Who Holds Biogen (BIIB)? 1,041 Institutional Holders, Q2 2026
Managers with more than $100 million in US equities report their holdings on Form 13F within 45 days of each quarter end. Quarter ended 30 Jun 2026: 1,041 holders, $29.8 billion in total.
Largest holders
The 100 largest by value. Change in shares against Q1 2026.
| Manager | Shares | Value | Change | |
|---|---|---|---|---|
| FMR LLC | 18,217,239 | $3.9 billion | +42% | 13F |
| BlackRock, Inc. | 15,985,736 | $3.5 billion | +0% | 13F |
| PRIMECAP MANAGEMENT CO/CA/ | 15,154,606 | $3.3 billion | +3% | 13F |
| VANGUARD CAPITAL MANAGEMENT LLC | 9,651,117 | $2.1 billion | +1% | 13F |
| STATE STREET CORP | 7,344,327 | $1.6 billion | +2% | 13F |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6,604,936 | $1.4 billion | +1% | 13F |
| GEODE CAPITAL MANAGEMENT, LLC | 4,449,295 | $958 million | +2% | 13F |
| WELLINGTON MANAGEMENT GROUP LLP | 3,117,469 | $674 million | +5% | 13F |
| NORGES BANK | 2,580,033 | $557 million | New | 13F |
| MORGAN STANLEY | 2,411,271 | $521 million | +11% | 13F |
| AQR CAPITAL MANAGEMENT LLC | 1,936,859 | $417 million | +1% | 13F |
| JPMORGAN CHASE & CO | 1,823,140 | $395 million | -10% | 13F |
| Invesco Ltd. | 1,803,944 | $390 million | +3% | 13F |
| Amundi | 1,516,831 | $328 million | +92% | 13F |
| Legal & General Group Plc | 1,493,289 | $323 million | +11% | 13F |
| NORTHERN TRUST CORP | 1,429,490 | $309 million | -1% | 13F |
| Boston Partners | 1,263,429 | $273 million | -26% | 13F |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 1,255,168 | $271 million | -9% | 13F |
| GOLDMAN SACHS GROUP INC | 1,230,390 | $266 million | +17% | 13F |
| DIMENSIONAL FUND ADVISORS LP | 1,148,568 | $248 million | +6% | 13F |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1,117,663 | $241 million | -3% | 13F |
| BANK OF AMERICA CORP /DE/ | 1,116,228 | $241 million | -3% | 13F |
| UBS Group AG | 1,030,150 | $223 million | +97% | 13F |
| Alyeska Investment Group, L.P. | 932,374 | $201 million | +16% | 13F |
| DEUTSCHE BANK AG\ | 894,035 | $193 million | -16% | 13F |
| Pictet Asset Management Holding SA | 851,819 | $184 million | -7% | 13F |
| VANGUARD FIDUCIARY TRUST CO | 829,318 | $179 million | +0% | 13F |
| Robeco Institutional Asset Management B.V. | 791,092 | $171 million | +4% | 13F |
| FRED ALGER MANAGEMENT, LLC | 788,307 | $170 million | +8% | 13F |
| Bank of New York Mellon Corp | 773,619 | $167 million | -2% | 13F |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 744,892 | $163 million | +3% | 13F |
| CITIGROUP INC | 734,517 | $159 million | +47% | 13F |
| ROYAL BANK OF CANADA | 708,562 | $153 million | +33% | 13F |
| Employees Provident Fund Board | 704,196 | $152 million | +0% | 13F |
| FIRST TRUST ADVISORS LP | 682,021 | $147 million | +1% | 13F |
| AustralianSuper Pty Ltd | 672,723 | $145 million | +9% | 13F |
| Artemis Investment Management LLP | 570,974 | $123 million | 0% | 13F |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 540,001 | $117 million | +3% | 13F |
| HSBC HOLDINGS PLC | 527,866 | $114 million | +14% | 13F |
| Caisse de depot et placement du Quebec | 510,194 | $110 million | -2% | 13F |
| CITADEL ADVISORS LLC | 418,356 | $90 million | +203% | 13F |
| Swiss National Bank | 413,900 | $89 million | -4% | 13F |
| National Pension Service | 406,064 | $88 million | +1% | 13F |
| BNP PARIBAS FINANCIAL MARKETS | 387,542 | $84 million | -18% | 13F |
| Candriam S.C.A. | 384,326 | $83 million | +1% | 13F |
| Mitsubishi UFJ Asset Management Co., Ltd. | 358,823 | $78 million | +7% | 13F |
| Sumitomo Mitsui Trust Group, Inc. | 346,617 | $75 million | -3% | 13F |
| VICTORY CAPITAL MANAGEMENT INC | 343,419 | $74 million | +7% | 13F |
| FIL Ltd | 342,623 | $74 million | +8% | 13F |
| Fisher Asset Management, LLC | 338,018 | $73 million | +8% | 13F |
| Vanguard Global Advisers, LLC | 335,936 | $73 million | -2% | 13F |
| California Public Employees Retirement System | 329,106 | $71 million | -3% | 13F |
| Swedbank AB | 320,622 | $69 million | +11% | 13F |
