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 |
|---|---|---|---|---|---|
| Invesco Ltd. | 2,418,127 | $338.7M | 0.05% | +98,001+4.2% | Added |
| Point72 Asset Management, L.P. | 3,872,901 | $542.5M | 1.18% | +41,174+1.1% | Added |
| Geode Capital Management, LLC | 4,068,781 | $567.7M | 0.04% | +150,631+3.8% | Added |
| Wellington Management Group LLP | 4,246,504 | $594.9M | 0.10% | −551,916−11.5% | Reduced |
| State Street Corp | 7,319,749 | $1.03B | 0.04% | −149,058−2.0% | Reduced |
| BlackRock, Inc. | 14,763,952 | $2.07B | 0.04% | +1,208,486+8.9% | Added |
| Primecap Management Co | 14,954,697 | $2.09B | 1.60% | −847,425−5.4% | Reduced |
| Vanguard Group Inc | 17,289,235 | $2.42B | 0.04% | −1,4160.0% | Reduced |
| Rakuten Investment Management, Inc. | 198,572 | – | – | +198,572 | New |
| Compagnie Lombard Odier SCmA | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| AXA S.A. | 0 | $0 | 0.00% | −108,572−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −80,822−100.0% | Sold out |
| Seizert Capital Partners, LLC | 0 | $0 | 0.00% | −66,245−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −33,008−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −26,046−100.0% | Sold out |
| Mirae Asset Securities (USA) Inc. | 0 | $0 | 0.00% | −23,059−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −22,791−100.0% | Sold out |
| Andra AP-fonden | 0 | $0 | 0.00% | −22,400−100.0% | Sold out |
| Ikarian Capital, LLC | 0 | $0 | 0.00% | −21,516−100.0% | Sold out |
| Arlington Partners LLC | 0 | $0 | 0.00% | −20,417−100.0% | Sold out |
| PEAK6 LLC | 0 | $0 | 0.00% | −17,286−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −16,550−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −16,164−100.0% | Sold out |
| Qsemble Capital Management, LP | 0 | $0 | 0.00% | −13,909−100.0% | Sold out |
| Sprucegrove Investment Management Ltd | 0 | $0 | 0.00% | −13,310−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −11,083−100.0% | Sold out |
| MYDA Advisors LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Miracle Mile Advisors, LLC | 0 | $0 | 0.00% | −9,594−100.0% | Sold out |
| Fieldview Capital Management, LLC | 0 | $0 | 0.00% | −8,837−100.0% | Sold out |
| Dohj, LLC | 0 | $0 | 0.00% | −8,853−100.0% | Sold out |
| Cornercap Investment Counsel Inc | 0 | $0 | 0.00% | −7,894−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −6,667−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −6,318−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −6,000−100.0% | Sold out |
| Ontario Teachers Pension Plan Board | 0 | $0 | 0.00% | −5,786−100.0% | Sold out |
| V-Square Quantitative Management LLC | 0 | $0 | 0.00% | −4,679−100.0% | Sold out |
| Howard Capital Management Inc. | 0 | $0 | 0.00% | −4,442−100.0% | Sold out |
| ARGA Investment Management, LP | 0 | $0 | 0.00% | −4,133−100.0% | Sold out |
| Eqis Capital Management, Inc. | 0 | $0 | 0.00% | −3,144−100.0% | Sold out |
| Cornerstone Advisors, LLC | 0 | $0 | 0.00% | −3,100−100.0% | Sold out |
| Integrated Quantitative Investments LLC | 0 | $0 | 0.00% | −2,820−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −2,792−100.0% | Sold out |
| Fiduciary Trust Co | 0 | $0 | 0.00% | −2,754−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −2,681−100.0% | Sold out |
| DRW Securities, LLC | 0 | $0 | 0.00% | −2,578−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −2,512−100.0% | Sold out |
| Legacy Wealth Asset Management, LLC | 0 | $0 | 0.00% | −2,511−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −2,484−100.0% | Sold out |
| Maven Securities LTD | 0 | $0 | 0.00% | −2,404−100.0% | Sold out |
| Mutual Advisors, LLC | 0 | $0 | 0.00% | −1,780−100.0% | Sold out |
| Atomi Financial Group, Inc. | 0 | $0 | 0.00% | −1,800−100.0% | Sold out |
| Perpetual Ltd | 0 | $0 | 0.00% | −1,797−100.0% | Sold out |
| Valeo Financial Advisors, LLC | 0 | $0 | 0.00% | −1,794−100.0% | Sold out |
| MBB Public Markets I LLC | 0 | $0 | 0.00% | −1,729−100.0% | Sold out |
| Kennedy Investment Group | 0 | $0 | 0.00% | −1,615−100.0% | Sold out |
| Lighthouse Financial LLC | 0 | $0 | 0.00% | −1,600−100.0% | Sold out |
| Employees Retirement System of Texas | 0 | $0 | 0.00% | −1,467−100.0% | Sold out |
| New Age Alpha Advisors, LLC | 0 | $0 | 0.00% | −1,132−100.0% | Sold out |
| Raiffeisen Bank International AG | 0 | $0 | 0.00% | −822−100.0% | Sold out |
| GeoWealth Management, LLC | 0 | $0 | 0.00% | −643−100.0% | Sold out |
| Ofi Invest Asset Management | 0 | $0 | 0.00% | −750−100.0% | Sold out |
| NewSquare Capital LLC | 0 | $0 | 0.00% | −244−100.0% | Sold out |
| Mount Yale Investment Advisors, LLC | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Opal Wealth Advisors, LLC | 0 | $0 | 0.00% | −186−100.0% | Sold out |
| Livelsberger Financial Advisory | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −70−100.0% | Sold out |
| Kestra Investment Management, LLC | 0 | $0 | 0.00% | −62−100.0% | Sold out |
| Wood Tarver Financial Group, LLC | 0 | $0 | 0.00% | −44−100.0% | Sold out |
| Whipplewood Advisors, LLC | 0 | $0 | 0.00% | −32−100.0% | Sold out |
| Bellwether Advisors, LLC | 0 | $0 | 0.00% | −26−100.0% | Sold out |
| Chilton Capital Management LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| GFG Capital, LLC | 0 | $0 | 0.00% | −16−100.0% | Sold out |
| Stone House Investment Management, LLC | 0 | $0 | 0.00% | −14−100.0% | Sold out |
| New England Capital Financial Advisors LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| Kayne Anderson Rudnick Investment Management LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Evolution Wealth Management Inc. | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Sierra Ocean, LLC | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| WealthTrak Capital Management LLC | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Riggs Asset Managment Co. Inc. | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Stephens Consulting, LLC | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Curio Wealth, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Valued Wealth Advisors LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Norges Bank | – | – | – | – | Not filed |
| CIBC World Markets Corp | – | – | – | – | Not filed |
| E Fund Management Co., Ltd. | – | – | – | – | Not filed |
| EP Wealth Advisors, LLC | – | – | – | – | Not filed |
| Congress Wealth Management LLC | – | – | – | – | Not filed |
| Enterprise Bank & Trust Co | – | – | – | – | Not filed |
| Avantax Advisory Services, Inc. | – | – | – | – | Not filed |
| Financial Gravity Companies, Inc. | – | – | – | – | Not filed |
| First Horizon Advisors, Inc. | – | – | – | – | Not filed |
| Parkworth Wealth Management, Inc. | – | – | – | – | Not filed |