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 |
|---|---|---|---|---|---|
| WealthCollab, LLC | 206 | $37.8K | 0.02% | 00.0% | Unchanged |
| Bogart Wealth, LLC | 215 | $39.4K | 0.00% | −294−57.8% | Reduced |
| Cassaday & Co Wealth Management LLC | 218 | $40.0K | 0.00% | +218 | New |
| Ancora Advisors, LLC | 224 | $41.1K | 0.00% | +100+80.6% | Added |
| Wall Street Financial Group, Inc. | 224 | $41.1K | 0.02% | +224 | New |
| Keating Financial Advisory Services, Inc. | 228 | $41.8K | 0.01% | +33+16.9% | Added |
| Capital Advisors, Ltd. LLC | 232 | $43.0K | 0.00% | 00.0% | Unchanged |
| GW&K Investment Management, LLC | 239 | $44.0K | 0.00% | 00.0% | Unchanged |
| SHP Wealth Management | 242 | $44.3K | 0.00% | +19+8.5% | Added |
| WFA of San Diego, LLC | 251 | $46.0K | 0.04% | −2−0.8% | Reduced |
| CoreCap Advisors, LLC | 254 | $46.6K | 0.00% | −3,022−92.2% | Reduced |
| Opal Wealth Advisors, LLC | 256 | $46.9K | 0.01% | +256 | New |
| Aventura Private Wealth, LLC | 260 | $47.7K | 0.02% | −13−4.8% | Reduced |
| Golden State Wealth Management, LLC | 260 | $47.7K | 0.01% | −5−1.9% | Reduced |
| Cary Street Partner Investment Advisory LLC | 284 | $52.1K | 0.01% | +37+15.0% | Added |
| Trust Co | 291 | $53.3K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 293 | $54.0K | 0.04% | −289−49.7% | Reduced |
| CoreFirst Bank & Trust | 295 | $54.1K | 0.03% | −295−50.0% | Reduced |
| Aster Capital Management (DIFC) Ltd | 398 | $54.5K | 0.02% | −10,089−96.2% | Reduced |
| Costello Asset Management, INC | 300 | $55.0K | 0.02% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 300 | $55.0K | 0.01% | 00.0% | Unchanged |
| True Wealth Design, LLC | 305 | $55.9K | 0.02% | +69+29.2% | Added |
| Vermillion Wealth Management, Inc. | 310 | $56.8K | 0.02% | +10+3.3% | Added |
| Harbour Investments, Inc. | 320 | $58.7K | 0.00% | +105+48.8% | Added |
| City State Bank | 322 | $59.0K | 0.02% | 00.0% | Unchanged |
| LRI Investments, LLC | 333 | $61.1K | 0.01% | +281+540.4% | Added |
| TopTier Wealth Management, LLC | 336 | $61.6K | 0.04% | +336 | New |
| Root Financial Partners, LLC | 341 | $62.5K | 0.00% | +156+84.3% | Added |
| Vanguard National Trust Co | 344 | $63.1K | 0.00% | +344 | New |
| Zions Bancorporation, National Association | 346 | $63.4K | 0.00% | −276−44.4% | Reduced |
| Prestige Wealth Management Group LLC | 346 | $63.4K | 0.01% | 00.0% | Unchanged |
| MCF Advisors LLC | 346 | $63.4K | 0.00% | +22+6.8% | Added |
| ORG Wealth Partners, LLC | 349 | $64.0K | 0.01% | 00.0% | Unchanged |
| Itau Unibanco Holding S.A. | 349 | $64.0K | 0.00% | +12+3.6% | Added |
| Wealth Enhancement Trust Services, Inc. | 380 | $69.7K | 0.01% | +380 | New |
| Caldwell Trust Co | 383 | $70.2K | 0.01% | 00.0% | Unchanged |
| Greykasell Wealth Strategies, Inc. | 385 | $70.6K | 0.03% | 00.0% | Unchanged |
| Onefund, LLC | 403 | $74.1K | 0.05% | −8−1.9% | Reduced |
| Key Financial Inc | 406 | $74.4K | 0.01% | 00.0% | Unchanged |
| Richardson Financial Services Inc. | 437 | $80.1K | 0.05% | 00.0% | Unchanged |
| Lavaca Capital LLC | 447 | $81.9K | 0.02% | 00.0% | Unchanged |
| Paradigm Asset Management Co LLC | 455 | $83.4K | 0.02% | 00.0% | Unchanged |
| Pflug Koory, LLC | 464 | $85.1K | 0.04% | 00.0% | Unchanged |
| Encore Global Management, LP | 500 | $91.7K | 0.06% | +500 | New |
| Capital Analysts, LLC | 501 | $92.0K | 0.00% | 00.0% | Unchanged |
| Curat Global, LLC | 503 | $92.2K | 0.09% | 00.0% | Unchanged |
| Cromwell Holdings LLC | 515 | $94.4K | 0.05% | +4+0.8% | Added |
| Hanson & Doremus Investment Management | 525 | $96.0K | 0.01% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 515 | $98.0K | 0.00% | +260+102.0% | Added |
