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, Q3 2025
Institutional positions in Biogen Inc. as of Sep 30, 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
- 909
- +52 vs. Q2 2025
- Shares held
- 131.3M
- +3.52M (+2.8%) vs. Q2 2025
- Total value
- $18.4B
- +$2.32B (+14.5%) vs. Q2 2025
- New holders
- 125
- 323 more added
- Sold out
- 73
- 268 more reduced
10 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| NJ State Employees Deferred Compensation Plan | 5,180 | $725.6K | 0.08% | +2,680+107.2% | Added |
| Frank, Rimerman Advisors LLC | 5,181 | $725.8K | 0.05% | −187−3.5% | Reduced |
| Empirical Finance, LLC | 5,286 | $740.5K | 0.04% | +53+1.0% | Added |
| CAPROCK Group, Inc. | 5,611 | $741.9K | 0.02% | +5,611 | New |
| Inceptionr LLC | 5,302 | $742.7K | 0.18% | −4,198−44.2% | Reduced |
| Jane Street Group, LLC | 5,340 | $748.0K | 0.00% | −27,701−83.8% | Reduced |
| Guardian Investment Management | 5,400 | $756.4K | 0.66% | +100+1.9% | Added |
| United Capital Financial Advisers, LLC | 5,433 | $761.1K | 0.01% | +411+8.2% | Added |
| Shell Asset Management Co | 5,448 | $763.0K | 0.08% | −2,992−35.5% | Reduced |
| Boothbay Fund Management, LLC | 5,500 | $770.4K | 0.02% | −5,422−49.6% | Reduced |
| Essential Partners LLC | 5,559 | $778.7K | 0.26% | +214+4.0% | Added |
| Tokio Marine Asset Management Co Ltd | 5,569 | $780.1K | 0.03% | 00.0% | Unchanged |
| North Star Investment Management Corp. | 5,622 | $787.5K | 0.05% | 00.0% | Unchanged |
| BI Asset Management Fondsmaeglerselskab A/S | 5,688 | $797.0K | 0.01% | −938−14.2% | Reduced |
| Hills Bank & Trust Co | 5,745 | $804.8K | 0.05% | +159+2.8% | Added |
| Gifford Fong Associates | 5,750 | $805.0K | 0.17% | 00.0% | Unchanged |
| Summit Trail Advisors, LLC | 5,889 | $824.9K | 0.01% | +3,202+119.2% | Added |
| Northwestern Mutual Wealth Management Co | 5,930 | $830.7K | 0.00% | +127+2.2% | Added |
| Ballentine Partners, LLC | 5,941 | $832.2K | 0.01% | +466+8.5% | Added |
| Holocene Advisors, LP | 5,979 | $837.5K | 0.00% | +5,979 | New |
| PKO Investment Management Joint-Stock Co | 6,000 | $840.5K | 0.07% | −1,800−23.1% | Reduced |
| Dai-Ichi Life Insurance Company, Ltd | 6,019 | $843.1K | 0.02% | 00.0% | Unchanged |
| Summitry LLC | 6,043 | $846.5K | 0.04% | +3,392+128.0% | Added |
| Money Concepts Capital Corp | 6,058 | $848.6K | 0.05% | +29+0.5% | Added |
| Advisors Asset Management, Inc. | 6,080 | $851.7K | 0.01% | +367+6.4% | Added |
| Greenleaf Trust | 6,119 | $857.1K | 0.01% | +450+7.9% | Added |
| Ameritas Investment Partners, Inc. | 6,226 | $872.1K | 0.03% | +39+0.6% | Added |
| Emerald Advisers, LLC | 6,247 | $875.1K | 0.03% | +3,066+96.4% | Added |
| Mogy Joel R Investment Counsel Inc | 6,260 | $876.9K | 0.05% | 00.0% | Unchanged |
