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, 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 | 1,047 | $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, 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 |
|---|---|---|---|---|---|
| Siemens Fonds Invest GmbH | 3,521 | $621.1K | 0.03% | 00.0% | Unchanged |
| Avestar Capital, LLC | 3,535 | $622.2K | 0.04% | +913+34.8% | Added |
| Chesapeake Capital Corp | 3,544 | $623.7K | 0.52% | +3,544 | New |
| Bellevue Group AG | 3,565 | $627.4K | 0.01% | −648−15.4% | Reduced |
| Savant Capital, LLC | 3,568 | $627.8K | 0.00% | +154+4.5% | Added |
| AlphaCentric Advisors LLC | 3,627 | $638.3K | 0.64% | +3,627 | New |
| Ironwood Financial, llc | 3,535 | $656.2K | 0.11% | −8−0.2% | Reduced |
| QRG Capital Management, Inc. | 3,795 | $667.9K | 0.01% | +224+6.3% | Added |
| Tower Research Capital LLC (TRC) | 3,831 | $674.2K | 0.02% | +356+10.2% | Added |
| Kentucky Retirement Systems Insurance Trust Fund | 3,844 | $676.5K | 0.04% | 00.0% | Unchanged |
| Wahed Invest LLC | 3,846 | $676.9K | 0.09% | −150−3.8% | Reduced |
| Burns Matteson Capital Management, LLC | 3,919 | $689.7K | 0.28% | +3,919 | New |
| Virtus Investment Advisers, Inc. | 3,923 | $690.4K | 0.19% | +564+16.8% | Added |
| Lifeworks Advisors, LLC | 3,933 | $692.2K | 0.09% | −748−16.0% | Reduced |
| Farmers & Merchants Investments Inc | 3,941 | $693.6K | 0.02% | −10.0% | Reduced |
| Securian Asset Management, Inc | 3,945 | $694.3K | 0.03% | −3,005−43.2% | Reduced |
| Econ Financial Services Corp | 3,946 | $694.5K | 0.35% | +3,946 | New |
| MUFG Securities Americas Inc. | 3,952 | $695.5K | 0.04% | −2−0.1% | Reduced |
| Texas Yale Capital Corp. | 3,987 | $701.7K | 0.02% | 00.0% | Unchanged |
| Cohen Klingenstein LLC | 4,000 | $704.0K | 0.02% | 00.0% | Unchanged |
| Storebrand Asset Management AS | 4,048 | $712.4K | 0.00% | +1,713+73.4% | Added |
| V-Square Quantitative Management LLC | 4,120 | $725.1K | 0.08% | +4,120 | New |
| David Loasby | 3,915 | $726.7K | 0.05% | +1,112+39.7% | Added |
| Pinnacle Associates Ltd | 4,155 | $731.3K | 0.01% | +7+0.2% | Added |
| Vident Advisory, LLC | 4,205 | $740.0K | 0.01% | −792−15.8% | Reduced |
| Savvy Advisors, Inc. | 4,249 | $747.8K | 0.02% | +811+23.6% | Added |
| Parallel Advisors, LLC | 4,302 | $757.2K | 0.01% | +79+1.9% | Added |
| Lineweaver Wealth Advisors, LLC | 4,338 | $763.4K | 0.10% | +2,129+96.4% | Added |
| Signaturefd, LLC | 4,370 | $769.0K | 0.01% | +28+0.6% | Added |
| Concurrent Investment Advisors, LLC | 4,376 | $770.1K | 0.01% | +2,804+178.4% | Added |
| Ci Investments Inc. | 4,397 | $773.8K | 0.00% | −285−6.1% | Reduced |
| First County Bank | 4,412 | $776.5K | 0.41% | −65−1.5% | Reduced |
| Davis Investment Partners, LLC | 4,374 | $777.8K | 0.27% | +71+1.7% | Added |
| Jones Kertz & Associates, Inc. | 4,491 | $790.4K | 0.41% | +4,491 | New |
| Kestra Advisory Services, LLC | 4,509 | $793.5K | 0.00% | +2,387+112.5% | Added |
| Arkadios Wealth Advisors | 4,575 | $805.2K | 0.02% | +1,679+58.0% | Added |
| Hills Bank & Trust Co | 4,619 | $812.9K | 0.05% | −1,126−19.6% | Reduced |
| Meeder Advisory Services, Inc. | 4,664 | $820.8K | 0.04% | +290+6.6% | Added |
| HB Wealth Management, LLC | 4,670 | $821.9K | 0.01% | +581+14.2% | Added |
| Northwestern Mutual Investment Management Company, LLC | 4,687 | $824.9K | 0.01% | +14+0.3% | Added |
| Wiley Bros.-Aintree Capital, LLC | 4,285 | $833.0K | 0.00% | +755+21.4% | Added |
| Coldstream Capital Management Inc | 4,782 | $841.6K | 0.01% | +302+6.7% | Added |
| Kathmere Capital Management, LLC | 4,791 | $843.2K | 0.06% | +2,318+93.7% | Added |
| Summitry LLC | 4,794 | $843.7K | 0.04% | −1,249−20.7% | Reduced |
| Abn Amro Investment Solutions | 4,826 | $849.3K | 0.01% | +4,826 | New |
| Inceptionr LLC | 4,876 | $858.1K | 0.24% | −426−8.0% | Reduced |
| Lido Advisors, LLC | 5,991 | $865.4K | 0.00% | −308−4.9% | Reduced |
| Plato Investment Management Ltd | 4,939 | $873.5K | 0.06% | 00.0% | Unchanged |
| Brown Brothers Harriman & Co | 4,984 | $877.1K | 0.00% | +288+6.1% | Added |