| Nuveen, LLC | 317,204 | $69 million | -12% | 13F |
| VANGUARD ASSET MANAGEMENT, Ltd | 284,376 | $61 million | +14% | 13F |
| Patient Capital Management, LLC | 283,697 | $61 million | -25% | 13F |
| Gotham Asset Management, LLC | 279,900 | $60 million | -6% | 13F |
| CAUSEWAY CAPITAL MANAGEMENT LLC | 278,283 | $60 million | -1% | 13F |
| PERCEPTIVE ADVISORS LLC | 276,173 | $60 million | New | 13F |
| Balyasny Asset Management L.P. | 265,090 | $57 million | -59% | 13F |
| RHUMBLINE ADVISERS | 262,979 | $57 million | -5% | 13F |
| BARCLAYS PLC | 247,157 | $53 million | -55% | 13F |
| VOYA INVESTMENT MANAGEMENT LLC | 246,782 | $53 million | +352% | 13F |
| AEGON ASSET MANAGEMENT UK Plc | 241,101 | $52 million | -7% | 13F |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 234,138 | $51 million | +9% | 13F |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 220,009 | $48 million | 0% | 13F |
| KLP KAPITALFORVALTNING AS | 199,177 | $43 million | +0% | 13F |
| Man Group plc | 196,222 | $42 million | -38% | 13F |
| PANAGORA ASSET MANAGEMENT INC | 186,929 | $40 million | +32% | 13F |
| NISSAY ASSET MANAGEMENT CORP /JAPAN | 185,301 | $40 million | +523% | 13F |
| PRINCIPAL FINANCIAL GROUP INC | 184,450 | $40 million | -1% | 13F |
| ALLIANCEBERNSTEIN L.P. | 214,975 | $39 million | +1% | 13F |
| JUPITER ASSET MANAGEMENT LTD | 160,057 | $35 million | +2141% | 13F |
| Quantinno Capital Management LP | 151,977 | $33 million | +31% | 13F |
| Allianz Asset Management GmbH | 178,012 | $33 million | 0% | 13F |
| LETKO, BROSSEAU & ASSOCIATES INC | 146,562 | $32 million | -3% | 13F |
| Portolan Capital Management, LLC | 142,856 | $31 million | +21% | 13F |
| Palo Alto Investors LP | 140,279 | $30 million | 0% | 13F |
| Walleye Trading LLC | 139,253 | $30 million | +40% | 13F |
| Creative Planning | 138,613 | $30 million | +18% | 13F |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 138,260 | $30 million | -2% | 13F |
| FRANKLIN RESOURCES INC | 137,436 | $30 million | -5% | 13F |
| Nippon Life Global Investors Americas, Inc. | 137,220 | $30 million | +309% | 13F |
| Russell Investments Group, Ltd. | 133,894 | $29 million | -1% | 13F |
| IEQ CAPITAL, LLC | 132,142 | $29 million | -13% | 13F |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 129,599 | $28 million | -61% | 13F |
| WELLS FARGO & COMPANY/MN | 128,664 | $28 million | +1% | 13F |
| Aberdeen Group plc | 128,227 | $28 million | -15% | 13F |
| BANK OF MONTREAL /CAN/ | 124,267 | $27 million | +34% | 13F |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | 121,311 | $26 million | -2% | 13F |
| AMERICAN CENTURY COMPANIES INC | 114,152 | $25 million | +9% | 13F |
| Woodline Partners LP | 112,463 | $24 million | +3% | 13F |
| RAYMOND JAMES FINANCIAL INC | 108,174 | $23 million | +12% | 13F |
| AVIVA PLC | 108,052 | $23 million | +12% | 13F |
| NATIONAL BANK OF CANADA /FI/ | 107,416 | $23 million | +36% | 13F |
| Eurizon Capital SGR S.p.A. | 102,594 | $22 million | -21% | 13F |
| ADAMS DIVERSIFIED EQUITY FUND, INC. | 100,300 | $22 million | +0% | 13F |
| NEW YORK STATE COMMON RETIREMENT FUND | 100,145 | $22 million | +0% | 13F |
| Integral Health Asset Management, LLC | 100,000 | $22 million | +67% | 13F |
| Illinois Municipal Retirement Fund | 99,303 | $21 million | +11% | 13F |
Questions and answers
- How many institutions hold Biogen?
- 1,041 managers reported Biogen on Form 13F for the quarter ended 30 June 2026, against 1,012 the quarter before.
- Who is the largest institutional holder of Biogen?
- FMR LLC, with 18,217,239 shares worth $3.9 billion on its 13F for Q2 2026.
- How many institutions bought or sold out of Biogen in Q2 2026?
- 126 managers reported a new position and 97 reported none after holding it the quarter before.
Source: SEC EDGAR, Form 13F (public domain). Counts and values as filed. Cite this page: Tamarly Intelligence, "Who holds Biogen, Q2 2026", https://app.tamarly.ai/holders/biogen, built from SEC EDGAR.
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