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; 1,046 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.
13F holders, Q2 2021
Institutional positions in Biogen Inc. as of Jun 30, 2021. 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
- 1,107
- +26 vs. Q1 2021
- Shares held
- 126.1M
- −1.15M (−0.9%) vs. Q1 2021
- Total value
- $43.6B
- +$8.06B (+22.7%) vs. Q1 2021
- New holders
- 136
- 325 more added
- Sold out
- 110
- 469 more reduced
15 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2021: 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 | 1,046 | $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, Q2 2021
Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Primecap Management Co | 16,458,506 | $5.70B | 3.83% | −299,750−1.8% | Reduced |
| BlackRock Inc. | 13,206,591 | $4.57B | 0.13% | −296,037−2.2% | Reduced |
| Vanguard Group Inc | 11,753,333 | $4.07B | 0.10% | −100,325−0.8% | Reduced |
| State Street Corp | 6,680,040 | $2.31B | 0.12% | +7,507+0.1% | Added |
| Wellington Management Group LLP | 5,601,861 | $1.94B | 0.32% | −300,980−5.1% | Reduced |
| JPMorgan Chase & Co | 5,354,766 | $1.85B | 0.24% | +1,467,865+37.8% | Added |
| Clearbridge Investments, LLC | 3,565,112 | $1.23B | 0.86% | −403,932−10.2% | Reduced |
| Geode Capital Management, LLC | 2,893,750 | $1.00B | 0.14% | +97,239+3.5% | Added |
| Northern Trust Corp | 2,067,539 | $715.9M | 0.13% | −52,969−2.5% | Reduced |
| Norges Bank | 1,821,151 | $630.6M | 0.14% | +69,083+3.9% | Added |
| Bank of New York Mellon Corp | 1,765,832 | $611.5M | 0.12% | −411,266−18.9% | Reduced |
| Price T Rowe Associates Inc | 1,612,563 | $558.4M | 0.05% | −164,608−9.3% | Reduced |
| Deutsche Bank AG | 1,415,194 | $490.0M | 0.24% | +128,955+10.0% | Added |
| Legal & General Group Plc | 1,385,692 | $479.8M | 0.16% | +189,746+15.9% | Added |
| FMR LLC | 1,352,218 | $468.2M | 0.04% | −562,998−29.4% | Reduced |
| Renaissance Technologies LLC | 1,330,003 | $460.5M | 0.57% | −608,159−31.4% | Reduced |
| American Century Companies Inc | 1,242,043 | $430.1M | 0.29% | +258,217+26.2% | Added |
| Dimensional Fund Advisors LP | 1,187,688 | $411.3M | 0.13% | +75,020+6.7% | Added |
| UBS Asset Management Americas Inc | 1,138,473 | $394.2M | 0.17% | −21,311−1.8% | Reduced |
| Invesco Ltd. | 1,043,458 | $361.3M | 0.09% | +9,417+0.9% | Added |
| Pictet Asset Management Ltd | 871,921 | $301.9M | 0.33% | −156,545−15.2% | Reduced |
| Nuveen Asset Management, LLC | 849,906 | $294.3M | 0.09% | +22,598+2.7% | Added |
| Goldman Sachs Group Inc | 841,078 | $291.2M | 0.08% | +3,518+0.4% | Added |
| D. E. Shaw & Co., Inc. | 789,693 | $273.4M | 0.31% | +180,453+29.6% | Added |
| Charles Schwab Investment Management Inc | 723,829 | $250.6M | 0.08% | +19,565+2.8% | Added |
| Morgan Stanley | 702,175 | $243.1M | 0.03% | +84,388+13.7% | Added |
| Bank of America Corp | 692,251 | $239.7M | 0.03% | −125,515−15.3% | Reduced |
| Parametric Portfolio Associates LLC | 684,964 | $237.2M | 0.13% | +22,666+3.4% | Added |