| Ronald Blue Trust, Inc. | 560 | $102.7K | 0.00% | −280−33.3% | Reduced |
| Salem Investment Counselors Inc | 566 | $103.8K | 0.00% | +566 | New |
| CVA Family Office, LLC | 581 | $106.5K | 0.01% | +117+25.2% | Added |
| Tidemark, LLC | 593 | $108.7K | 0.03% | +1+0.2% | Added |
| Wilkerson Advisory Group LLC | 593 | $108.7K | 0.04% | +334+129.0% | Added |
| JNBA Financial Advisors | 596 | $109.3K | 0.01% | 00.0% | Unchanged |
| ASR Vermogensbeheer N.V. | 600 | $110.0K | 0.00% | +600 | New |
| TIAA Wealth Investment Management LLC | 629 | $115.3K | 0.00% | +629 | New |
| Whittier Trust Co | 699 | $120.5K | 0.00% | −67−8.7% | Reduced |
| TD Waterhouse Canada Inc. | 691 | $126.7K | 0.00% | +63+10.0% | Added |
| BNP Paribas | 700 | $128.3K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 750 | $137.5K | 0.00% | −10−1.3% | Reduced |
| Twin Tree Management, LP | 759 | $139.1K | 0.03% | −11,511−93.8% | Reduced |
| Eastern Bank | 796 | $145.9K | 0.00% | −60−7.0% | Reduced |
| Centennial Bank | 800 | $146.7K | 0.05% | 00.0% | Unchanged |
| Pin Oak Investment Advisors Inc | 820 | $150.0K | 0.11% | 00.0% | Unchanged |
| Sava Infond d.o.o. | 825 | $151.2K | 0.02% | 00.0% | Unchanged |
| Bryn Mawr Trust Co | 867 | $158.9K | 0.00% | 00.0% | Unchanged |
| Legacy Bridge, LLC | 880 | $161.3K | 0.06% | −30−3.3% | Reduced |
| Larson Financial Group LLC | 881 | $161.5K | 0.01% | +206+30.5% | Added |
| Steward Partners Investment Advisory, LLC | 892 | $163.5K | 0.00% | −53−5.6% | Reduced |
| Manchester Capital Management LLC | 901 | $165.2K | 0.02% | −3−0.3% | Reduced |
| Rothschild Investment LLC | 909 | $166.6K | 0.01% | +396+77.2% | Added |
| Acima Private Wealth, LLC | 916 | $167.9K | 0.05% | 00.0% | Unchanged |
| Nexus Investment Management ULC | 920 | $168.7K | 0.02% | 00.0% | Unchanged |
| Mascoma Wealth Management LLC | 927 | $169.9K | 0.04% | +2+0.2% | Added |
| Deseret Mutual Benefit Administrators | 943 | $172.9K | 0.06% | +392+71.1% | Added |
| Horizon Bancorp Inc | 1,017 | $186.0K | 0.09% | +35+3.6% | Added |
| Pinnacle Wealth Planning Services, Inc. | 1,030 | $188.8K | 0.02% | +10+1.0% | Added |
| Meeder Asset Management Inc | 1,071 | $196.3K | 0.01% | +855+395.8% | Added |
| Quotient Wealth Partners, LLC | 1,097 | $201.1K | 0.01% | +1,097 | New |
| TRB Wealth Management, LLC | 1,097 | $201.1K | 0.03% | +1,097 | New |
| Twinbeech Capital LP | 1,100 | $201.7K | 0.02% | −1,734−61.2% | Reduced |
| Lighthouse Financial LLC | 1,101 | $201.8K | 0.12% | +1,101 | New |
| Resources Investment Advisors, LLC. | 1,101 | $201.9K | 0.00% | −291−20.9% | Reduced |
| Wedbush Securities Inc | 1,108 | $203.0K | 0.01% | +1,108 | New |
| Bell Bank | 1,109 | $203.3K | 0.01% | +1,109 | New |
| New Age Alpha Advisors, LLC | 1,119 | $205.1K | 0.01% | +1,119 | New |
| Advyzon Investment Management, LLC | 1,129 | $207.0K | 0.02% | −83−6.8% | Reduced |
| Probity Advisors, Inc. | 1,131 | $207.3K | 0.03% | +1,131 | New |
| Nwam LLC | 1,141 | $209.2K | 0.01% | +1,141 | New |
| Sapient Capital LLC | 1,143 | $209.5K | 0.00% | +1,143 | New |
| Poehling Capital Management, LLC | 1,144 | $209.7K | 0.04% | +1,144 | New |
| McMillan Office, Inc. | 1,150 | $210.8K | 0.03% | 00.0% | Unchanged |
| Sym Financial Corp | 1,150 | $210.8K | 0.02% | +1,150 | New |
| IFP Advisors, Inc | 1,151 | $211.0K | 0.00% | −55−4.6% | Reduced |
| Tradewinds, LLC. | 1,129 | $211.2K | 0.07% | +1,129 | New |
| Northwest Wealth Management, LLC | 1,152 | $211.2K | 0.03% | +1,152 | New |
| Investment House LLC | 1,155 | $211.7K | 0.01% | −575−33.2% | Reduced |
| Kingsview Wealth Management, LLC | 1,156 | $211.9K | 0.00% | +1,156 | New |
| Rehmann Capital Advisory Group | 1,165 | $213.6K | 0.01% | +1,165 | New |