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 |
|---|---|---|---|---|---|
| Nykredit A/S | 37,134 | $8.02M | 0.03% | +37,134 | New |
| JustInvest LLC | 37,015 | $8.00M | 0.07% | +602+1.7% | Added |
| IFM Investors Pty Ltd | 36,263 | $7.83M | 0.05% | −2,258−5.9% | Reduced |
| Nisa Investment Advisors, LLC | 35,577 | $7.69M | 0.02% | −243−0.7% | Reduced |
| Generali Asset Management SPA SGR | 35,374 | $7.64M | 0.14% | +1,180+3.5% | Added |
| Zurich Insurance Group Ltd | 35,169 | $7.60M | 0.05% | +35,169 | New |
| ProShare Advisors LLC | 35,127 | $7.59M | 0.01% | −799−2.2% | Reduced |
| CIBC Asset Management Inc | 35,021 | $7.57M | 0.02% | −175−0.5% | Reduced |
| Calamos Advisors LLC | 34,879 | $7.54M | 0.03% | −648−1.8% | Reduced |
| Ritholtz Wealth Management | 34,283 | $7.41M | 0.11% | −660−1.9% | Reduced |
| Grimes & Company, Inc. | 33,877 | $7.32M | 0.16% | −807−2.3% | Reduced |
| MetLife Investment Management | 33,770 | $7.30M | 0.03% | −509−1.5% | Reduced |
| Mercer Global Advisors Inc | 33,731 | $7.29M | 0.01% | −4,869−12.6% | Reduced |
| Korea Investment CORP | 33,574 | $7.25M | 0.01% | −40,414−54.6% | Reduced |
| CIBC Bancorp USA Inc. | 33,539 | $7.25M | 0.01% | −8,363−20.0% | Reduced |
| Insight Wealth Strategies, LLC | 34,320 | $7.20M | 0.70% | +4,974+16.9% | Added |
| Swiss Life Asset Management Ltd | 33,311 | $7.20M | 0.03% | +2,023+6.5% | Added |
| Fifth Third Bancorp | 32,841 | $7.10M | 0.01% | +125+0.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 32,609 | $7.05M | 0.03% | −1,577−4.6% | Reduced |
| US Bancorp | 32,597 | $7.04M | 0.01% | +1,374+4.4% | Added |
| Federation des caisses Desjardins du Quebec | 31,948 | $6.90M | 0.02% | +12,367+63.2% | Added |
| Oversea-Chinese Banking CORP Ltd | 31,867 | $6.89M | 0.16% | −5,598−14.9% | Reduced |
| Leuthold Group, LLC | 31,489 | $6.80M | 0.68% | −1,654−5.0% | Reduced |
| DnB Asset Management AS | 31,221 | $6.75M | 0.02% | 00.0% | Unchanged |
| Retirement Systems of Alabama | 31,015 | $6.70M | 0.02% | −151−0.5% | Reduced |
| Verition Fund Management LLC | 30,914 | $6.68M | 0.05% | +30,914 | New |
| Rafferty Asset Management, LLC | 30,461 | $6.58M | 0.01% | −4,557−13.0% | Reduced |
| Daiwa Securities Group Inc. | 29,009 | $6.27M | 0.01% | +1,873+6.9% | Added |
| Jones Financial Companies LLLP | 28,667 | $6.19M | 0.00% | +4,113+16.8% | Added |
| Baader Bank INC | 28,568 | $6.17M | 0.50% | −2,233−7.2% | Reduced |
| Systematic Financial Management LP | 27,975 | $6.04M | 0.12% | +11,755+72.5% | Added |
| Xponance, Inc. | 27,821 | $6.01M | 0.04% | +1,365+5.2% | Added |
| Jefferies Financial Group Inc. | 27,463 | $5.93M | 0.05% | +5,561+25.4% | Added |
| Amalgamated Bank | 25,842 | $5.58M | 0.04% | −3,920−13.2% | Reduced |
| Old North State Wealth Management, LLC | 24,720 | $5.34M | 2.28% | +125+0.5% | Added |
| Colony Group, LLC | 24,689 | $5.33M | 0.01% | +3,707+17.7% | Added |
| Public Sector Pension Investment Board | 24,211 | $5.23M | 0.01% | +419+1.8% | Added |
| Rakuten Investment Management, Inc. | 24,097 | $5.22M | 0.02% | +2,319+10.6% | Added |
| Mubadala Investment Co PJSC | 24,083 | $5.20M | 0.01% | +24,083 | New |
| Hillman Capital Management, Inc. | 23,993 | $5.18M | 3.75% | −5,547−18.8% | Reduced |
| CAPROCK Group, Inc. | 23,824 | $5.15M | 0.10% | −1,827−7.1% | Reduced |
| NorthCrest Asset Manangement, LLC | 25,857 | $5.14M | 0.13% | +845+3.4% | Added |
| NEOS Investment Management LLC | 23,734 | $5.13M | 0.02% | +2,894+13.9% | Added |
| Guggenheim Capital LLC | 23,587 | $5.10M | 0.03% | −2,795−10.6% | Reduced |
| China Universal Asset Management Co., Ltd. | 23,497 | $5.08M | 0.30% | −2,547−9.8% | Reduced |
| Omers Administration Corp | 23,421 | $5.06M | 0.03% | +3,272+16.2% | Added |
| Convergence Investment Partners, LLC | 23,321 | $5.04M | 0.48% | +9,764+72.0% | Added |
| SRS Capital Advisors, Inc. | 23,147 | $5.00M | 0.03% | +22,632+4,394.6% | Added |
| Captrust Financial Advisors | 22,885 | $4.94M | 0.01% | +3,308+16.9% | Added |
