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, Q1 2025
Institutional positions in Biogen Inc. as of Mar 31, 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
- 882
- +16 vs. Q4 2024
- Shares held
- 129.8M
- −2.03M (−1.5%) vs. Q4 2024
- Total value
- $17.7B
- −$2.41B (−11.9%) vs. Q4 2024
- New holders
- 123
- 331 more added
- Sold out
- 107
- 273 more reduced
13 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Retirement Systems of Alabama | 183,551 | $25.1M | 0.10% | −1,832−1.0% | Reduced |
| Candriam Luxembourg S.C.A. | 186,780 | $25.6M | 0.16% | −15,184−7.5% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 187,803 | $25.7M | 0.07% | +43,651+30.3% | Added |
| Hudson Bay Capital Management LP | 200,520 | $27.4M | 0.17% | −40,488−16.8% | Reduced |
| National Bank of Canada | 201,533 | $27.6M | 0.03% | +23,644+13.3% | Added |
| Palo Alto Investors LP | 204,923 | $28.0M | 5.34% | +14,775+7.8% | Added |
| Russell Investments Group, Ltd. | 207,649 | $28.4M | 0.04% | +85,886+70.5% | Added |
| Capital Fund Management S.A. | 213,015 | $29.1M | 0.37% | −27,328−11.4% | Reduced |
| Nomura Holdings Inc | 213,770 | $29.3M | 0.16% | −5,110−2.3% | Reduced |
| Arrowstreet Capital, Limited Partnership | 214,780 | $29.4M | 0.02% | +214,780 | New |
| Pictet Asset Management Holding SA | 217,530 | $30.0M | 0.03% | −76,163−25.9% | Reduced |
| ProShare Advisors LLC | 224,655 | $30.7M | 0.07% | +26,329+13.3% | Added |
| Alliancebernstein L.P. | 229,054 | $31.3M | 0.01% | +48,331+26.7% | Added |
| California State Teachers Retirement System | 230,535 | $31.5M | 0.04% | −2,783−1.2% | Reduced |
| Canada Pension Plan Investment Board | 230,804 | $31.6M | 0.03% | −30,358−11.6% | Reduced |
| Verition Fund Management LLC | 238,952 | $32.7M | 0.19% | +11,822+5.2% | Added |
| LSV Asset Management | 241,976 | $33.1M | 0.08% | +7,528+3.2% | Added |
| Thompson Siegel & Walmsley LLC | 257,456 | $35.2M | 0.60% | +257,456 | New |
| Susquehanna International Group, LLP | 268,372 | $36.7M | 0.06% | −216,676−44.7% | Reduced |
| National Pension Service | 271,483 | $37.1M | 0.04% | +21,398+8.6% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 273,548 | $37.4M | 0.03% | +27,734+11.3% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 277,834 | $38.0M | 0.17% | +137,514+98.0% | Added |
| TD Asset Management Inc | 284,376 | $38.9M | 0.04% | −71,330−20.1% | Reduced |
| Rhumbline Advisers | 296,294 | $40.5M | 0.04% | +27,703+10.3% | Added |
| Fisher Asset Management, LLC | 299,030 | $40.9M | 0.02% | +118,106+65.3% | Added |
| Citigroup Inc | 302,615 | $41.4M | 0.03% | +38,276+14.5% | Added |
| Royal Bank of Canada | 330,562 | $45.2M | 0.01% | +84,227+34.2% | Added |
| BNP Paribas Arbitrage, SA | 366,181 | $50.1M | 0.04% | −11,780−3.1% | Reduced |
| California Public Employees Retirement System | 385,094 | $52.7M | 0.04% | −12,755−3.2% | Reduced |
| AustralianSuper Pty Ltd | 397,697 | $54.4M | 0.31% | +397,697 | New |
| Point72 Asset Management, L.P. | 407,257 | $55.7M | 0.16% | +407,257 | New |
| Swiss National Bank | 411,000 | $56.2M | 0.04% | −500−0.1% | Reduced |
| Squarepoint Ops LLC | 415,510 | $56.9M | 0.14% | +44,309+11.9% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 416,960 | $57.1M | 0.04% | +25,464+6.5% | Added |
| Prudential Financial Inc | 420,649 | $57.6M | 0.08% | −155,627−27.0% | Reduced |
| Millennium Management LLC | 423,997 | $58.0M | 0.06% | −119,847−22.0% | Reduced |
| Causeway Capital Management LLC | 433,517 | $59.3M | 1.24% | +151,815+53.9% | Added |
| Robeco Institutional Asset Management B.V. | 453,529 | $62.1M | 0.12% | +45,253+11.1% | Added |
| Patient Capital Management, LLC | 455,605 | $62.3M | 3.21% | +41,645+10.1% | Added |
| HSBC Holdings PLC | 484,029 | $66.0M | 0.04% | +43,028+9.8% | Added |
| Citadel Advisors LLC | 541,764 | $74.1M | 0.07% | +388,104+252.6% | Added |
| Franklin Resources Inc | 588,117 | $80.5M | 0.02% | +193,726+49.1% | Added |
| Goldman Sachs Group Inc | 604,697 | $82.7M | 0.02% | −165,623−21.5% | Reduced |
| UBS Group AG | 646,147 | $88.4M | 0.02% | −402,272−38.4% | Reduced |
| First Trust Advisors LP | 661,420 | $90.5M | 0.08% | +150,140+29.4% | Added |
| Allianz Asset Management GmbH | 667,767 | $91.4M | 0.13% | +131,813+24.6% | Added |
