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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, Q4 2021

Institutional positions in Biogen Inc. as of Dec 31, 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
1,014
−7 vs. Q3 2021
Shares held
123.9M
+172.9K (+0.1%) vs. Q3 2021
Total value
$29.7B
−$5.31B (−15.2%) vs. Q3 2021
New holders
146
295 more added
Sold out
153
395 more reduced

23 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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.

Institutional holdersQ4 2021: 1,014 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 heldQ4 2021: $29.7B
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, Q4 2021

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q3 2021.

Institutions holding BIIB in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Tobam167,379$40.2M1.81%+37,610+29.0%Added
Railway Pension Investments Ltd166,422$39.9M0.30%−89,200−34.9%Reduced
BNP Paribas Arbitrage, SA164,508$39.5M0.09%+66,348+67.6%Added
Mitsubishi UFJ Trust & Banking Corp161,781$38.8M0.08%−24,082−13.0%Reduced
Jane Street Group, LLC160,491$38.5M0.07%+66,321+70.4%Added
United Capital Financial Advisers, LLC160,179$38.4M0.18%+3,538+2.3%Added
Caisse de Depot Et Placement du Quebec157,831$37.9M0.08%+21,354+15.6%Added
HSBC Holdings PLC156,227$37.6M0.04%+400+0.3%Added
Prudential Financial Inc154,328$37.1M0.05%−3,409−2.2%Reduced
Brandywine Global Investment Management, LLC150,320$36.1M0.26%−2,688−1.8%Reduced
Polar Capital Holdings Plc150,000$36.0M0.19%+25,000+20.0%Added
TD Asset Management Inc149,484$35.9M0.03%+2,555+1.7%Added
Farallon Capital Management, L.L.C.147,709$35.4M0.20%−23,150−13.5%Reduced
State of Michigan Retirement System145,541$34.9M0.18%+358+0.2%Added
Victory Capital Management Inc140,146$33.6M0.03%+11,863+9.2%Added
Tekla Capital Management LLC135,639$32.5M1.05%−98,214−42.0%Reduced
State of Wisconsin Investment Board135,563$32.5M0.06%−19,549−12.6%Reduced
Eaton Vance Management134,454$32.3M0.04%−6,995−4.9%Reduced
Putnam Investments LLC133,350$32.0M0.05%−18,311−12.1%Reduced
Raymond James & Associates132,282$31.7M0.03%−18,700−12.4%Reduced
Fisher Asset Management, LLC132,034$31.7M0.02%+23,545+21.7%Added
CIBC World Markets Corp124,701$29.9M0.16%+67,283+117.2%Added
Glenmede Trust Co NA124,617$29.9M0.14%−21,842−14.9%Reduced
Letko, Brosseau & Associates Inc123,371$29.6M0.42%+3,375+2.8%Added
Banco Bilbao Vizcaya Argentaria, S.A.120,731$28.7M0.38%+103,510+601.1%Added
Toronto Dominion Bank119,267$28.6M0.04%+10,743+9.9%Added
Mn Services Vermogensbeheer B.V.116,208$27.9M0.16%+2,800+2.5%Added
Rhenman & Partners Asset Management AB115,000$27.6M1.84%−35,000−23.3%Reduced
Great Lakes Advisors, LLC112,789$27.1M0.41%+25,158+28.7%Added
Manufacturers Life Insurance Company, The112,523$27.0M0.02%−20,993−15.7%Reduced
Altrinsic Global Advisors LLC112,083$26.9M0.86%−13,938−11.1%Reduced
Voya Investment Management LLC109,260$26.2M0.05%+29,757+37.4%Added
Boston Common Asset Management, LLC107,771$25.9M1.04%+7,511+7.5%Added
AMF Pensionsforsakring AB104,492$25.1M0.17%+9,209+9.7%Added
Mirae Asset Global Investments Co., Ltd.104,397$25.0M0.05%+18,669+21.8%Added
Russell Investments Group, Ltd.104,070$25.0M0.04%−2,380−2.2%Reduced
Krensavage Asset Management, LLC103,053$24.7M8.58%−149−0.1%Reduced
Lombard Odier Asset Management (Switzerland) SA102,484$24.6M1.57%+18,138+21.5%Added
Royal London Asset Management Ltd100,934$24.2M0.09%−6,572−6.1%Reduced
Skandinaviska Enskilda Banken AB (publ)100,899$24.2M0.12%−20,850−17.1%Reduced
Grantham, Mayo, Van Otterloo & Co. LLC99,100$23.8M0.11%+5,700+6.1%Added
Korea Investment CORP98,240$23.6M0.06%−21,474−17.9%Reduced
