchanged |
| Mascoma Wealth Management LLC | 925 | $129.6K | 0.03% | 00.0% | Unchanged |
| Deseret Mutual Benefit Administrators | 929 | $130.1K | 0.05% | −459−33.1% | Reduced |
| Steward Partners Investment Advisory, LLC | 962 | $134.8K | 0.00% | −28−2.8% | Reduced |
| 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 |
| Trust Co of Vermont | 1,049 | $146.9K | 0.01% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 1,049 | $147.0K | 0.00% | +94+9.8% | Added |
| Wealthspire Advisors, LLC | 1,067 | $149.5K | 0.00% | +1,067 | New |
| IFP Advisors, Inc | 1,096 | $153.5K | 0.00% | +11+1.0% | Added |
| Simplex Trading, LLC | 1,116 | $156.0K | 0.00% | −5,483−83.1% | Reduced |
| CIBC Private Wealth Group, LLC | 1,189 | $166.5K | 0.00% | +89+8.1% | Added |
| Ronald Blue Trust, Inc. | 1,202 | $168.4K | 0.00% | +95+8.6% | Added |
| S-Bank Fund Management Ltd | 1,292 | $181.0K | 0.02% | −16−1.2% | Reduced |
| Cubist Systematic Strategies, LLC | 1,300 | $182.1K | 0.00% | −54,619−97.7% | Reduced |
| Livforsakringsbolaget Skandia, Omsesidigt | 1,330 | $186.3K | 0.01% | −100−7.0% | Reduced |
| Whittier Trust Co | 1,176 | $188.0K | 0.00% | 00.0% | Unchanged |
| Cary Street Partners Financial LLC | 1,355 | $189.8K | 0.00% | +1,355 | New |
| Board of the Pension Protection Fund | 1,400 | $196.1K | 0.19% | +1,400 | New |
| Independent Financial Group, LLC | 1,428 | $200.0K | 0.00% | +1,428 | New |
| Johnson Investment Counsel Inc | 1,429 | $200.2K | 0.00% | +1,429 | New |
| Umb Bank N A | 1,436 | $201.2K | 0.00% | +407+39.6% | Added |
| Prasad Wealth Partners, LLC | 1,452 | $203.5K | 0.06% | +1,452 | New |
| Israel Discount Bank of New York | 1,453 | $203.5K | 0.60% | +1,453 | 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 |
| AE Wealth Management LLC | 1,462 | $204.8K | 0.00% | +1,462 | New |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 1,465 | $205.2K | 0.00% | +1,465 | New |
| Clearstead Advisors, LLC | 1,502 | $210.4K | 0.00% | −181−10.8% | Reduced |
| Modern Wealth Management, LLC | 1,507 | $211.1K | 0.00% | +1,507 | New |
| STF Management LP | 1,525 | $213.6K | 0.08% | +7+0.5% | Added |
| State of Wyoming | 1,527 | $213.9K | 0.02% | −1,852−54.8% | Reduced |
| Alpha Family Trust | 1,540 | $215.7K | 0.10% | +1,540 | New |
| Berkshire Asset Management LLC | 1,541 | $215.9K | 0.01% | +1,541 | New |
| Capital Performance Advisors LLP | 1,545 | $216.4K | 0.04% | −234−13.2% | Reduced |
| Poinciana Advisors Group, LLC | 1,554 | $217.7K | 0.18% | +1,554 | New |
| Mason & Associates Inc | 1,563 | $218.9K | 0.04% | +1,563 | New |
| Concurrent Investment Advisors, LLC | 1,572 | $220.2K | 0.00% | +1,572 | New |
| Resonant Capital Advisors, LLC | 1,575 | $220.6K | 0.01% | +1,575 | New |
| Plancorp, LLC | 1,596 | $223.6K | 0.01% | −11−0.7% | Reduced |
| Baker Avenue Asset Management, LP | 1,598 | $223.9K | 0.01% | +1,598 | New |
| Verdence Capital Advisors LLC | 1,493 | $224.6K | 0.01% | −134−8.2% | Reduced |
| Sumitomo Life Insurance Co | 1,617 | $226.5K | 0.01% | −39−2.4% | Reduced |
| Parcion Private Wealth LLC | 1,619 | $226.8K | 0.01% | +1,619 | New |
| Optas, LLC | 1,633 | $228.7K | 0.04% | +39+2.4% | Added |
| Hantz Financial Services, Inc. | 1,636 | $229.0K | 0.00% | +453+38.3% | Added |
| Walleye Capital LLC | 1,637 | $229.3K | 0.00% | −2,318−58.6% | Reduced |
| Abacus Planning Group, Inc. | 1,641 | $229.9K | 0.03% | +1,641 | New |
| Financiere des Professionnels - Fonds d,investissement inc. | 1,646 | $230.6K | 0.01% | +1,646 | New |
| Joel Isaacson & Co., LLC | 1,664 | $233.1K | 0.01% | +1,664 | New |
| Kera Capital Partners, Inc. | 1,665 | $233.2K | 0.03% | +1,665 | New |
| Trust Asset Management LLC | 1,675 | $234.6K | 0.02% | 00.0% | Unchanged |