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, Q2 2026
Institutional positions in Biogen Inc. as of Jun 30, 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
- 1,046
- +42 vs. Q1 2026
- Shares held
- 142.3M
- +7.45M (+5.5%) vs. Q1 2026
- Total value
- $30.7B
- +$6.00B (+24.3%) vs. Q1 2026
- New holders
- 126
- 427 more added
- Sold out
- 84
- 296 more reduced
11 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Norinchukin Bank, The | 9,240 | $2.00M | 0.02% | +20+0.2% | Added |
| Brown Brothers Harriman & Co | 9,312 | $2.01M | 0.01% | +3,019+48.0% | Added |
| Investment Management Corp of Ontario | 9,334 | $2.02M | 0.03% | −1,200−11.4% | Reduced |
| Sequoia Financial Advisors, LLC | 9,388 | $2.03M | 0.01% | −565−5.7% | Reduced |
| Integrated Wealth Concepts LLC | 9,426 | $2.04M | 0.01% | +1,810+23.8% | Added |
| Great Lakes Advisors, LLC | 9,477 | $2.05M | 0.02% | −13−0.1% | Reduced |
| Pinnacle Financial Partners, Inc. | 9,892 | $2.14M | 0.01% | −33−0.3% | Reduced |
| Crossmark Global Holdings, Inc. | 9,980 | $2.16M | 0.03% | +19+0.2% | Added |
| K.J. Harrison & Partners Inc | 10,000 | $2.16M | 0.31% | 00.0% | Unchanged |
| Canal Insurance CO | 10,000 | $2.16M | 0.47% | −10,000−50.0% | Reduced |
| Thor Investment Management Inc | 10,002 | $2.16M | 1.23% | +81+0.8% | Added |
| Kennedy Capital Management, Inc. | 10,098 | $2.18M | 0.04% | +290+3.0% | Added |
| Missouri Trust & Investment Co | 10,795 | $2.19M | 0.60% | +415+4.0% | Added |
| Saudi Central Bank | 10,273 | $2.22M | 0.03% | +4,858+89.7% | Added |
| Brinker Capital Investments, LLC | 10,358 | $2.24M | 0.02% | +1,861+21.9% | Added |
| CenterBook Partners LP | 10,418 | $2.25M | 0.11% | +10,418 | New |
| BI Asset Management Fondsmaeglerselskab A/S | 10,446 | $2.26M | 0.02% | +2,560+32.5% | Added |
| PensionDanmark Pensionsforsikringsaktieselskab | 10,506 | $2.27M | 0.02% | −488−4.4% | Reduced |
| Gulf International Bank (UK) Ltd | 11,183 | $2.42M | 0.05% | −257−2.2% | Reduced |
| Macquarie Group Ltd | 11,330 | $2.45M | 0.01% | +2,818+33.1% | Added |
| Catalyst Funds Management Pty Ltd | 11,400 | $2.46M | 0.14% | −570−4.8% | Reduced |
| Jane Street Group, LLC | 11,435 | $2.47M | 0.00% | +966+9.2% | Added |
| Teachers Retirement System of the State of Kentucky | 11,437 | $2.47M | 0.02% | 00.0% | Unchanged |
| Banque Cantonale Vaudoise | 11,496 | $2.48M | 0.10% | +3,568+45.0% | Added |
| Mizuho Securities USA LLC | 11,558 | $2.50M | 0.04% | +2,686+30.3% | Added |
| Public Employees Retirement Association of Colorado | 11,669 | $2.52M | 0.01% | 00.0% | Unchanged |
| Commerce Bank | 11,672 | $2.52M | 0.01% | +4,598+65.0% | Added |
| Turn8 Private Wealth Inc. | 12,068 | $2.53M | 1.69% | +12,068 | New |
| Avanza Fonder AB | 11,760 | $2.54M | 0.06% | −2,861−19.6% | Reduced |
| Natixis | 11,907 | $2.57M | 0.01% | −10,678−47.3% | Reduced |
