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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, Q2 2023

Institutional positions in Biogen Inc. as of Jun 30, 2023. 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
1,009
+11 vs. Q1 2023
Shares held
126.8M
−1.09M (−0.9%) vs. Q1 2023
Total value
$36.1B
+$1.11B (+3.2%) vs. Q1 2023
New holders
96
322 more added
Sold out
85
363 more reduced

6 institutions that held it in Q1 2023 haven't filed for Q2 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2023: 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.

Institutional holdersQ2 2023: 1,009 institutions
Q1 2021: 1,096 institutionsQ2 2021: 1,107 institutionsQ3 2021: 1,044 institutionsQ4 2021: 1,014 institutionsQ1 2022: 954 institutionsQ2 2022: 930 institutionsQ3 2022: 987 institutionsQ4 2022: 1,033 institutionsQ1 2023: 1,004 institutionsQ2 2023: 1,009 institutionsQ3 2023: 966 institutionsQ4 2023: 1,005 institutionsQ1 2024: 955 institutionsQ2 2024: 947 institutionsQ3 2024: 921 institutionsQ4 2024: 879 institutionsQ1 2025: 882 institutionsQ2 2025: 867 institutionsQ3 2025: 909 institutionsQ4 2025: 1,002 institutionsQ1 2026: 1,015 institutionsQ2 2026: 1,047 institutions
Value heldQ2 2023: $36.1B
Q1 2021: $35.7BQ2 2021: $43.6BQ3 2021: $35.1BQ4 2021: $29.7BQ1 2022: $25.9BQ2 2022: $25.0BQ3 2022: $33.0BQ4 2022: $34.6BQ1 2023: $35.0BQ2 2023: $36.1BQ3 2023: $32.2BQ4 2023: $33.3BQ1 2024: $28.0BQ2 2024: $29.9BQ3 2024: $25.1BQ4 2024: $20.2BQ1 2025: $17.7BQ2 2025: $16.3BQ3 2025: $18.4BQ4 2025: $24.6BQ1 2026: $24.7BQ2 2026: $30.7B
Institutions holding BIIB and their total value by quarter
QuarterHoldersValue
Q2 20261,047$30.7B
Q1 20261,015$24.7B
Q4 20251,002$24.6B
Q3 2025909$18.4B
Q2 2025867$16.3B
Q1 2025882$17.7B
Q4 2024879$20.2B
Q3 2024921$25.1B
Q2 2024947$29.9B
Q1 2024955$28.0B
Q4 20231,005$33.3B
Q3 2023966$32.2B
Q2 20231,009$36.1B
Q1 20231,004$35.0B
Q4 20221,033$34.6B
Q3 2022987$33.0B
Q2 2022930$25.0B
Q1 2022954$25.9B
Q4 20211,014$29.7B
Q3 20211,044$35.1B
Q2 20211,107$43.6B
Q1 20211,096$35.7B

Institutions, Q2 2023

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q1 2023.

