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 |
|---|---|---|---|---|---|
| J. Safra Sarasin Holding AG | 6,474 | $1.14M | 0.02% | −2,607−28.7% | Reduced |
| Northwestern Mutual Wealth Management Co | 6,584 | $1.16M | 0.00% | +654+11.0% | Added |
| Osmosis Investment Management UK Ltd | 6,635 | $1.17M | 0.03% | +6,635 | New |
| Bank of Hawaii | 6,667 | $1.17M | 0.06% | +6,667 | New |
| Paragon Capital Management Inc | 6,686 | $1.18M | 0.91% | +6,686 | New |
| Pensionmark Financial Group, LLC | 6,739 | $1.19M | 0.02% | +317+4.9% | Added |
| Laird Norton Trust Company, LLC | 6,820 | $1.20M | 0.02% | +6,820 | New |
| New Mexico Educational Retirement Board | 6,824 | $1.20M | 0.04% | +200+3.0% | Added |
| GF Fund Management Co. Ltd. | 6,880 | $1.21M | 0.02% | −29,529−81.1% | Reduced |
| VestGen Advisors, LLC | 6,884 | $1.21M | 0.05% | +6,884 | New |
| Citizens & Northern Corp | 6,912 | $1.22M | 0.30% | −84−1.2% | Reduced |
| Stableford Capital II LLC | 6,914 | $1.22M | 0.44% | +6,914 | New |
| Brown Advisory Inc | 7,191 | $1.27M | 0.00% | −22−0.3% | Reduced |
| Metis Global Partners, LLC | 7,211 | $1.27M | 0.03% | +887+14.0% | Added |
| Linden Thomas Advisory Services, LLC | 7,264 | $1.28M | 0.13% | −329−4.3% | Reduced |
| Allspring Global Investments Holdings, LLC | 7,286 | $1.30M | 0.00% | +264+3.8% | Added |
| Maryland State Retirement & Pension System | 7,381 | $1.30M | 0.03% | 00.0% | Unchanged |
| Louisiana State Employees Retirement System | 7,500 | $1.32M | 0.02% | −10,900−59.2% | Reduced |
| Buckingham Strategic Partners | 7,505 | $1.32M | 0.02% | +118+1.6% | Added |
| North Dakota State Investment Board | 7,575 | $1.33M | 0.05% | +7,575 | New |
| Sompo Asset Management Co., Ltd. | 7,576 | $1.33M | 0.23% | +4,336+133.8% | Added |
| Krilogy Financial LLC | 7,706 | $1.33M | 0.05% | −10.0% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 7,819 | $1.38M | 0.00% | +3,478+80.1% | Added |
| Jacobi Capital Management LLC | 7,836 | $1.38M | 0.08% | −289−3.6% | Reduced |
| Gulf International Bank (UK) Ltd | 7,901 | $1.39M | 0.05% | −23−0.3% | Reduced |
| Canada Post Corp Registered Pension Plan | 7,973 | $1.40M | 0.05% | +780+10.8% | Added |
| Whittier Trust Co of Nevada Inc | 7,708 | $1.41M | 0.03% | −13−0.2% | Reduced |
| Cairn Investment Group, Inc. | 8,096 | $1.43M | 0.68% | −108−1.3% | Reduced |
| MML Investors Services, LLC | 8,225 | $1.45M | 0.00% | +939+12.9% | Added |
| AG2R la Mondiale Gestion D'Actifs | 8,264 | $1.45M | 0.06% | +8,264 | New |
| Thor Investment Management Inc | 8,314 | $1.46M | 0.84% | +76+0.9% | Added |
| Keybank National Association | 8,418 | $1.48M | 0.01% | +164+2.0% | Added |
| Groupama Asset Managment | 8,431 | $1.48M | 0.02% | −93−1.1% | Reduced |
| Blair William & Co | 8,443 | $1.49M | 0.00% | −5,577−39.8% | Reduced |
| Missouri Trust & Investment Co | 8,490 | $1.49M | 0.44% | +65+0.8% | Added |
| Hartford Investment Management Co | 8,501 | $1.50M | 0.04% | −121−1.4% | Reduced |
| M&G Plc | 8,593 | $1.51M | 0.01% | 00.0% | Unchanged |
| LMR Partners LLP | 8,630 | $1.52M | 0.01% | +8,630 | New |
| Sterling Capital Management LLC | 8,661 | $1.52M | 0.02% | −371−4.1% | Reduced |
| Quadrant Capital Group LLC | 8,664 | $1.52M | 0.05% | +136+1.6% | Added |
| Abacus Wealth Partners, LLC | 8,768 | $1.54M | 0.15% | +8,768 | New |
| Two Sigma Advisers, LP | 8,800 | $1.55M | 0.00% | −4,700−34.8% | Reduced |
| Auxier Asset Management | 8,911 | $1.57M | 0.22% | −1,251−12.3% | Reduced |
| Callan Family Office, LLC | 8,995 | $1.58M | 0.03% | +6,843+318.0% | Added |
| Kennedy Capital Management, Inc. | 9,003 | $1.58M | 0.03% | +166+1.9% | Added |
| PensionDanmark Pensionsforsikringsaktieselskab | 9,162 | $1.61M | 0.01% | +9,162 | New |
| Kentucky Retirement Systems | 9,171 | $1.61M | 0.04% | 00.0% | Unchanged |
| Norinchukin Bank, The | 9,186 | $1.62M | 0.02% | −3,442−27.3% | Reduced |
| Fifth Third Bancorp | 9,212 | $1.62M | 0.01% | +202+2.2% | Added |
| ICICI Prudential Asset Management Co Ltd | 9,462 | $1.67M | 0.19% | −12,241−56.4% | Reduced |
