BiogenBIIB
13F holders, Q2 2026 (June 30)1,046holders +32
111new positions
81sold out
7famous investors
$215.89avg. 13F price*
At the end of Q2 2026, 1,046 institutions reported holding Biogen Inc. (BIIB) in their 13F filings, up 32 from Q1 2026. 111 opened new positions and 81 sold out. The largest holders were FMR LLC ($3.9B), BlackRock, Inc. ($3.5B) and Primecap Management Co. ($3.3B). 7 famous investors held it, including Cliff Asness (0.1% of AQR Capital Management's portfolio), Joel Greenblatt (0.1% of Gotham Asset Management's portfolio) and Ken Griffin (0.1% of Citadel Advisors's portfolio).
- Company
- Biogen Inc.
- Sector
- Health Care
- CUSIP
- 09062X103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 111 | $249.8M |
| Exits | 81 | $218.2M |
All 13F filers, Q1 2026 → Q2 2026: 13,417,395 shares bought and 8,600,332 shares sold, net +4,817,063 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,046 holders
| FMR LLC | 0.17% | Add +42.2% | 18,217,239 | $3.9B |
| BlackRock, Inc. | 0.05% | Add +0.1% | 15,985,736 | $3.5B |
| Primecap Management Co. | 1.94% | Add +2.7% | 15,154,606 | $3.3B |
| Vanguard Capital Management LLC | 0.04% | Add +1.2% | 9,651,117 | $2.1B |
| State Street Corp. | 0.05% | Add +2.5% | 7,344,327 | $1.6B |
| Vanguard Portfolio Management LLC | 0.06% | Add +1.1% | 6,604,936 | $1.4B |
| Geode Capital Management, LLC | 0.05% | Add +2.5% | 4,449,295 | $957.9M |
| Wellington Management Group LLP | 0.12% | Add +5.3% | 3,117,469 | $673.6M |
| Norges Bank | 0.06% | — | 2,580,033 | $557.4M |
| Morgan Stanley | 0.03% | Add +11.1% | 2,411,271 | $521.0M |
| AQR Capital Management | 0.15% | Add +0.7% | 1,936,859 | $416.9M |
| JPMorgan Chase & Co. | 0.02% | Reduce -9.6% | 1,823,140 | $394.9M |
| Invesco Ltd. | 0.03% | Add +3.4% | 1,803,944 | $389.8M |
| Amundi | 0.08% | Add +91.8% | 1,516,831 | $327.7M |
| Legal & General Group Plc | 0.07% | Add +10.6% | 1,493,289 | $322.6M |
| Northern Trust Corp. | 0.04% | Reduce -1.2% | 1,429,490 | $308.9M |
| Boston Partners | 0.24% | Reduce -25.7% | 1,263,429 | $272.8M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.05% | Reduce -8.9% | 1,255,168 | $271.2M |
| Goldman Sachs Group Inc. | 0.03% | Add +17.1% | 1,230,390 | $265.8M |
| Dimensional Fund Advisors LP | 0.04% | Add +6.4% | 1,148,568 | $248.2M |
| Pacer Advisors, Inc. | 0.63% | Add +70.0% | 1,122,981 | $242.6M |
| Charles Schwab Investment Management Inc. | 0.03% | Reduce -2.8% | 1,117,663 | $241.5M |
| Bank of America Corp. | 0.02% | Reduce -3.5% | 1,116,228 | $241.2M |
| UBS Group AG | 0.04% | Add +96.8% | 1,030,150 | $222.6M |
| Alyeska Investment Group, L.P. | 0.52% | Add +15.8% | 932,374 | $201.4M |
| Deutsche Bank AG | 0.06% | Reduce -16.0% | 894,035 | $193.2M |
| Pictet Asset Management Holding SA | 0.18% | Reduce -6.7% | 851,819 | $184.1M |
| Vanguard Fiduciary Trust Co. | 0.04% | Add +0.5% | 829,318 | $179.2M |
| Robeco Institutional Asset Management B.V. | 0.21% | Add +3.7% | 791,092 | $170.9M |
| Fred Alger Management, LLC | 0.57% | Add +7.5% | 788,307 | $170.3M |
| T. Rowe Price Associates Inc. | 0.02% | Add +15.2% | 774,283 | $167.3M |
| Bank of New York Mellon Corp | 0.03% | Reduce -1.9% | 773,619 | $167.1M |
| Massachusetts Financial Services Co. | 0.05% | Add +3.4% | 744,892 | $163.1M |
| Citigroup Inc. | 0.07% | Add +46.8% | 734,517 | $158.7M |
| Royal Bank of Canada | 0.03% | Add +33.3% | 708,562 | $153.1M |
| Employees Provident Fund Board | 0.87% | No change | 704,196 | $152.1M |
| First Trust Advisors LP | 0.09% | Add +1.2% | 682,021 | $147.4M |
| AustralianSuper Pty Ltd | 0.63% | Add +9.2% | 672,723 | $145.3M |
| Artemis Investment Management LLP | 1.10% | Reduce -0.1% | 570,974 | $123.4M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.22% | Add +3.4% | 540,001 | $116.7M |
| HSBC Holdings PLC | 0.05% | Add +13.8% | 527,866 | $114.0M |
| Caisse de depot et placement du Quebec | 0.16% | Reduce -1.6% | 510,194 | $110.2M |
| LSV Asset Management | 0.17% | Add +33.0% | 444,049 | $95.9M |
| Citadel Advisors | 0.05% | Add +202.9% | 418,356 | $90.4M |
| Swiss National Bank | 0.05% | Reduce -3.9% | 413,900 | $89.4M |