Institutions holding BIIB in Q2 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Banque Pictet & Cie SA39,376$11.2M0.10%−6,058−13.3%Reduced
State of Michigan Retirement System39,803$11.3M0.07%−2,658−6.3%Reduced
Boston Common Asset Management, LLC39,890$11.4M0.24%−116−0.3%Reduced
Affinity Asset Advisors, LLC40,000$11.4M4.48%+40,000New
Calamos Advisors LLC40,318$11.5M0.06%00.0%Unchanged
Saturn V Capital Management LLC41,047$11.7M6.48%+3,588+9.6%Added
Oppenheimer Asset Management Inc.41,272$11.8M0.17%−410−1.0%Reduced
Arizona State Retirement System41,301$11.8M0.10%+1,982+5.0%Added
Atwood & Palmer Inc41,702$11.9M1.06%+1,014+2.5%Added
LPL Financial LLC42,029$12.0M0.01%−500−1.2%Reduced
Point72 Middle East FZE42,500$12.1M0.67%+42,492+531,150.0%Added
Mackenzie Financial Corp42,621$12.2M0.02%−2,968−6.5%Reduced
ING Groep NV43,848$12.5M0.09%−73,710−62.7%Reduced
AMF Pensionsforsakring AB43,849$12.5M0.11%−1,796−3.9%Reduced
Grimes & Company, Inc.44,084$12.6M0.45%−404−0.9%Reduced
Millennium Management LLC44,174$12.6M0.01%−469,218−91.4%Reduced
Stifel Financial Corp45,918$13.1M0.02%+6,213+15.6%Added
Acadian Asset Management LLC46,040$13.1M0.05%+381+0.8%Added
Bridger Management, LLC46,633$13.3M4.41%−9,644−17.1%Reduced
State of Alaska, Department of Revenue47,740$13.6M0.16%−924−1.9%Reduced
Qube Research & Technologies Ltd48,369$13.8M0.05%+48,369New
National Bank of Canada48,709$13.9M0.03%+34,971+254.6%Added
Factory Mutual Insurance Co49,200$14.0M0.21%+7,200+17.1%Added
Altrinsic Global Advisors LLC49,575$14.1M0.54%−2,201−4.3%Reduced
Tredje AP-fonden50,383$14.4M0.20%00.0%Unchanged
Baird Financial Group, Inc.51,463$14.7M0.04%−1,457−2.8%Reduced
Artia Global Partners LP52,275$14.9M5.13%−27,725−34.7%Reduced
Gateway Investment Advisers LLC52,992$15.1M0.18%−13,444−20.2%Reduced
Clal Insurance Enterprises Holdings Ltd53,000$15.1M0.18%00.0%Unchanged
American International Group, Inc.53,074$15.1M0.09%−1,420−2.6%Reduced
Ossiam53,646$15.3M0.27%+15,690+41.3%Added
Connor, Clark & Lunn Investment Management Ltd.54,037$15.4M0.08%−53,231−49.6%Reduced
ExodusPoint Capital Management, LP56,852$16.2M0.19%−47,444−45.5%Reduced
Aviva PLC57,261$16.3M0.07%+24,493+74.7%Added
Hudson Bay Capital Management LP57,500$16.4M0.16%−51,806−47.4%Reduced
Allspring Global Investments Holdings, LLC59,336$16.9M0.03%−8,833−13.0%Reduced
Asset Management One Co.,Ltd.59,855$17.0M0.07%+1,498+2.6%Added
Balyasny Asset Management LLC59,988$17.1M0.05%−179,407−74.9%Reduced
Sprucegrove Investment Management Ltd60,012$17.1M0.89%−11,388−15.9%Reduced
Illinois Municipal Retirement Fund60,100$17.1M0.34%+3,708+6.6%Added
Federated Hermes, Inc.60,140$17.1M0.04%−2,731−4.3%Reduced
Guggenheim Capital LLC60,919$17.4M0.14%+3,463+6.0%Added
Martingale Asset Management L P62,708$17.9M0.35%−160.0%Reduced
Boone Capital Management LLC62,877$17.9M6.43%+3,355+5.6%Added
DnB Asset Management AS63,069$18.0M0.10%+3,929+6.6%Added
FIL Ltd63,986$18.2M0.02%+99+0.2%Added
UniSuper Management Pty Ltd64,098$18.3M0.21%+64,098New
Rhenman & Partners Asset Management AB64,500$18.4M1.94%+17,000+35.8%Added
Rafferty Asset Management, LLC64,793$18.5M0.10%+5,628+9.5%Added
Macquarie Group Ltd65,399$18.6M0.02%+6,059+10.2%Added
Brandywine Global Investment Management, LLC67,165$19.1M0.16%+1,528+2.3%Added