| Marshall Wace, LLP | 651,320 | $225.5M | 1.19% | +488,764+300.7% | Added |
| Sarissa Capital Management LP | 643,000 | $222.7M | 17.70% | 00.0% | Unchanged |
| Swiss National Bank | 621,072 | $215.1M | 0.13% | +29,314+5.0% | Added |
| Amundi | 619,698 | $214.6M | 0.15% | +619,698 | New |
| Van Eck Associates Corp | 596,547 | $206.6M | 0.49% | −27,497−4.4% | Reduced |
| Citadel Advisors LLC | 556,889 | $192.8M | 0.20% | +333,326+149.1% | Added |
| Wells Fargo & Company | 549,636 | $190.3M | 0.04% | −31,100−5.4% | Reduced |
| Bellevue Group AG | 528,100 | $182.9M | 1.79% | −30,300−5.4% | Reduced |
| AQR Capital Management LLC | 514,462 | $177.6M | 0.31% | −510,943−49.8% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 494,725 | $171.3M | 0.10% | −37,667−7.1% | Reduced |
| California Public Employees Retirement System | 473,506 | $164.0M | 0.12% | +100,803+27.0% | Added |
| Franklin Resources Inc | 471,300 | $163.2M | 0.06% | −58,979−11.1% | Reduced |
| Parnassus Investments | 452,053 | $156.5M | 0.34% | +137,641+43.8% | Added |
| Nordea Investment Management AB | 444,999 | $154.1M | 0.21% | −68,522−13.3% | Reduced |
| First Trust Advisors LP | 432,106 | $149.6M | 0.16% | +10,447+2.5% | Added |
| Royal Bank of Canada | 387,868 | $134.3M | 0.04% | +36,132+10.3% | Added |
| Susquehanna International Group, LLP | 377,310 | $130.7M | 0.14% | +116,668+44.8% | Added |
| Samlyn Capital, LLC | 376,231 | $130.3M | 1.99% | +376,231 | New |
| Armistice Capital, LLC | 368,000 | $127.4M | 3.38% | +80,000+27.8% | Added |
| Palo Alto Investors LP | 361,600 | $125.2M | 6.90% | +18,400+5.4% | Added |
| LSV Asset Management | 360,170 | $124.7M | 0.21% | −557,961−60.8% | Reduced |
| Assenagon Asset Management S.A. | 352,079 | $121.9M | 0.52% | +88,059+33.4% | Added |
| HealthCor Management, L.P. | 339,300 | $117.5M | 4.82% | +258,790+321.4% | Added |
| Capital World Investors | 330,992 | $114.6M | 0.02% | 00.0% | Unchanged |
| Barclays PLC | 328,233 | $113.7M | 0.09% | +32,878+11.1% | Added |
| Boston Partners | 321,083 | $111.2M | 0.14% | +15,047+4.9% | Added |
| Millennium Management LLC | 307,029 | $106.3M | 0.14% | +152,271+98.4% | Added |
| State of Wisconsin Investment Board | 291,563 | $101.0M | 0.21% | +140,375+92.8% | Added |
| New York State Common Retirement Fund | 288,789 | $100.0M | 0.10% | −3,211−1.1% | Reduced |
| Citigroup Inc | 275,535 | $95.4M | 0.08% | +22,747+9.0% | Added |
| Candriam Luxembourg S.C.A. | 275,040 | $95.2M | 0.65% | −115,830−29.6% | Reduced |
| Rhumbline Advisers | 274,339 | $95.0M | 0.12% | −19,578−6.7% | Reduced |
| AustralianSuper Pty Ltd | 272,513 | $94.4M | 0.66% | −235,266−46.3% | Reduced |
| Credit Suisse AG | 271,066 | $93.9M | 0.07% | −8,392−3.0% | Reduced |
| California State Teachers Retirement System | 264,242 | $91.5M | 0.11% | −30,775−10.4% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 261,270 | $90.5M | 0.32% | −27,970−9.7% | Reduced |
| National Pension Service | 253,622 | $87.8M | 0.17% | +4,600+1.8% | Added |
