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 |
|---|---|---|---|---|---|
| United Capital Financial Advisers, LLC | 5,433 | $761.1K | 0.01% | +411+8.2% | Added |
| Guardian Investment Management | 5,400 | $756.4K | 0.66% | +100+1.9% | Added |
| Jane Street Group, LLC | 5,340 | $748.0K | 0.00% | −27,701−83.8% | Reduced |
| Inceptionr LLC | 5,302 | $742.7K | 0.18% | −4,198−44.2% | Reduced |
| CAPROCK Group, Inc. | 5,611 | $741.9K | 0.02% | +5,611 | New |
| Empirical Finance, LLC | 5,286 | $740.5K | 0.04% | +53+1.0% | Added |
| Frank, Rimerman Advisors LLC | 5,181 | $725.8K | 0.05% | −187−3.5% | Reduced |
| Omers Administration Corp | 5,180 | $725.6K | 0.01% | 00.0% | Unchanged |
| NJ State Employees Deferred Compensation Plan | 5,180 | $725.6K | 0.08% | +2,680+107.2% | Added |
| Annis Gardner Whiting Capital Advisors, LLC | 5,178 | $725.3K | 0.15% | +369+7.7% | Added |
| Rockefeller Capital Management L.P. | 5,175 | $724.9K | 0.00% | +5,175 | New |
| Bayesian Capital Management, LP | 5,100 | $714.4K | 0.15% | +5,100 | New |
| Spears Abacus Advisors LLC | 5,079 | $711.5K | 0.01% | +19+0.4% | Added |
| Unison Advisors LLC | 5,078 | $711.3K | 0.06% | −249−4.7% | Reduced |
| Penserra Capital Management LLC | 5,045 | $706.0K | 0.01% | +5,033+41,941.7% | Added |
| Caption Management, LLC | 5,000 | $700.4K | 0.04% | −6,000−54.5% | Reduced |
| Vident Advisory, LLC | 4,997 | $700.0K | 0.01% | −67−1.3% | Reduced |
| Plato Investment Management Ltd | 4,939 | $686.6K | 0.05% | 00.0% | Unchanged |
| Ellevest, Inc. | 4,895 | $685.7K | 0.10% | +3,244+196.5% | Added |
| Brinker Capital Investments, LLC | 4,828 | $676.3K | 0.01% | −3,759−43.8% | Reduced |
| Crowley Wealth Management, Inc. | 4,810 | $673.8K | 0.54% | −100−2.0% | Reduced |
| Sig Brokerage, LP | 4,781 | $669.7K | 0.17% | +1,402+41.5% | Added |
| Davis Investment Partners, LLC | 4,303 | $663.6K | 0.23% | +4,303 | New |
| Allstate Corp | 4,700 | $658.4K | 0.02% | +4,700 | New |
| Brown Brothers Harriman & Co | 4,696 | $657.8K | 0.00% | −427−8.3% | Reduced |
| Ci Investments Inc. | 4,682 | $656.0K | 0.00% | −289−5.8% | Reduced |
| Lifeworks Advisors, LLC | 4,681 | $655.7K | 0.09% | −16−0.3% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 4,673 | $654.6K | 0.01% | −10.0% | Reduced |
| Systematic Financial Management LP | 4,670 | $654.2K | 0.02% | 00.0% | Unchanged |
| Coldstream Capital Management Inc | 4,480 | $627.6K | 0.01% | +1,234+38.0% | Added |
| First County Bank | 4,477 | $627.1K | 0.32% | 00.0% | Unchanged |
| Private Advisor Group, LLC | 4,467 | $625.7K | 0.00% | +229+5.4% | Added |
| HRT Financial LP | 4,446 | $622.0K | 0.00% | −33,830−88.4% | Reduced |
| Integrated Wealth Concepts LLC | 4,387 | $614.5K | 0.01% | +698+18.9% | Added |
| Meeder Advisory Services, Inc. | 4,374 | $612.7K | 0.03% | +165+3.9% | Added |
| GAMMA Investing LLC | 4,343 | $608.4K | 0.03% | +756+21.1% | Added |
| Signaturefd, LLC | 4,342 | $608.3K | 0.01% | −229−5.0% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 4,341 | $608.0K | 0.00% | +909+26.5% | Added |
| Intech Investment Management LLC | 4,273 | $598.6K | 0.01% | −258−5.7% | Reduced |
| Parallel Advisors, LLC | 4,223 | $591.6K | 0.01% | −131−3.0% | Reduced |
| Bellevue Group AG | 4,213 | $590.2K | 0.01% | +3,811+948.0% | Added |
| Pinnacle Associates Ltd | 4,148 | $581.0K | 0.01% | −371−8.2% | Reduced |
| HB Wealth Management, LLC | 4,089 | $572.8K | 0.00% | +1,377+50.8% | Added |
| Cohen Klingenstein LLC | 4,000 | $560.3K | 0.02% | 00.0% | Unchanged |
| Wahed Invest LLC | 3,996 | $559.8K | 0.08% | +24+0.6% | Added |
| Texas Yale Capital Corp. | 3,987 | $558.5K | 0.02% | 00.0% | Unchanged |
| Stevens Capital Management LP | 3,967 | $556.0K | 0.07% | +3,967 | New |
| MUFG Securities Americas Inc. | 3,954 | $553.9K | 0.04% | +707+21.8% | Added |
| Ascent Group, LLC | 3,948 | $553.0K | 0.02% | +1,234+45.5% | Added |