Treasurer of the State of North Carolina98,057$23.5M0.12%+8,042+8.9%Added
Zurcher Kantonalbank (Zurich Cantonalbank)97,207$23.3M0.11%+19,344+24.8%Added
Public Employees Retirement System of Ohio90,702$21.8M0.07%−4,085−4.3%Reduced
Citadel Advisors LLC89,241$21.4M0.02%−247,115−73.5%Reduced
Chevy Chase Trust Holdings, Inc.88,907$21.3M0.07%−3,324−3.6%Reduced
Guggenheim Capital LLC88,780$21.3M0.11%+10,109+12.8%Added
State of New Jersey Common Pension Fund D88,513$21.2M0.06%−1,610−1.8%Reduced
Worldquant Millennium Advisors LLC87,255$20.9M0.42%+87,255New
Leonteq Securities AG86,120$20.7M0.93%+50,704+143.2%Added
Retirement Systems of Alabama82,625$19.8M0.07%+6,073+7.9%Added
O'Shaughnessy Asset Management, LLC82,312$19.7M0.35%−6,989−7.8%Reduced
Balyasny Asset Management LLC81,244$19.5M0.08%+34,709+74.6%Added
Nisa Investment Advisors, LLC85,206$19.3M0.14%+6,965+8.9%Added
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.77,765$19.0M0.08%+10,774+16.1%Added
Baird Financial Group, Inc.77,840$18.7M0.04%+3,823+5.2%Added
Banque Pictet & Cie SA77,081$18.5M0.14%+54,819+246.2%Added
Bridgeway Capital Management, LLC75,745$18.2M0.34%−1,130−1.5%Reduced
FIL Ltd72,666$17.4M0.02%−1,734−2.3%Reduced
Beacon Investment Advisory Services, Inc.72,419$17.4M0.67%−6,549−8.3%Reduced
Storebrand Asset Management AS72,280$17.3M0.08%−31,471−30.3%Reduced
Edmond de Rothschild Holding S.A.72,075$17.3M0.37%+10,772+17.6%Added
Asset Management One Co.,Ltd.66,641$17.2M0.06%−1,378−2.0%Reduced
Ossiam70,113$16.8M0.44%+21,298+43.6%Added
Federated Hermes, Inc.69,450$16.7M0.03%+64,015+1,177.8%Added
Sector Gamma AS66,599$16.0M3.76%−16,720−20.1%Reduced
Handelsbanken Fonder AB65,686$15.8M0.08%−21,897−25.0%Reduced
Standard Life Aberdeen plc65,045$15.6M0.03%−1,936−2.9%Reduced
Jefferies Group LLC63,898$15.3M0.29%+54,541+582.9%Added
Andra AP-fonden60,400$14.5M0.30%−3,100−4.9%Reduced
Ensign Peak Advisors, Inc59,651$14.3M0.03%−59,105−49.8%Reduced
PEAK6 Investments LLC58,579$14.1M0.39%−48,840−45.5%Reduced
Montag & Caldwell, LLC58,121$13.9M1.35%+5,409+10.3%Added
American International Group, Inc.57,884$13.9M0.07%−1,381−2.3%Reduced
State of Alaska, Department of Revenue57,835$13.9M0.13%−8,085−12.3%Reduced
Truist Financial Corp57,764$13.9M0.02%−24,467−29.8%Reduced
Macquarie Group Ltd56,616$13.6M0.01%−15,769−21.8%Reduced
Gateway Investment Advisers LLC55,030$13.2M0.13%−6,782−11.0%Reduced
Alberta Investment Management Corp53,200$12.8M0.08%+31,500+145.2%Added
Oregon Public Employees Retirement Fund53,019$12.7M0.14%−10,418−16.4%Reduced
Westpac Banking Corp52,930$12.7M0.13%+30,475+135.7%Added
STRS Ohio51,145$12.3M0.04%−3,692−6.7%Reduced
Perceptive Advisors LLC48,600$11.7M0.18%00.0%Unchanged
International Biotechnology Trust PLC47,500$11.4M2.54%+22,000+86.3%Added
Aviva PLC46,102$11.1M0.05%−3,527−7.1%Reduced
LPL Financial LLC45,984$11.0M0.01%−3,273−6.6%Reduced
DnB Asset Management AS45,954$11.0M0.06%+2,688+6.2%Added
Oppenheimer Asset Management Inc.45,578$10.9M0.14%−6,960−13.2%Reduced
Calamos Advisors LLC45,018$10.8M0.04%+1,743+4.0%Added
Rafferty Asset Management, LLC44,960$10.8M0.06%+15,793+54.1%Added
Mackenzie Financial Corp44,505$10.7M0.01%+4,691+11.8%Added
Hudson Bay Capital Management LP44,000$10.6M0.12%+24,000+120.0%Added
GMT Capital Corp43,850$10.5M0.81%00.0%Unchanged
Stifel Financial Corp43,825$10.5M0.01%−3,420−7.2%Reduced
Illinois Municipal Retirement Fund43,287$10.4M0.29%+7,221+20.0%Added
Allspring Global Investments Holdings, LLC43,262$10.4M0.01%+43,262New
Group One Trading, L.P.42,771$10.3M0.19%+42,771New
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund42,721$10.3M0.09%−1,500−3.4%Reduced
Grimes & Company, Inc.41,529$9.96M0.46%−312−0.7%Reduced