| Great Lakes Advisors, LLC | 9,490 | $1.67M | 0.01% | +11+0.1% | Added |
| Allstate Corp | 9,672 | $1.70M | 0.02% | +4,972+105.8% | Added |
| Baird Financial Group, Inc. | 9,691 | $1.71M | 0.00% | −3,057−24.0% | Reduced |
| Vontobel Holding Ltd. | 9,841 | $1.73M | 0.01% | −10,147−50.8% | Reduced |
| Jacobs Levy Equity Management, Inc | 9,873 | $1.74M | 0.01% | −251−2.5% | Reduced |
| Glenmede Trust Co NA | 9,919 | $1.75M | 0.01% | +9,919 | New |
| K.J. Harrison & Partners Inc | 10,000 | $1.76M | 0.23% | −6−0.1% | Reduced |
| Krensavage Asset Management, LLC | 10,000 | $1.76M | 0.62% | 00.0% | Unchanged |
| Crossmark Global Holdings, Inc. | 10,094 | $1.78M | 0.03% | +6,436+175.9% | Added |
| Winton Group Ltd | 10,145 | $1.79M | 0.06% | +10,145 | New |
| Aster Capital Management (DIFC) Ltd | 10,487 | $1.85M | 0.81% | +10,487 | New |
| Merit Financial Group, LLC | 10,517 | $1.85M | 0.01% | +2,150+25.7% | Added |
| Sequoia Financial Advisors, LLC | 10,564 | $1.86M | 0.01% | +1,468+16.1% | Added |
| Ensign Peak Advisors, Inc | 10,676 | $1.88M | 0.00% | −24,110−69.3% | Reduced |
| Pinnacle Financial Partners, Inc. | 10,909 | $1.92M | 0.01% | +10,909 | New |
| Sig Brokerage, LP | 10,922 | $1.92M | 0.65% | +6,141+128.4% | Added |
| Generali Investments, Management Co LLC | 10,974 | $1.93M | 0.38% | +1,004+10.1% | Added |
| Mizuho Securities USA LLC | 10,682 | $1.95M | 0.03% | +40.0% | Added |
| Summit Financial, LLC | 11,139 | $1.96M | 0.03% | +11,139 | New |
| Catalyst Funds Management Pty Ltd | 11,400 | $2.01M | 0.47% | +11,400 | New |
| Neuberger Berman Group LLC | 11,404 | $2.01M | 0.00% | +426+3.9% | Added |
| Truist Financial Corp | 11,407 | $2.01M | 0.00% | +2,450+27.4% | Added |
| Teachers Retirement System of the State of Kentucky | 11,437 | $2.01M | 0.02% | 00.0% | Unchanged |
| Brinker Capital Investments, LLC | 11,440 | $2.01M | 0.01% | +6,612+137.0% | Added |
| Public Employees Retirement Association of Colorado | 11,669 | $2.05M | 0.01% | 00.0% | Unchanged |
| Janney Montgomery Scott LLC | 11,775 | $2.07M | 0.00% | −6,928−37.0% | Reduced |
| Pallas Capital Advisors LLC | 11,783 | $2.07M | 0.07% | +158+1.4% | Added |
| HighTower Advisors, LLC | 11,959 | $2.10M | 0.00% | +1,843+18.2% | Added |
| Triglav Skladi, D.O.O. | 12,130 | $2.13M | 0.13% | −6,000−33.1% | Reduced |
| Convergence Investment Partners, LLC | 12,156 | $2.14M | 0.43% | +2,573+26.8% | Added |
| Twin Tree Management, LP | 12,270 | $2.16M | 0.22% | +12,270 | New |
| Investment Management Corp of Ontario | 12,342 | $2.17M | 0.03% | +2,955+31.5% | Added |
| Federation des caisses Desjardins du Quebec | 12,348 | $2.17M | 0.01% | +1,773+16.8% | Added |
| Provident Co of the Employees of the Hebrew University LTD | 12,529 | $2.20M | 2.29% | 00.0% | Unchanged |
| Beacon Investment Advisory Services, Inc. | 12,674 | $2.23M | 0.09% | −256−2.0% | Reduced |
| Jones Financial Companies LLLP | 12,825 | $2.26M | 0.00% | +3,969+44.8% | Added |
| Maven Securities LTD | 13,069 | $2.30M | 0.29% | +13,069 | New |
| Camarda Financial Advisors, LLC | 13,257 | $2.33M | 0.89% | +13,257 | New |
| Evoke Wealth, LLC | 13,543 | $2.38M | 0.05% | +171+1.3% | Added |
| Pathstone Holdings, LLC | 13,808 | $2.43M | 0.01% | +824+6.3% | Added |
| Nordea Investment Management AB | 14,022 | $2.46M | 0.00% | −118,561−89.4% | Reduced |
| Thrivent Financial for Lutherans | 13,987 | $2.46M | 0.00% | −68,104−83.0% | Reduced |
| Stoneridge Investment Partners LLC | 14,116 | $2.48M | 1.73% | −483−3.3% | Reduced |
| Profund Advisors LLC | 14,200 | $2.50M | 0.08% | −9,931−41.2% | Reduced |
| Fieldview Capital Management, LLC | 14,272 | $2.51M | 0.43% | +14,272 | New |
| Advisor Group Holdings, Inc. | 14,447 | $2.54M | 0.00% | +2,854+24.6% | Added |
| Colony Group, LLC | 14,581 | $2.57M | 0.00% | +4,664+47.0% | Added |
| Avanza Fonder AB | 14,743 | $2.59M | 0.07% | −544−3.6% | Reduced |
| Bokf, NA | 14,868 | $2.62M | 0.04% | −5,412−26.7% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 14,899 | $2.62M | 0.01% | 00.0% | Unchanged |