Nisa Investment Advisors, LLC67,389$19.2M0.14%−4,342−6.1%Reduced
Mn Services Vermogensbeheer B.V.68,808$19.6M0.18%−4,600−6.3%Reduced
Truist Financial Corp69,252$19.7M0.03%−1,927−2.7%Reduced
Royal London Asset Management Ltd70,230$20.0M0.06%−26,145−27.1%Reduced
KBC Group NV72,310$20.6M0.08%+4,891+7.3%Added
Handelsbanken Fonder AB74,790$21.3M0.11%+5,555+8.0%Added
Schroder Investment Management Group75,960$21.6M0.03%+1,891+2.6%Added
Nomura Asset Management Co Ltd78,082$22.2M0.10%+16,835+27.5%Added
Gilder Gagnon Howe & Co LLC80,297$22.9M0.31%+25,885+47.6%Added
Public Employees Retirement System of Ohio81,915$23.3M0.09%−6,346−7.2%Reduced
Chevy Chase Trust Holdings, Inc.83,994$23.9M0.09%−414−0.5%Reduced
Glenmede Trust Co NA86,592$24.1M0.14%−109−0.1%Reduced
State of New Jersey Common Pension Fund D85,382$24.3M0.08%00.0%Unchanged
Skandinaviska Enskilda Banken AB (publ)88,501$25.2M0.17%+7,927+9.8%Added
Treasurer of the State of North Carolina91,213$26.0M0.14%−2,848−3.0%Reduced
SEI Investments Co91,261$26.0M0.05%−10,154−10.0%Reduced
Sector Gamma AS95,757$27.3M6.10%+7,921+9.0%Added
Toronto Dominion Bank96,838$27.6M0.04%+1,212+1.3%Added
Putnam Investments LLC97,316$27.7M0.04%+11,105+12.9%Added
Mitsubishi UFJ Trust & Banking Corp97,992$27.9M0.06%−30,202−23.6%Reduced
Grantham, Mayo, Van Otterloo & Co. LLC99,447$28.3M0.13%−41,055−29.2%Reduced
Logos Global Management LP100,000$28.5M3.93%00.0%Unchanged
Segantii Capital Management Ltd100,000$28.5M1.72%+100,000New
Wedge Capital Management L L P106,815$30.4M0.48%−34,811−24.6%Reduced
Employees Retirement System of Texas108,000$30.8M0.42%+35,000+47.9%Added
Letko, Brosseau & Associates Inc109,185$31.1M0.58%−6,540−5.7%Reduced
Victory Capital Management Inc109,759$31.3M0.03%−30,614−21.8%Reduced
State of Wisconsin Investment Board111,498$31.8M0.09%+12,677+12.8%Added
Manufacturers Life Insurance Company, The113,528$32.3M0.02%−10,981−8.8%Reduced
APG Asset Management N.V.126,272$33.0M0.07%−2,245−1.7%Reduced
Voya Investment Management LLC117,309$33.4M0.03%−3,111−2.6%Reduced
Braidwell LP121,942$34.7M1.13%−98,800−44.8%Reduced
Standard Life Aberdeen plc122,879$35.0M0.08%+8,372+7.3%Added
Swedbank AB124,532$35.5M0.06%−595−0.5%Reduced
Fred Alger Management, LLC125,980$35.9M0.18%−143,458−53.2%Reduced
Bridgewater Associates, LP126,419$36.0M0.22%−21,306−14.4%Reduced
Railway Pension Investments Ltd127,722$36.4M0.36%−46,300−26.6%Reduced
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.127,771$36.4M0.08%+8,195+6.9%Added
Fisher Asset Management, LLC130,317$37.1M0.02%−2,500−1.9%Reduced
STRS Ohio133,916$38.1M0.16%−2,837−2.1%Reduced
Jane Street Group, LLC134,913$38.4M0.05%+85,003+170.3%Added
Lord, Abbett & Co. LLC135,547$38.6M0.13%+135,547New
BNP Paribas Arbitrage, SA138,674$39.5M0.08%−79,975−36.6%Reduced
Nordea Investment Management AB139,653$39.7M0.05%−290,317−67.5%Reduced
Mirae Asset Global Investments Co., Ltd.141,161$40.2M0.09%−5,224−3.6%Reduced
Raymond James & Associates144,231$41.1M0.03%+23,814+19.8%Added
Massachusetts Financial Services Co146,516$41.7M0.01%−571−0.4%Reduced
Korea Investment CORP147,379$42.0M0.12%−20,415−12.2%Reduced
Banco Bilbao Vizcaya Argentaria, S.A.149,461$42.6M0.55%+2,520+1.7%Added