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 |
|---|---|---|---|---|---|
| Kennondale Capital Management LLC | 2,760 | $386.6K | 0.30% | 00.0% | Unchanged |
| Syon Capital LLC | 2,770 | $388.0K | 0.02% | +518+23.0% | Added |
| Bessemer Group Inc | 2,772 | $389.0K | 0.00% | −772−21.8% | Reduced |
| Nicolet Bankshares Inc | 2,792 | $391.1K | 0.06% | +2+0.1% | Added |
| Vise Technologies, Inc. | 2,799 | $392.0K | 0.01% | −371−11.7% | Reduced |
| KCM Investment Advisors LLC | 2,799 | $392.1K | 0.01% | −20−0.7% | Reduced |
| MUFG Securities EMEA plc | 2,806 | $393.1K | 0.01% | +2,375+551.0% | Added |
| Allworth Financial LP | 2,840 | $397.8K | 0.00% | +661+30.3% | Added |
| Cim Investment Mangement Inc | 2,844 | $398.4K | 0.11% | −2,920−50.7% | Reduced |
| Forum Financial Management, LP | 2,848 | $398.9K | 0.01% | +10.0% | Added |
| Pictet & Cie (Europe) SA | 2,866 | $401.5K | 0.01% | +40+1.4% | Added |
| Humankind Investments LLC | 2,867 | $401.6K | 0.09% | −172−5.7% | Reduced |
| Waterfront Wealth Inc. | 2,731 | $402.3K | 0.08% | +2,731 | New |
| Massachusetts Wealth Management | 2,874 | $402.6K | 0.20% | 00.0% | Unchanged |
| Applied Finance Capital Management, LLC | 2,878 | $403.1K | 0.03% | −825−22.3% | Reduced |
| Hunter Associates Investment Management LLC | 2,886 | $404.0K | 0.06% | −50−1.7% | Reduced |
| Arkadios Wealth Advisors | 2,896 | $405.7K | 0.01% | −107−3.6% | Reduced |
| Tower Trust & Investment Co | 2,900 | $406.2K | 0.27% | +5+0.2% | Added |
| Chicago Partners Investment Group LLC | 2,724 | $406.2K | 0.01% | +366+15.5% | Added |
| Wedmont Private Capital | 2,680 | $407.9K | 0.02% | +490+22.4% | Added |
| J. L. Bainbridge & Co., Inc. | 2,969 | $415.9K | 0.04% | −119,376−97.6% | Reduced |
| David Loasby | 2,803 | $426.6K | 0.03% | −35−1.2% | Reduced |
| Horizon Kinetics Asset Management LLC | 3,119 | $436.9K | 0.01% | +81+2.7% | Added |
| Alps Advisors Inc | 3,143 | $440.3K | 0.00% | +612+24.2% | Added |
| RDA Financial Network | 3,200 | $448.3K | 0.11% | 00.0% | Unchanged |
| MQS Management LLC | 3,206 | $449.1K | 0.26% | −611−16.0% | Reduced |
| Beacon Pointe Advisors, LLC | 3,224 | $451.6K | 0.00% | +3,224 | New |
| Panagora Asset Management Inc | 3,231 | $452.6K | 0.00% | +99+3.2% | Added |
| Sompo Asset Management Co., Ltd. | 3,240 | $453.9K | 0.08% | +3,240 | New |
| Vestcor Inc | 3,246 | $455.0K | 0.01% | 00.0% | Unchanged |
| Sax Wealth Advisors, LLC | 3,303 | $462.7K | 0.02% | +15+0.5% | Added |
| APG Asset Management US Inc. | 3,010 | $464.2K | 0.00% | 00.0% | Unchanged |
| EntryPoint Capital, LLC | 3,319 | $464.9K | 0.18% | +258+8.4% | Added |
| Blackhawk Capital Partners LLC. | 3,325 | $465.8K | 0.18% | +113+3.5% | Added |
| GTS Securities LLC | 3,340 | $467.9K | 0.02% | +3,340 | New |
| Virtus Investment Advisers, Inc. | 3,359 | $470.5K | 0.13% | 00.0% | Unchanged |
| South Dakota Investment Council | 3,413 | $478.0K | 0.01% | −200−5.5% | Reduced |
| Savant Capital, LLC | 3,414 | $478.3K | 0.00% | +405+13.5% | Added |
| Savvy Advisors, Inc. | 3,438 | $481.6K | 0.02% | +373+12.2% | Added |
| Everence Capital Management Inc | 3,450 | $483.0K | 0.03% | −2,240−39.4% | Reduced |
| Park Avenue Securities LLC | 3,447 | $483.0K | 0.00% | +244+7.6% | Added |
| Tower Research Capital LLC (TRC) | 3,475 | $486.8K | 0.01% | +561+19.3% | Added |
| STRS Ohio | 3,493 | $489.3K | 0.00% | +10.0% | Added |
| Siemens Fonds Invest GmbH | 3,521 | $493.2K | 0.03% | −19−0.5% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 3,530 | $494.3K | 0.00% | +671+23.5% | Added |
| Ironwood Financial, llc | 3,543 | $496.3K | 0.09% | +8+0.2% | Added |
| QRG Capital Management, Inc. | 3,571 | $500.2K | 0.01% | −411−10.3% | Reduced |
| NorthRock Partners, LLC | 3,596 | $503.7K | 0.01% | +480+15.4% | Added |
| Crossmark Global Holdings, Inc. | 3,658 | $512.4K | 0.01% | −282−7.2% | Reduced |
| Court Place Advisors, LLC | 3,660 | $512.7K | 0.15% | −580−13.7% | Reduced |