| Beacon Investment Advisory Services, Inc. | 12,229 | $2.64M | 0.10% | −85−0.7% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 12,258 | $2.65M | 0.02% | −17,467−58.8% | Reduced |
| Marshall Wace, LLP | 12,595 | $2.72M | 0.00% | −217,284−94.5% | Reduced |
| Truist Financial Corp | 12,621 | $2.73M | 0.00% | +1,055+9.1% | Added |
| Fideuram Asset Management (Ireland) dac | 13,094 | $2.74M | 0.05% | +13,094 | New |
| Merit Financial Group, LLC | 12,725 | $2.75M | 0.02% | +1,295+11.3% | Added |
| Sivik Global Healthcare LLC | 15,000 | $2.75M | 2.09% | 00.0% | Unchanged |
| Pallas Capital Advisors LLC | 12,859 | $2.78M | 0.09% | +896+7.5% | Added |
| Triglav Skladi, D.O.O. | 12,976 | $2.80M | 0.15% | +548+4.4% | Added |
| Neuberger Berman Group LLC | 13,048 | $2.82M | 0.00% | +1,397+12.0% | Added |
| Advisors Asset Management, Inc. | 13,312 | $2.88M | 0.04% | +6,881+107.0% | Added |
| Allstate Corp | 13,369 | $2.89M | 0.03% | −4,186−23.8% | Reduced |
| Advisor Group Holdings, Inc. | 13,479 | $2.91M | 0.00% | +1,474+12.3% | Added |
| Canada Pension Plan Investment Board | 13,602 | $2.94M | 0.00% | −101,336−88.2% | Reduced |
| Gabelli Funds LLC | 14,100 | $3.05M | 0.02% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 14,134 | $3.05M | 0.03% | −1,072−7.0% | Reduced |
| Horizon Investments, LLC | 14,307 | $3.09M | 0.03% | +63+0.4% | Added |
| PEAK6 LLC | 14,752 | $3.19M | 0.08% | −13,414−47.6% | Reduced |
| GWM Advisors LLC | 15,037 | $3.25M | 0.01% | +2,006+15.4% | Added |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 15,238 | $3.29M | 0.10% | −735−4.6% | Reduced |
| Clark Estates Inc | 15,300 | $3.31M | 0.76% | 00.0% | Unchanged |
| Nomura Holdings Inc | 15,305 | $3.31M | 0.01% | −1,425−8.5% | Reduced |
| Baird Financial Group, Inc. | 15,360 | $3.32M | 0.00% | +11,147+264.6% | Added |
| Blair William & Co | 15,539 | $3.36M | 0.01% | +2,685+20.9% | Added |
| Pathstone Holdings, LLC | 15,469 | $3.36M | 0.01% | +561+3.8% | Added |
| La Banque Postale Asset Management SA | 15,741 | $3.40M | 0.03% | +11,374+260.5% | Added |
| Storebrand Asset Management AS | 15,812 | $3.42M | 0.01% | +11,589+274.4% | Added |
| M&T Bank Corp | 16,084 | $3.47M | 0.01% | −140−0.9% | Reduced |
| Morningstar Investment Management LLC | 19,344 | $3.55M | 0.22% | 00.0% | Unchanged |
| Bank of Nova Scotia | 16,446 | $3.55M | 0.01% | −3,990−19.5% | Reduced |
| Mutual of America Capital Management LLC | 16,455 | $3.56M | 0.03% | +799+5.1% | Added |
| Wealthfront Advisers LLC | 16,529 | $3.57M | 0.01% | +850+5.4% | Added |
| UniSuper Management Pty Ltd | 16,729 | $3.61M | 0.02% | +1,157+7.4% | Added |
| OP Asset Management Ltd | 16,758 | $3.62M | 0.04% | +1,495+9.8% | Added |
| Commonwealth Equity Services, LLC | 16,759 | $3.62M | 0.00% | −1,343−7.4% | Reduced |
| Nordea Investment Management AB | 17,055 | $3.66M | 0.00% | +469+2.8% | Added |