| Rockefeller Capital Management L.P. | 5,007 | $881.2K | 0.00% | −168−3.2% | Reduced |
| Polymer Capital Management (US) LLC | 5,022 | $883.8K | 0.11% | +2,348+87.8% | Added |
| Laurion Capital Management LP | 5,033 | $885.8K | 0.06% | +5,033 | New |
| Empirical Finance, LLC | 5,076 | $893.3K | 0.04% | −210−4.0% | Reduced |
| Unison Advisors LLC | 5,078 | $893.7K | 0.08% | 00.0% | Unchanged |
| Spears Abacus Advisors LLC | 5,079 | $893.9K | 0.02% | 00.0% | Unchanged |
| Elevated Private Wealth, LLC | 5,163 | $908.6K | 0.95% | +5,163 | New |
| Ellevest, Inc. | 5,167 | $909.3K | 0.13% | +272+5.6% | Added |
| Sanctuary Advisors, LLC | 5,172 | $910.2K | 0.00% | +1,375+36.2% | Added |
| Frank, Rimerman Advisors LLC | 5,182 | $912.0K | 0.06% | +10.0% | Added |
| Annis Gardner Whiting Capital Advisors, LLC | 5,190 | $913.4K | 0.17% | +12+0.2% | Added |
| Sigma Planning Corp | 5,246 | $923.2K | 0.03% | +5,246 | New |
| Wealthcare Advisory Partners LLC | 5,302 | $933.1K | 0.02% | +5,302 | New |
| Guardian Investment Management | 5,400 | $950.3K | 0.76% | 00.0% | Unchanged |
| Summit Trail Advisors, LLC | 5,401 | $950.5K | 0.02% | −488−8.3% | Reduced |
| Vise Technologies, Inc. | 5,415 | $953.0K | 0.02% | +2,616+93.5% | Added |
| Two Sigma Securities, LLC | 5,430 | $955.6K | 0.13% | +5,430 | New |
| Tocqueville Asset Management L.P. | 5,469 | $962.5K | 0.01% | −1,082−16.5% | Reduced |
| CSM Advisors, LLC | 5,481 | $964.0K | 0.03% | −2,490−31.2% | Reduced |
| GAMMA Investing LLC | 5,516 | $970.8K | 0.05% | +1,173+27.0% | Added |
| Intech Investment Management LLC | 5,542 | $975.3K | 0.01% | +1,269+29.7% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 5,571 | $980.0K | 0.01% | −117−2.1% | Reduced |
| Tokio Marine Asset Management Co Ltd | 5,569 | $980.1K | 0.03% | 00.0% | Unchanged |
| North Star Investment Management Corp. | 5,642 | $992.9K | 0.06% | +20+0.4% | Added |
| Essential Partners LLC | 5,714 | $1.01M | 0.31% | +155+2.8% | Added |
| E. Ohman J:or Asset Management AB | 5,719 | $1.01M | 0.02% | −680−10.6% | Reduced |
| Skopos Labs, Inc. | 5,702 | $1.01M | 0.05% | +1,446+34.0% | Added |
| Premier Path Wealth Partners, LLC | 5,730 | $1.01M | 0.13% | −3,313−36.6% | Reduced |
| Gifford Fong Associates | 5,750 | $1.01M | 0.20% | 00.0% | Unchanged |
| Jump Financial, LLC | 5,779 | $1.02M | 0.01% | −573−9.0% | Reduced |
| Lighthouse Investment Partners, LLC | 5,788 | $1.02M | 0.03% | −22,212−79.3% | Reduced |
| Independent Financial Group, LLC | 5,814 | $1.02M | 0.02% | +4,386+307.1% | Added |
| Forum Financial Management, LP | 5,887 | $1.04M | 0.01% | +3,039+106.7% | Added |
| Sagewood Asset Management LP | 5,899 | $1.04M | 0.37% | +5,899 | New |
| Independent Advisor Alliance | 5,987 | $1.05M | 0.03% | +3,816+175.8% | Added |
| Knott David M Jr | 6,000 | $1.06M | 0.49% | +4,000+200.0% | Added |
| MUFG Securities EMEA plc | 6,017 | $1.06M | 0.01% | +3,211+114.4% | Added |
| Dai-Ichi Life Insurance Company, Ltd | 6,019 | $1.06M | 0.03% | 00.0% | Unchanged |
| Emerald Advisers, LLC | 6,027 | $1.06M | 0.03% | −220−3.5% | Reduced |
| Ascent Group, LLC | 6,034 | $1.06M | 0.04% | +2,086+52.8% | Added |
| CSS LLC | 6,080 | $1.07M | 0.06% | −1,670−21.5% | Reduced |
| Private Advisor Group, LLC | 6,113 | $1.08M | 0.01% | +1,646+36.8% | Added |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 6,193 | $1.08M | 0.01% | 00.0% | Unchanged |
| Assenagon Asset Management S.A. | 6,200 | $1.09M | 0.00% | −713−10.3% | Reduced |
| Advisors Asset Management, Inc. | 6,212 | $1.09M | 0.02% | +132+2.2% | Added |
| United Capital Financial Advisers, LLC | 6,255 | $1.10M | 0.01% | +822+15.1% | Added |
| Mogy Joel R Investment Counsel Inc | 6,260 | $1.10M | 0.06% | 00.0% | Unchanged |
| Ballentine Partners, LLC | 6,305 | $1.11M | 0.02% | +364+6.1% | Added |
| Greenleaf Trust | 6,309 | $1.11M | 0.01% | +190+3.1% | Added |
| denkapparat Operations GmbH | 6,338 | $1.12M | 0.61% | 00.0% | Unchanged |
| Commerce Bank | 6,378 | $1.12M | 0.01% | +21+0.3% | Added |