| Tiaa Trust, National Association | 3,702 | $518.6K | 0.00% | −741−16.7% | Reduced |
| Prime Capital Investment Advisors, LLC | 3,751 | $525.4K | 0.01% | −304−7.5% | Reduced |
| Sanctuary Advisors, LLC | 3,797 | $531.9K | 0.00% | +616+19.4% | Added |
| Skopos Labs, Inc. | 4,256 | $536.6K | 0.07% | +20.0% | Added |
| Wetherby Asset Management Inc | 3,832 | $536.8K | 0.02% | −352−8.4% | Reduced |
| Kentucky Retirement Systems Insurance Trust Fund | 3,844 | $538.5K | 0.04% | −117−3.0% | Reduced |
| Roberts Glore & Co Inc | 3,929 | $550.4K | 0.15% | −415−9.6% | Reduced |
| Summit Wealth Group LLC | 2,146 | $551.5K | 0.08% | +2,146 | New |
| Farmers & Merchants Investments Inc | 3,942 | $552.2K | 0.02% | −5−0.1% | Reduced |
| Ascent Group, LLC | 3,948 | $553.0K | 0.02% | +1,234+45.5% | Added |
| MUFG Securities Americas Inc. | 3,954 | $553.9K | 0.04% | +707+21.8% | Added |
| Stevens Capital Management LP | 3,967 | $556.0K | 0.07% | +3,967 | New |
| Texas Yale Capital Corp. | 3,987 | $558.5K | 0.02% | 00.0% | Unchanged |
| Wahed Invest LLC | 3,996 | $559.8K | 0.08% | +24+0.6% | Added |
| Cohen Klingenstein LLC | 4,000 | $560.3K | 0.02% | 00.0% | Unchanged |
| HB Wealth Management, LLC | 4,089 | $572.8K | 0.00% | +1,377+50.8% | Added |
| Pinnacle Associates Ltd | 4,148 | $581.0K | 0.01% | −371−8.2% | Reduced |
| Bellevue Group AG | 4,213 | $590.2K | 0.01% | +3,811+948.0% | Added |
| Parallel Advisors, LLC | 4,223 | $591.6K | 0.01% | −131−3.0% | Reduced |
| Intech Investment Management LLC | 4,273 | $598.6K | 0.01% | −258−5.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 4,341 | $608.0K | 0.00% | +909+26.5% | Added |
| Signaturefd, LLC | 4,342 | $608.3K | 0.01% | −229−5.0% | Reduced |
| GAMMA Investing LLC | 4,343 | $608.4K | 0.03% | +756+21.1% | Added |
| Meeder Advisory Services, Inc. | 4,374 | $612.7K | 0.03% | +165+3.9% | Added |
| Integrated Wealth Concepts LLC | 4,387 | $614.5K | 0.01% | +698+18.9% | Added |
| HRT Financial LP | 4,446 | $622.0K | 0.00% | −33,830−88.4% | Reduced |
| Private Advisor Group, LLC | 4,467 | $625.7K | 0.00% | +229+5.4% | Added |
| First County Bank | 4,477 | $627.1K | 0.32% | 00.0% | Unchanged |
| Coldstream Capital Management Inc | 4,480 | $627.6K | 0.01% | +1,234+38.0% | Added |
| Systematic Financial Management LP | 4,670 | $654.2K | 0.02% | 00.0% | Unchanged |
| Northwestern Mutual Investment Management Company, LLC | 4,673 | $654.6K | 0.01% | −10.0% | Reduced |
| Lifeworks Advisors, LLC | 4,681 | $655.7K | 0.09% | −16−0.3% | Reduced |
| Ci Investments Inc. | 4,682 | $656.0K | 0.00% | −289−5.8% | Reduced |
| Brown Brothers Harriman & Co | 4,696 | $657.8K | 0.00% | −427−8.3% | Reduced |
| Allstate Corp | 4,700 | $658.4K | 0.02% | +4,700 | New |
| Davis Investment Partners, LLC | 4,303 | $663.6K | 0.23% | +4,303 | New |
| Sig Brokerage, LP | 4,781 | $669.7K | 0.17% | +1,402+41.5% | Added |
| Crowley Wealth Management, Inc. | 4,810 | $673.8K | 0.54% | −100−2.0% | Reduced |
| Brinker Capital Investments, LLC | 4,828 | $676.3K | 0.01% | −3,759−43.8% | Reduced |
| Ellevest, Inc. | 4,895 | $685.7K | 0.10% | +3,244+196.5% | Added |
| Plato Investment Management Ltd | 4,939 | $686.6K | 0.05% | 00.0% | Unchanged |
| Vident Advisory, LLC | 4,997 | $700.0K | 0.01% | −67−1.3% | Reduced |
| Caption Management, LLC | 5,000 | $700.4K | 0.04% | −6,000−54.5% | Reduced |
| Penserra Capital Management LLC | 5,045 | $706.0K | 0.01% | +5,033+41,941.7% | Added |
| Unison Advisors LLC | 5,078 | $711.3K | 0.06% | −249−4.7% | Reduced |
| Spears Abacus Advisors LLC | 5,079 | $711.5K | 0.01% | +19+0.4% | Added |
| Bayesian Capital Management, LP | 5,100 | $714.4K | 0.15% | +5,100 | New |
| Rockefeller Capital Management L.P. | 5,175 | $724.9K | 0.00% | +5,175 | New |
| Annis Gardner Whiting Capital Advisors, LLC | 5,178 | $725.3K | 0.15% | +369+7.7% | Added |
| Omers Administration Corp | 5,180 | $725.6K | 0.01% | 00.0% | Unchanged |