| Farmers & Merchants Investments Inc | 3,942 | $552.2K | 0.02% | −5−0.1% | Reduced |
| Summit Wealth Group LLC | 2,146 | $551.5K | 0.08% | +2,146 | New |
| Roberts Glore & Co Inc | 3,929 | $550.4K | 0.15% | −415−9.6% | Reduced |
| Kentucky Retirement Systems Insurance Trust Fund | 3,844 | $538.5K | 0.04% | −117−3.0% | Reduced |
| Wetherby Asset Management Inc | 3,832 | $536.8K | 0.02% | −352−8.4% | Reduced |
| Skopos Labs, Inc. | 4,256 | $536.6K | 0.07% | +20.0% | Added |
| Sanctuary Advisors, LLC | 3,797 | $531.9K | 0.00% | +616+19.4% | Added |
| Prime Capital Investment Advisors, LLC | 3,751 | $525.4K | 0.01% | −304−7.5% | Reduced |
| Tiaa Trust, National Association | 3,702 | $518.6K | 0.00% | −741−16.7% | Reduced |
| Court Place Advisors, LLC | 3,660 | $512.7K | 0.15% | −580−13.7% | Reduced |
| Crossmark Global Holdings, Inc. | 3,658 | $512.4K | 0.01% | −282−7.2% | Reduced |
| NorthRock Partners, LLC | 3,596 | $503.7K | 0.01% | +480+15.4% | Added |
| QRG Capital Management, Inc. | 3,571 | $500.2K | 0.01% | −411−10.3% | Reduced |
| Ironwood Financial, llc | 3,543 | $496.3K | 0.09% | +8+0.2% | Added |
| Wiley Bros.-Aintree Capital, LLC | 3,530 | $494.3K | 0.00% | +671+23.5% | Added |
| Siemens Fonds Invest GmbH | 3,521 | $493.2K | 0.03% | −19−0.5% | Reduced |
| STRS Ohio | 3,493 | $489.3K | 0.00% | +10.0% | Added |
| Tower Research Capital LLC (TRC) | 3,475 | $486.8K | 0.01% | +561+19.3% | 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 |
| Savvy Advisors, Inc. | 3,438 | $481.6K | 0.02% | +373+12.2% | Added |
| Savant Capital, LLC | 3,414 | $478.3K | 0.00% | +405+13.5% | Added |
| South Dakota Investment Council | 3,413 | $478.0K | 0.01% | −200−5.5% | Reduced |
| Virtus Investment Advisers, Inc. | 3,359 | $470.5K | 0.13% | 00.0% | Unchanged |
| GTS Securities LLC | 3,340 | $467.9K | 0.02% | +3,340 | New |
| Blackhawk Capital Partners LLC. | 3,325 | $465.8K | 0.18% | +113+3.5% | Added |
| EntryPoint Capital, LLC | 3,319 | $464.9K | 0.18% | +258+8.4% | Added |
| APG Asset Management US Inc. | 3,010 | $464.2K | 0.00% | 00.0% | Unchanged |
| Sax Wealth Advisors, LLC | 3,303 | $462.7K | 0.02% | +15+0.5% | Added |
| Vestcor Inc | 3,246 | $455.0K | 0.01% | 00.0% | Unchanged |
| Sompo Asset Management Co., Ltd. | 3,240 | $453.9K | 0.08% | +3,240 | New |
| Panagora Asset Management Inc | 3,231 | $452.6K | 0.00% | +99+3.2% | Added |
| Beacon Pointe Advisors, LLC | 3,224 | $451.6K | 0.00% | +3,224 | New |
| MQS Management LLC | 3,206 | $449.1K | 0.26% | −611−16.0% | Reduced |
| RDA Financial Network | 3,200 | $448.3K | 0.11% | 00.0% | Unchanged |
| Alps Advisors Inc | 3,143 | $440.3K | 0.00% | +612+24.2% | Added |
| Horizon Kinetics Asset Management LLC | 3,119 | $436.9K | 0.01% | +81+2.7% | Added |
| David Loasby | 2,803 | $426.6K | 0.03% | −35−1.2% | Reduced |
| J. L. Bainbridge & Co., Inc. | 2,969 | $415.9K | 0.04% | −119,376−97.6% | Reduced |
| Wedmont Private Capital | 2,680 | $407.9K | 0.02% | +490+22.4% | Added |
| Chicago Partners Investment Group LLC | 2,724 | $406.2K | 0.01% | +366+15.5% | Added |
| Tower Trust & Investment Co | 2,900 | $406.2K | 0.27% | +5+0.2% | Added |
| Arkadios Wealth Advisors | 2,896 | $405.7K | 0.01% | −107−3.6% | Reduced |
| Hunter Associates Investment Management LLC | 2,886 | $404.0K | 0.06% | −50−1.7% | Reduced |
| Applied Finance Capital Management, LLC | 2,878 | $403.1K | 0.03% | −825−22.3% | Reduced |
| Massachusetts Wealth Management | 2,874 | $402.6K | 0.20% | 00.0% | Unchanged |
| Waterfront Wealth Inc. | 2,731 | $402.3K | 0.08% | +2,731 | New |
| Humankind Investments LLC | 2,867 | $401.6K | 0.09% | −172−5.7% | Reduced |
| Pictet & Cie (Europe) SA | 2,866 | $401.5K | 0.01% | +40+1.4% | Added |
| Forum Financial Management, LP | 2,848 | $398.9K | 0.01% | +10.0% | Added |
| Cim Investment Mangement Inc | 2,844 | $398.4K | 0.11% | −2,920−50.7% | Reduced |