| Lido Advisors, LLC | 6,299 | $882.4K | 0.00% | +1,151+22.4% | Added |
| Metis Global Partners, LLC | 6,324 | $885.9K | 0.02% | −323−4.9% | Reduced |
| denkapparat Operations GmbH | 6,338 | $887.8K | 0.57% | +2,098+49.5% | Added |
| Jump Financial, LLC | 6,352 | $889.8K | 0.01% | −1,817−22.2% | Reduced |
| Commerce Bank | 6,357 | $890.5K | 0.00% | +121+1.9% | Added |
| E. Ohman J:or Asset Management AB | 6,399 | $896.4K | 0.02% | 00.0% | Unchanged |
| Pensionmark Financial Group, LLC | 6,422 | $899.6K | 0.02% | −56−0.9% | Reduced |
| Koss-Olinger Consulting, LLC | 7,256 | $911.0K | 0.08% | 00.0% | Unchanged |
| Brighton Jones LLC | 6,514 | $912.4K | 0.02% | +1,412+27.7% | Added |
| Tocqueville Asset Management L.P. | 6,551 | $917.7K | 0.01% | +964+17.3% | Added |
| New Mexico Educational Retirement Board | 6,624 | $928.0K | 0.03% | −200−2.9% | Reduced |
| Loring Wolcott & Coolidge Fiduciary Advisors LLP | 6,193 | $929.4K | 0.01% | 00.0% | Unchanged |
| Twin Capital Management Inc | 6,788 | $950.9K | 0.12% | −5,246−43.6% | Reduced |
| Assenagon Asset Management S.A. | 6,913 | $968.4K | 0.00% | −4,023−36.8% | Reduced |
| Securian Asset Management, Inc | 6,950 | $973.6K | 0.03% | −646−8.5% | Reduced |
| Fox Run Management, L.L.C. | 6,969 | $976.2K | 0.15% | −5,922−45.9% | Reduced |
| Citizens & Northern Corp | 6,996 | $980.0K | 0.24% | −32−0.5% | Reduced |
| Canada Post Corp Registered Pension Plan | 7,193 | $996.4K | 0.04% | 00.0% | Unchanged |
| Landscape Capital Management, L.L.C. | 7,122 | $997.6K | 0.06% | +7,122 | New |
| Brown Advisory Inc | 7,213 | $1.01M | 0.00% | −18−0.2% | Reduced |
| MML Investors Services, LLC | 7,286 | $1.02M | 0.00% | −1,274−14.9% | Reduced |
| Maryland State Retirement & Pension System | 7,381 | $1.03M | 0.02% | +572+8.4% | Added |
| Linden Thomas Advisory Services, LLC | 7,593 | $1.06M | 0.11% | +42+0.6% | Added |
| Squarepoint Ops LLC | 7,628 | $1.07M | 0.00% | −29,533−79.5% | Reduced |
| Allspring Global Investments Holdings, LLC | 7,022 | $1.08M | 0.00% | −251−3.5% | Reduced |
| CSS LLC | 7,750 | $1.09M | 0.06% | +830+12.0% | Added |
| Gulf International Bank (UK) Ltd | 7,924 | $1.11M | 0.04% | 00.0% | Unchanged |
| CSM Advisors, LLC | 7,971 | $1.12M | 0.03% | −19,488−71.0% | Reduced |
| Buckingham Strategic Partners | 7,387 | $1.13M | 0.01% | +1,076+17.0% | Added |
| Jacobi Capital Management LLC | 8,125 | $1.14M | 0.07% | +162+2.0% | Added |
| Cairn Investment Group, Inc. | 8,204 | $1.15M | 0.55% | −70−0.8% | Reduced |
| Thor Investment Management Inc | 8,238 | $1.15M | 0.70% | +999+13.8% | Added |
| Keybank National Association | 8,254 | $1.16M | 0.00% | +161+2.0% | Added |
| Capstone Investment Advisors, LLC | 8,271 | $1.16M | 0.01% | +2,285+38.2% | Added |
| Merit Financial Group, LLC | 8,367 | $1.17M | 0.01% | +1,376+19.7% | Added |