| Point72 Asset Management, L.P. | 245,506 | $85.0M | 0.42% | +130,106+112.7% | Added |
| Railway Pension Investments Ltd | 245,022 | $84.8M | 0.71% | −3,900−1.6% | Reduced |
| Great West Life Assurance Co | 241,935 | $83.8M | 0.19% | −22,759−8.6% | Reduced |
| Canada Pension Plan Investment Board | 241,290 | $83.6M | 0.10% | −3,484−1.4% | Reduced |
| Saratoga Research & Investment Management | 241,053 | $83.5M | 3.94% | −13,128−5.2% | Reduced |
| UBS Group AG | 239,209 | $82.8M | 0.03% | +40,143+20.2% | Added |
| Alliancebernstein L.P. | 230,359 | $79.8M | 0.03% | −27,014−10.5% | Reduced |
| Prudential Financial Inc | 230,001 | $79.6M | 0.11% | −2,124−0.9% | Reduced |
| Bank of Montreal | 192,594 | $79.0M | 0.04% | +15,249+8.6% | Added |
| Erste Asset Management GmbH | 222,335 | $77.0M | 1.53% | +25,598+13.0% | Added |
| Envestnet Asset Management Inc | 217,559 | $75.3M | 0.04% | +4,991+2.3% | Added |
| Employees Provident Fund Board | 212,569 | $73.6M | 1.21% | +10,500+5.2% | Added |
| State Board of Administration of Florida Retirement System | 210,666 | $72.9M | 0.14% | +596+0.3% | Added |
| Tekla Capital Management LLC | 209,124 | $72.4M | 2.35% | −37,720−15.3% | Reduced |
| Swedbank AB | 208,280 | $72.1M | 0.14% | −32,512−13.5% | Reduced |
| Allianz Asset Management GmbH | 202,341 | $70.1M | 0.06% | −30,680−13.2% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 200,735 | $69.5M | 0.15% | −26,316−11.6% | Reduced |
| Sprucegrove Investment Management Ltd | 200,400 | $69.4M | 1.64% | +96,900+93.6% | Added |
| AXA S.A. | 193,933 | $67.2M | 0.19% | +24,043+14.2% | Added |
| ProShare Advisors LLC | 193,263 | $66.9M | 0.20% | −8,014−4.0% | Reduced |
| Westfield Capital Management Co LP | 191,842 | $66.4M | 0.40% | +189,985+10,230.7% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 191,047 | $66.2M | 0.41% | +46,045+31.8% | Added |
| DekaBank Deutsche Girozentrale | 191,945 | $66.0M | 0.19% | −22,998−10.7% | Reduced |
| Thrivent Financial for Lutherans | 190,285 | $65.9M | 0.13% | +29,693+18.5% | Added |
| Ameriprise Financial Inc | 189,409 | $65.6M | 0.02% | −8,513−4.3% | Reduced |
| New York State Teachers Retirement System | 189,408 | $65.6M | 0.14% | −11,632−5.8% | Reduced |
| Lord, Abbett & Co. LLC | 187,722 | $65.0M | 0.16% | +187,722 | New |
| Arrowstreet Capital, Limited Partnership | 186,817 | $64.7M | 0.08% | +186,817 | New |
| Avidity Partners Management LP | 183,900 | $63.7M | 1.72% | +183,900 | New |
| Cambiar Investors LLC | 182,021 | $63.0M | 2.03% | +22,300+14.0% | Added |
| Acadian Asset Management LLC | 179,221 | $62.1M | 0.23% | −171,511−48.9% | Reduced |
| Principal Financial Group Inc | 178,953 | $62.0M | 0.04% | −1,605−0.9% | Reduced |
| HSBC Holdings PLC | 174,067 | $60.2M | 0.07% | −88,967−33.8% | Reduced |
| Caption Management, LLC | 169,304 | $58.6M | 5.26% | +93,830+124.3% | Added |
| Robeco Institutional Asset Management B.V. | 164,445 | $56.9M | 0.13% | −111,144−40.3% | Reduced |