| SG Americas Securities, LLC | 22,800 | $4.93M | 0.00% | −172,868−88.3% | Reduced |
| Utah Retirement Systems | 22,408 | $4.84M | 0.05% | −1,306−5.5% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 22,103 | $4.78M | 0.04% | −374−1.7% | Reduced |
| British Columbia Investment Management Corp | 22,021 | $4.76M | 0.03% | +1,804+8.9% | Added |
| New York Life Investment Management LLC | 22,013 | $4.76M | 0.03% | +108+0.5% | Added |
| Empowered Funds, LLC | 21,948 | $4.74M | 0.02% | +173+0.8% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 21,557 | $4.66M | 0.01% | −39,219−64.5% | Reduced |
| Leonteq Securities AG | 21,354 | $4.61M | 0.28% | −5,100−19.3% | Reduced |
| 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 |
| Meitav Dash Investments Ltd | 20,972 | $4.53M | 0.03% | 00.0% | Unchanged |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 20,916 | $4.52M | 0.03% | +427+2.1% | Added |
| IMC-Chicago, LLC | 20,649 | $4.46M | 0.04% | +20,649 | New |
| Kovitz Investment Group Partners, LLC | 20,457 | $4.42M | 0.10% | −483−2.3% | Reduced |
| Vontobel Holding Ltd. | 20,311 | $4.39M | 0.01% | +6,601+48.1% | Added |
| Inspire Trust Co, N.A. | 20,000 | $4.32M | 0.59% | 00.0% | Unchanged |
| Krensavage Asset Management, LLC | 20,000 | $4.32M | 1.64% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 19,995 | $4.32M | 0.01% | −1,304−6.1% | Reduced |
| Jupiter Topco LLC | 19,831 | $4.28M | 0.00% | +19,831 | New |
| MAI Capital Management | 19,431 | $4.20M | 0.02% | +14,729+313.2% | Added |
| Elo Mutual Pension Insurance Co | 19,287 | $4.17M | 0.05% | +1,560+8.8% | Added |
| MML Investors Services, LLC | 18,651 | $4.03M | 0.01% | +7,311+64.5% | Added |
| Artia Global Partners LP | 18,437 | $3.98M | 0.76% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 18,215 | $3.94M | 0.04% | +1,374+8.2% | Added |
| Kinneret Advisory, LLC | 17,946 | $3.88M | 0.31% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 17,900 | $3.87M | 0.18% | +6,900+62.7% | Added |
| Cetera Investment Advisers | 17,662 | $3.82M | 0.00% | −4,782−21.3% | Reduced |
| MH & Associates Securities Management Corp | 17,659 | $3.82M | 3.42% | −58−0.3% | Reduced |
| Ilmarinen Mutual Pension Insurance Co | 17,400 | $3.76M | 0.03% | 00.0% | Unchanged |
| Fuller & Thaler Asset Management, Inc. | 17,156 | $3.71M | 0.01% | +1,917+12.6% | Added |
| State of Alaska, Department of Revenue | 17,031 | $3.68M | 0.04% | −476−2.7% | Reduced |
| Nordea Investment Management AB | 17,055 | $3.66M | 0.00% | +469+2.8% | Added |
| Commonwealth Equity Services, LLC | 16,759 | $3.62M | 0.00% | −1,343−7.4% | Reduced |
| OP Asset Management Ltd | 16,758 | $3.62M | 0.04% | +1,495+9.8% | Added |
| UniSuper Management Pty Ltd | 16,729 | $3.61M | 0.02% | +1,157+7.4% | Added |
| Wealthfront Advisers LLC | 16,529 | $3.57M | 0.01% | +850+5.4% | Added |
| Mutual of America Capital Management LLC | 16,455 | $3.56M | 0.03% | +799+5.1% | Added |
| Bank of Nova Scotia | 16,446 | $3.55M | 0.01% | −3,990−19.5% | Reduced |
| Morningstar Investment Management LLC | 19,344 | $3.55M | 0.22% | 00.0% | Unchanged |
| M&T Bank Corp | 16,084 | $3.47M | 0.01% | −140−0.9% | Reduced |
| Storebrand Asset Management AS | 15,812 | $3.42M | 0.01% | +11,589+274.4% | Added |
| La Banque Postale Asset Management SA | 15,741 | $3.40M | 0.03% | +11,374+260.5% | Added |
| Pathstone Holdings, LLC | 15,469 | $3.36M | 0.01% | +561+3.8% | Added |
| Blair William & Co | 15,539 | $3.36M | 0.01% | +2,685+20.9% | Added |
| Baird Financial Group, Inc. | 15,360 | $3.32M | 0.00% | +11,147+264.6% | Added |
| Nomura Holdings Inc | 15,305 | $3.31M | 0.01% | −1,425−8.5% | Reduced |
| Clark Estates Inc | 15,300 | $3.31M | 0.76% | 00.0% | Unchanged |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 15,238 | $3.29M | 0.10% | −735−4.6% | Reduced |
| GWM Advisors LLC | 15,037 | $3.25M | 0.01% | +2,006+15.4% | Added |
| PEAK6 LLC | 14,752 | $3.19M | 0.08% | −13,414−47.6% | Reduced |
| Horizon Investments, LLC | 14,307 | $3.09M | 0.03% | +63+0.4% | Added |