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; 1,046 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Biogen Inc. as of Dec 31, 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
- 1,002
- +109 vs. Q3 2025
- Shares held
- 139.7M
- +8.71M (+6.6%) vs. Q3 2025
- Total value
- $24.6B
- +$6.26B (+34.1%) vs. Q3 2025
- New holders
- 191
- 323 more added
- Sold out
- 82
- 295 more reduced
16 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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 | 1,046 | $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, Q4 2025
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Capital Advisors, Ltd. LLC | 232 | $41.0K | 0.01% | 00.0% | Unchanged |
| True Wealth Design, LLC | 236 | $41.5K | 0.01% | +3+1.3% | Added |
| GW&K Investment Management, LLC | 239 | $42.0K | 0.00% | 00.0% | Unchanged |
| Cary Street Partner Investment Advisory LLC | 247 | $43.5K | 0.01% | +138+126.6% | Added |
| Twin Lakes Capital Management, LLC | 250 | $44.0K | 0.02% | 00.0% | Unchanged |
| WFA of San Diego, LLC | 253 | $44.5K | 0.03% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 255 | $44.9K | 0.00% | −21,126−98.8% | Reduced |
| Wilkerson Advisory Group LLC | 259 | $45.6K | 0.02% | +259 | New |
| Golden State Wealth Management, LLC | 265 | $46.6K | 0.00% | 00.0% | Unchanged |
| Aventura Private Wealth, LLC | 273 | $48.0K | 0.02% | −94−25.6% | Reduced |
| Trust Co | 291 | $51.2K | 0.00% | +128+78.5% | Added |
| Board of the Pension Protection Fund | 300 | $52.8K | 0.05% | −1,100−78.6% | Reduced |
| Costello Asset Management, INC | 300 | $52.8K | 0.02% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 300 | $52.8K | 0.01% | 00.0% | Unchanged |
| Vermillion Wealth Management, Inc. | 300 | $52.8K | 0.02% | +300 | New |
| Sentry Investment Management LLC | 305 | $54.0K | 0.04% | 00.0% | Unchanged |
| City State Bank | 322 | $56.7K | 0.02% | −370−53.5% | Reduced |
| MCF Advisors LLC | 324 | $57.0K | 0.00% | 00.0% | Unchanged |
| Elyxium Wealth, LLC | 330 | $58.1K | 0.02% | +330 | New |
| Itau Unibanco Holding S.A. | 337 | $59.3K | 0.00% | +66+24.4% | Added |
| Prestige Wealth Management Group LLC | 346 | $60.9K | 0.01% | +282+440.6% | Added |
| ORG Wealth Partners, LLC | 349 | $61.4K | 0.01% | 00.0% | Unchanged |
| Armstrong Advisory Group, Inc | 356 | $62.7K | 0.00% | 00.0% | Unchanged |
| Caldwell Trust Co | 383 | $67.4K | 0.01% | −18−4.5% | Reduced |
| Greykasell Wealth Strategies, Inc. | 385 | $67.8K | 0.03% | 00.0% | Unchanged |
| Trust Co of Vermont | 389 | $68.5K | 0.00% | −660−62.9% | Reduced |
| Key Financial Inc | 406 | $71.5K | 0.01% | 00.0% | Unchanged |
| Onefund, LLC | 411 | $72.3K | 0.04% | +27+7.0% | Added |
| Richardson Financial Services Inc. | 437 | $76.9K | 0.05% | 00.0% | Unchanged |
| Lavaca Capital LLC | 447 | $78.7K | 0.01% | 00.0% | Unchanged |
| Paradigm Asset Management Co LLC | 455 | $80.1K | 0.02% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 457 | $80.4K | 0.00% | +43+10.4% | Added |
| Pflug Koory, LLC | 464 | $81.7K | 0.04% | 00.0% | Unchanged |
| CVA Family Office, LLC | 464 | $81.7K | 0.01% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 499 | $87.8K | 0.00% | +337+208.0% | Added |
| Capital Analysts, LLC | 501 | $88.0K | 0.00% | 00.0% | Unchanged |
| Curat Global, LLC | 503 | $88.5K | 0.10% | 00.0% | Unchanged |
| Bogart Wealth, LLC | 509 | $89.6K | 0.00% | +196+62.6% | Added |
| Cromwell Holdings LLC | 511 | $89.9K | 0.05% | 00.0% | Unchanged |
| Rothschild Investment LLC | 513 | $90.2K | 0.00% | +56+12.3% | Added |
| Hanson & Doremus Investment Management | 525 | $92.0K | 0.01% | 00.0% | Unchanged |
| Deseret Mutual Benefit Administrators | 551 | $97.0K | 0.04% | −378−40.7% | Reduced |
| Covestor Ltd | 582 | $103.0K | 0.05% | −443−43.2% | Reduced |
| CoreFirst Bank & Trust | 590 | $103.8K | 0.06% | −304−34.0% | Reduced |
| Tidemark, LLC | 592 | $104.2K | 0.03% | 00.0% | Unchanged |
| JNBA Financial Advisors | 596 | $104.9K | 0.01% | −30−4.8% | Reduced |