| National Pension Service | 0.06% | Add +1.1% | 406,064 | $87.7M |
| BNP Paribas Financial Markets | 0.04% | Reduce -17.7% | 387,542 | $83.7M |
| Candriam S.C.A. | 0.38% | Add +0.7% | 384,326 | $83.0M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.04% | Add +7.3% | 358,823 | $77.5M |
| Sumitomo Mitsui Trust Group, Inc. | 0.04% | Reduce -2.7% | 346,617 | $74.9M |
| Victory Capital Management Inc. | 0.04% | Add +7.1% | 343,419 | $74.2M |
| FIL Ltd | 0.05% | Add +7.7% | 342,623 | $74.0M |
| Fisher Asset Management | 0.02% | Add +8.1% | 338,018 | $73.0M |
| Vanguard Global Advisers, LLC | 0.03% | Reduce -2.3% | 335,936 | $72.6M |
| California Public Employees Retirement System | 0.04% | Reduce -3.5% | 329,106 | $71.1M |
| Swedbank AB | 0.06% | Add +10.6% | 320,622 | $69.3M |
| Nuveen, LLC | 0.02% | Reduce -11.6% | 317,204 | $68.5M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.04% | Add +13.8% | 284,376 | $61.4M |
| Patient Capital Management, LLC | 2.04% | Reduce -25.3% | 283,697 | $61.3M |
| Gotham Asset Management | 0.14% | Reduce -6.2% | 279,900 | $60.5M |
| KBC Group NV | 0.13% | Add +18.7% | 278,652 | $60.2M |
| Causeway Capital Management LLC | 0.65% | Reduce -0.9% | 278,283 | $60.1M |
| Perceptive Advisors LLC | 0.93% | New | 276,173 | $59.7M |
| Balyasny Asset Management L.P. | 0.11% | Reduce -59.2% | 265,090 | $57.3M |
| Rhumbline Advisers | 0.04% | Reduce -4.5% | 262,979 | $56.8M |
| Barclays PLC | 0.02% | Reduce -55.2% | 247,157 | $53.4M |
| Voya Investment Management LLC | 0.05% | Add +352.3% | 246,782 | $53.3M |
| AEGON ASSET MANAGEMENT UK Plc | 0.56% | Reduce -6.8% | 241,101 | $52.1M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.05% | Add +8.7% | 234,138 | $50.6M |
| California State Teachers Retirement System | 0.04% | Reduce -0.3% | 220,009 | $47.5M |
| KLP Kapitalforvaltning As | 0.14% | No change | 199,177 | $43.0M |
| Man Group plc | 0.08% | Reduce -38.4% | 196,222 | $42.4M |
| Panagora Asset Management Inc. | 0.12% | Add +31.6% | 186,929 | $40.4M |
| Nissay Asset Management Corp. /Japan | 0.17% | Add +522.6% | 185,301 | $40.0M |
| Principal Financial Group Inc. | 0.02% | Reduce -1.4% | 184,450 | $39.9M |
| Alliancebernstein L.P. | 0.01% | Add +1.0% | 214,975 | $39.4M |
| Allianz Asset Management GmbH | 0.04% | Add +1.1% | 180,079 | $38.9M |
| Jupiter Asset Management Ltd. | 0.17% | Add +2141.4% | 160,057 | $34.6M |
| Quantinno Capital Management LP | 0.04% | Add +30.6% | 151,977 | $32.8M |
| Treasurer of the State of North Carolina | 0.08% | Add +97.7% | 148,629 | $32.1M |
| Letko, Brosseau & Associates Inc. | 0.47% | Reduce -2.9% | 146,562 | $31.7M |
| Portolan Capital Management, LLC | 1.16% | Add +20.6% | 142,856 | $30.9M |
| Palo Alto Investors LP | 4.19% | Reduce -0.3% | 140,279 | $30.3M |
| Walleye Trading LLC | 0.42% | Add +39.9% | 139,253 | $30.1M |
| Creative Planning | 0.02% | Add +18.2% | 138,613 | $29.9M |
| O'shaughnessy Asset Management, LLC | 0.14% | Reduce -2.2% | 138,260 | $29.9M |
| Franklin Resources Inc. | 0.01% | Reduce -4.8% | 137,436 | $29.7M |
| Nippon Life Global Investors Americas, Inc. | 1.18% | Add +308.8% | 137,220 | $29.6M |
| Russell Investments Group, Ltd. | 0.03% | Reduce -1.4% | 133,894 | $29.0M |
| Ieq Capital, LLC | 0.13% | Reduce -13.1% | 132,142 | $28.6M |
| Thompson Siegel & Walmsley LLC | 0.51% | Reduce -47.5% | 130,512 | $28.2M |
| Lord, Abbett & Co. LLC | 0.08% | New | 130,184 | $28.1M |
| Acadian Asset Management LLC | 0.03% | Reduce -47.7% | 129,878 | $28.1M |
| Adage Capital Partners Gp, L.L.C. | 0.04% | Reduce -61.1% | 129,599 | $28.0M |
| Wells Fargo & Company | 0.00% | Add +1.2% | 128,664 | $27.8M |
| Aberdeen Group plc | 0.04% | Reduce -15.2% | 128,227 | $27.7M |
| Bank of Montreal | 0.01% | Add +34.0% | 124,267 | $26.8M |
| CANADA LIFE ASSURANCE Co | 0.04% | Add +0.4% | 122,258 | $26.4M |
| State Board of Administration of Florida Retirement System | 0.04% | Reduce -2.3% | 121,311 | $26.2M |
| American Century Companies Inc. | 0.01% | Add +8.9% | 114,152 | $24.7M |
"% of holder's portfolio" is BIIB's weight in each manager's 13F, not the share of Biogen Inc. the manager owns.