| Two Sigma Advisers, LP | 677,400 | $92.7M | 0.21% | +142,800+26.7% | Added |
| Employees Provident Fund Board | 704,196 | $96.4M | 1.09% | 00.0% | Unchanged |
| Massachusetts Financial Services Co | 708,415 | $96.9M | 0.03% | −23,961−3.3% | Reduced |
| SG Americas Securities, LLC | 719,793 | $98.5M | 0.34% | +719,793 | New |
| Bank of America Corp | 729,856 | $99.9M | 0.01% | +313,634+75.4% | Added |
| Man Group plc | 765,321 | $104.7M | 0.31% | +78,771+11.5% | Added |
| Balyasny Asset Management LLC | 786,219 | $107.6M | 0.27% | +740,390+1,615.5% | Added |
| Renaissance Technologies LLC | 804,506 | $110.1M | 0.17% | −387,700−32.5% | Reduced |
| Two Sigma Investments, LP | 879,330 | $120.3M | 0.26% | +26,994+3.2% | Added |
| Barclays PLC | 918,353 | $125.7M | 0.06% | +79,999+9.5% | Added |
| Deutsche Bank AG | 941,052 | $128.8M | 0.05% | −228,518−19.5% | Reduced |
| Bank of New York Mellon Corp | 953,811 | $130.5M | 0.03% | −20,984−2.2% | Reduced |
| Dimensional Fund Advisors LP | 986,719 | $135.0M | 0.03% | −35,305−3.5% | Reduced |
| Charles Schwab Investment Management Inc | 1,019,219 | $139.5M | 0.03% | +47,956+4.9% | Added |
| Van Eck Associates Corp | 1,073,622 | $146.9M | 0.19% | +7,162+0.7% | Added |
| Price T Rowe Associates Inc | 1,151,192 | $157.5M | 0.02% | −782,524−40.5% | Reduced |
| Qube Research & Technologies Ltd | 1,226,709 | $167.9M | 0.26% | +135,867+12.5% | Added |
| Amundi | 1,315,947 | $172.0M | 0.06% | +98,957+8.1% | Added |
| Legal & General Group Plc | 1,285,027 | $175.8M | 0.05% | +55,020+4.5% | Added |
| FMR LLC | 1,308,828 | $179.1M | 0.01% | +551,258+72.8% | Added |
| Pacer Advisors, Inc. | 1,352,560 | $185.1M | 0.44% | −1,314,971−49.3% | Reduced |
| AQR Capital Management LLC | 1,368,842 | $187.3M | 0.19% | +829,150+153.6% | Added |
| JPMorgan Chase & Co | 1,463,720 | $200.3M | 0.02% | −632,594−30.2% | Reduced |
| Northern Trust Corp | 1,501,087 | $205.4M | 0.03% | −49,043−3.2% | Reduced |
| UBS Asset Management Americas Inc | 1,510,386 | $206.7M | 0.05% | −23,427−1.5% | Reduced |
| D. E. Shaw & Co., Inc. | 1,585,572 | $217.0M | 0.26% | −24,327−1.5% | Reduced |
| Morgan Stanley | 1,990,668 | $272.4M | 0.02% | +208,312+11.7% | Added |
| Norges Bank | 2,153,386 | $294.7M | 0.04% | −171,813−7.4% | Reduced |
| Invesco Ltd. | 2,265,007 | $309.9M | 0.06% | +136,200+6.4% | Added |
| T. Rowe Price Investment Management, Inc. | 2,660,290 | $364.0M | 0.24% | −439,496−14.2% | Reduced |
| Geode Capital Management, LLC | 3,846,864 | $524.8M | 0.04% | +151,388+4.1% | Added |
| Wellington Management Group LLP | 4,672,437 | $639.4M | 0.12% | −258,286−5.2% | Reduced |
| State Street Corp | 7,396,910 | $1.01B | 0.04% | −1,3380.0% | Reduced |
| BlackRock, Inc. | 15,211,036 | $2.08B | 0.04% | −262,674−1.7% | Reduced |
| Primecap Management Co | 15,943,259 | $2.18B | 1.80% | −102,950−0.6% | Reduced |
| Vanguard Group Inc | 17,032,839 | $2.33B | 0.04% | +283,964+1.7% | Added |
| Proequities, Inc. | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Activest Wealth Management | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| OrbiMed Advisors LLC | 0 | $0 | 0.00% | −509,100−100.0% | Sold out |
| Pinebridge Investments, L.P. | 0 | $0 | 0.00% | −249,800−100.0% | Sold out |
| Wedge Capital Management L L P | 0 | $0 | 0.00% | −179,191−100.0% | Sold out |
| Krensavage Asset Management, LLC | 0 | $0 | 0.00% | −108,923−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −79,516−100.0% | Sold out |
| Bridgewater Associates, LP | 0 | $0 | 0.00% | −70,033−100.0% | Sold out |
| Kranot Hishtalmut Le Morim Ve Gananot Havera Menahelet LTD | 0 | $0 | 0.00% | −54,585−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −39,405−100.0% | Sold out |
| Martingale Asset Management L P | 0 | $0 | 0.00% | −34,922−100.0% | Sold out |
| Alberta Investment Management Corp | 0 | $0 | 0.00% | −33,180−100.0% | Sold out |
| Diversified Trust Co | 0 | $0 | 0.00% | −22,926−100.0% | Sold out |
| ING Groep NV | 0 | $0 | 0.00% | −22,171−100.0% | Sold out |
| Kranot Hishtalmut Le Morim Tichoniim Havera Menahelet LTD | 0 | $0 | 0.00% | −18,715−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −13,875−100.0% | Sold out |
| Parallax Volatility Advisers, L.P. | 0 | $0 | 0.00% | −13,690−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −13,357−100.0% | Sold out |