| Missouri Trust & Investment Co | 8,425 | $1.18M | 0.35% | +615+7.9% | Added |
| Krilogy Financial LLC | 7,707 | $1.18M | 0.04% | +7,707 | New |
| Groupama Asset Managment | 8,524 | $1.19M | 0.02% | −394−4.4% | Reduced |
| Quadrant Capital Group LLC | 8,528 | $1.19M | 0.04% | +356+4.4% | Added |
| M&G Plc | 8,593 | $1.20M | 0.01% | 00.0% | Unchanged |
| Hartford Investment Management Co | 8,622 | $1.21M | 0.04% | −169−1.9% | Reduced |
| Dakota Wealth Management | 8,677 | $1.22M | 0.02% | +8,677 | New |
| Jones Financial Companies LLLP | 8,856 | $1.22M | 0.00% | +1,277+16.8% | Added |
| Whittier Trust Co of Nevada Inc | 7,721 | $1.23M | 0.03% | −25−0.3% | Reduced |
| Kennedy Capital Management, Inc. | 8,837 | $1.24M | 0.03% | +4,334+96.2% | Added |
| Truist Financial Corp | 8,957 | $1.25M | 0.00% | +254+2.9% | Added |
| Harvest Fund Management Co., Ltd | 8,998 | $1.26M | 0.05% | +679+8.2% | Added |
| Shay Capital LLC | 9,000 | $1.26M | 0.23% | +9,000 | New |
| Fifth Third Bancorp | 9,010 | $1.26M | 0.00% | +1,633+22.1% | Added |
| Sterling Capital Management LLC | 9,032 | $1.27M | 0.02% | −691−7.1% | Reduced |
| Premier Path Wealth Partners, LLC | 9,043 | $1.27M | 0.16% | −508−5.3% | Reduced |
| Empowered Funds, LLC | 9,043 | $1.27M | 0.01% | +700+8.4% | Added |
| J. Safra Sarasin Holding AG | 9,081 | $1.27M | 0.02% | +6,707+282.5% | Added |
| Sequoia Financial Advisors, LLC | 9,096 | $1.27M | 0.01% | +4,569+100.9% | Added |
| GWM Advisors LLC | 9,138 | $1.28M | 0.01% | +6,465+241.9% | Added |
| Kentucky Retirement Systems | 9,171 | $1.28M | 0.04% | −162−1.7% | Reduced |
| Investment Management Corp of Ontario | 9,387 | $1.31M | 0.02% | +3,309+54.4% | Added |
| Shelton Capital Management | 9,444 | $1.32M | 0.03% | −7,924−45.6% | Reduced |
| Great Lakes Advisors, LLC | 9,479 | $1.33M | 0.01% | +9,479 | New |
| Convergence Investment Partners, LLC | 9,583 | $1.34M | 0.30% | +9,583 | New |
| SG Americas Securities, LLC | 9,707 | $1.36M | 0.00% | −12,763−56.8% | Reduced |
| Generali Investments, Management Co LLC | 9,970 | $1.40M | 0.29% | +8,008+408.2% | Added |
| Krensavage Asset Management, LLC | 10,000 | $1.40M | 0.60% | +10,000 | New |
| Colony Group, LLC | 9,917 | $1.41M | 0.00% | +3,209+47.8% | Added |
| Mizuho Securities USA LLC | 10,678 | $1.41M | 0.03% | +548+5.4% | Added |
| HighTower Advisors, LLC | 10,116 | $1.42M | 0.00% | +1,245+14.0% | Added |
| Jacobs Levy Equity Management, Inc | 10,124 | $1.42M | 0.01% | −2,501−19.8% | Reduced |
| Auxier Asset Management | 10,162 | $1.42M | 0.20% | −70−0.7% | Reduced |
| Pitcairn Co | 10,192 | $1.43M | 0.11% | +2,738+36.7% | Added |
| Capula Management Ltd | 10,208 | $1.43M | 0.01% | +10,208 | New |
| Federation des caisses Desjardins du Quebec | 10,575 | $1.48M | 0.01% | +431+4.2% | Added |