| State of Alaska, Department of Revenue | 17,031 | $3.68M | 0.04% | −476−2.7% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 17,156 | $3.71M | 0.01% | +1,917+12.6% | Added |
| Ilmarinen Mutual Pension Insurance Co | 17,400 | $3.76M | 0.03% | 00.0% | Unchanged |
| MH & Associates Securities Management Corp | 17,659 | $3.82M | 3.42% | −58−0.3% | Reduced |
| Cetera Investment Advisers | 17,662 | $3.82M | 0.00% | −4,782−21.3% | Reduced |
| ADAR1 Capital Management, LLC | 17,900 | $3.87M | 0.18% | +6,900+62.7% | Added |
| Kinneret Advisory, LLC | 17,946 | $3.88M | 0.31% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 18,215 | $3.94M | 0.04% | +1,374+8.2% | Added |
| Artia Global Partners LP | 18,437 | $3.98M | 0.76% | 00.0% | Unchanged |
| MML Investors Services, LLC | 18,651 | $4.03M | 0.01% | +7,311+64.5% | Added |
| Elo Mutual Pension Insurance Co | 19,287 | $4.17M | 0.05% | +1,560+8.8% | Added |
| MAI Capital Management | 19,431 | $4.20M | 0.02% | +14,729+313.2% | Added |
| Jupiter Topco LLC | 19,831 | $4.28M | 0.00% | +19,831 | New |
| Teacher Retirement System of Texas | 19,995 | $4.32M | 0.01% | −1,304−6.1% | Reduced |
| Krensavage Asset Management, LLC | 20,000 | $4.32M | 1.64% | 00.0% | Unchanged |
| Inspire Trust Co, N.A. | 20,000 | $4.32M | 0.59% | 00.0% | Unchanged |
| Vontobel Holding Ltd. | 20,311 | $4.39M | 0.01% | +6,601+48.1% | Added |
| Kovitz Investment Group Partners, LLC | 20,457 | $4.42M | 0.10% | −483−2.3% | Reduced |
| IMC-Chicago, LLC | 20,649 | $4.46M | 0.04% | +20,649 | New |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 20,916 | $4.52M | 0.03% | +427+2.1% | Added |
| Meitav Dash Investments Ltd | 20,972 | $4.53M | 0.03% | 00.0% | Unchanged |
| Hussman Strategic Advisors, Inc. | 21,000 | $4.54M | 1.05% | +14,700+233.3% | Added |
| Caption Management, LLC | 21,000 | $4.54M | 0.16% | +21,000 | New |
| Leonteq Securities AG | 21,354 | $4.61M | 0.28% | −5,100−19.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 21,557 | $4.66M | 0.01% | −39,219−64.5% | Reduced |
| Empowered Funds, LLC | 21,948 | $4.74M | 0.02% | +173+0.8% | Added |
| New York Life Investment Management LLC | 22,013 | $4.76M | 0.03% | +108+0.5% | Added |
| British Columbia Investment Management Corp | 22,021 | $4.76M | 0.03% | +1,804+8.9% | Added |
| Police & Firemen's Retirement System of New Jersey | 22,103 | $4.78M | 0.04% | −374−1.7% | Reduced |
| Utah Retirement Systems | 22,408 | $4.84M | 0.05% | −1,306−5.5% | Reduced |
| SG Americas Securities, LLC | 22,800 | $4.93M | 0.00% | −172,868−88.3% | Reduced |
| Captrust Financial Advisors | 22,885 | $4.94M | 0.01% | +3,308+16.9% | Added |
| SRS Capital Advisors, Inc. | 23,147 | $5.00M | 0.03% | +22,632+4,394.6% | Added |
| Convergence Investment Partners, LLC | 23,321 | $5.04M | 0.48% | +9,764+72.0% | Added |