| TCTC Holdings, LLC | 600 | $105.6K | 0.00% | 00.0% | Unchanged |
| Zions Bancorporation, National Association | 622 | $109.5K | 0.01% | +111+21.7% | Added |
| TD Waterhouse Canada Inc. | 628 | $110.5K | 0.00% | −106−14.4% | Reduced |
| Larson Financial Group LLC | 675 | $118.8K | 0.00% | +37+5.8% | Added |
| BNP Paribas | 700 | $123.2K | 0.00% | −104−12.9% | Reduced |
| Jessup Wealth Management, Inc | 727 | $127.9K | 0.04% | +727 | New |
| Massmutual Trust Co FSB | 760 | $133.8K | 0.00% | +34+4.7% | Added |
| Whittier Trust Co | 766 | $139.9K | 0.00% | −410−34.9% | Reduced |
| Centennial Bank | 800 | $140.8K | 0.06% | 00.0% | Unchanged |
| STF Management LP | 804 | $141.5K | 0.13% | −721−47.3% | Reduced |
| Sava Infond d.o.o. | 825 | $145.2K | 0.02% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 840 | $147.8K | 0.00% | −362−30.1% | Reduced |
| Eastern Bank | 856 | $150.6K | 0.00% | 00.0% | Unchanged |
| Bryn Mawr Trust Co | 867 | $152.6K | 0.00% | 00.0% | Unchanged |
| Bayforest Capital Ltd | 887 | $156.1K | 0.12% | +458+106.8% | Added |
| Manchester Capital Management LLC | 904 | $159.1K | 0.02% | +26+3.0% | Added |
| Legacy Bridge, LLC | 910 | $160.2K | 0.06% | +30+3.4% | Added |
| Acima Private Wealth, LLC | 916 | $161.2K | 0.05% | 00.0% | Unchanged |
| Nexus Investment Management ULC | 920 | $161.9K | 0.02% | 00.0% | Unchanged |
| Mascoma Wealth Management LLC | 925 | $162.8K | 0.03% | 00.0% | Unchanged |
| Pin Oak Investment Advisors Inc | 820 | $165.0K | 0.12% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 945 | $166.3K | 0.00% | −17−1.8% | Reduced |
| Horizon Bancorp Inc | 982 | $173.0K | 0.08% | −45−4.4% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 1,020 | $179.5K | 0.02% | +1,020 | New |
| Cladis Investment Advisory, LLC | 1,040 | $183.0K | 0.10% | +1,040 | New |
| Versant Capital Management, Inc | 1,065 | $187.4K | 0.02% | +169+18.9% | Added |
| Boltwood Capital Management | 1,141 | $200.8K | 0.05% | +1,141 | New |
| GTS Securities LLC | 1,145 | $201.5K | 0.01% | −2,195−65.7% | Reduced |
| McMillan Office, Inc. | 1,150 | $202.4K | 0.02% | +1,150 | New |
| Howard Capital Management Inc. | 1,161 | $204.3K | 0.00% | +1,161 | New |
| Bridgewater Advisors Inc. | 1,212 | $204.4K | 0.01% | +1,212 | New |
| Basepoint Wealth LLC | 1,164 | $204.9K | 0.12% | +1,164 | New |
| Pure Financial Advisors, Inc. | 1,173 | $206.4K | 0.00% | +1,173 | New |
| Valeo Financial Advisors, LLC | 1,197 | $210.7K | 0.00% | +1,197 | New |
| IFP Advisors, Inc | 1,206 | $212.2K | 0.00% | +110+10.0% | Added |
| Analyst IMS Investment Management Services Ltd. | 1,208 | $213.0K | 0.01% | +1,208 | New |
| Advyzon Investment Management, LLC | 1,212 | $213.3K | 0.02% | +1,212 | New |
| Regions Financial Corp | 1,237 | $217.7K | 0.00% | +1,237 | New |
| Patton Fund Management, Inc. | 1,244 | $218.9K | 0.03% | −602−32.6% | Reduced |
| MMBG Investment Advisors Co. | 1,248 | $219.6K | 0.02% | +1,248 | New |
| SageView Advisory Group, LLC | 1,253 | $220.5K | 0.01% | +1,253 | New |
| Western Wealth Management, LLC | 1,254 | $220.7K | 0.01% | +1,254 | New |
| Sagespring Wealth Partners, LLC | 1,254 | $220.7K | 0.00% | +1,254 | New |
| Miracle Mile Advisors, LLC | 1,268 | $223.1K | 0.00% | +1,268 | New |
| Johnson Investment Counsel Inc | 1,269 | $223.3K | 0.00% | −160−11.2% | Reduced |
| Mather Group, LLC. | 1,282 | $225.5K | 0.00% | +380+42.1% | Added |
| Riversedge Advisors, LLC | 1,288 | $226.7K | 0.04% | +1,288 | New |
| PDS Planning, Inc | 1,291 | $227.2K | 0.02% | +1,291 | New |
| Keel Point, LLC | 1,292 | $227.4K | 0.01% | +1,292 | New |
| State of Wyoming | 1,293 | $227.6K | 0.02% | −234−15.3% | Reduced |
| Hansen & Associates Financial Group, Inc. | 1,226 | $231.7K | 0.13% | +1,226 | New |
| Livforsakringsbolaget Skandia, Omsesidigt | 1,330 | $234.1K | 0.01% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 1,336 | $235.1K | 0.01% | −4,890−78.5% | Reduced |
| Jackson Thornton Asset Management, LLC | 1,297 | $236.8K | 0.02% | +1,297 | New |