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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, Q3 2021

Institutional positions in Biogen Inc. as of Sep 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
1,044
−50 vs. Q2 2021
Shares held
123.8M
−1.32M (−1.1%) vs. Q2 2021
Total value
$35.1B
−$8.22B (−19.0%) vs. Q2 2021
New holders
74
351 more added
Sold out
124
398 more reduced

13 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2021: 1,044 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 heldQ3 2021: $35.1B
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, Q3 2021

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q2 2021.

Institutions holding BIIB in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Morningstar Investment Services LLC11,041$3.15M0.04%+1,810+19.6%Added
Marshall Wace, LLP11,422$3.23M0.02%−639,898−98.2%Reduced
Maryland State Retirement & Pension System11,318$3.24M0.09%00.0%Unchanged
IMC-Chicago, LLC11,465$3.24M0.26%−12,940−53.0%Reduced
Gifford Fong Associates11,500$3.25M0.63%00.0%Unchanged
SG3 Management, LLC11,500$3.25M1.15%+11,500New
Teachers Retirement System of the State of Kentucky11,740$3.32M0.03%00.0%Unchanged
American Assets Investment Management, LLC12,000$3.40M0.42%00.0%Unchanged
Kestra Advisory Services, LLC12,150$3.44M0.03%−2,346−16.2%Reduced
Birchview Capital, LP12,600$3.57M2.43%+500+4.1%Added
Bridgewater Associates, LP12,622$3.57M0.02%−5,234−29.3%Reduced
Mengis Capital Management, Inc.12,650$3.58M0.75%00.0%Unchanged
Essex Investment Management Co LLC12,648$3.58M0.44%+100+0.8%Added
Securian Asset Management, Inc12,734$3.60M0.07%−252−1.9%Reduced
Cardan Capital Partners, LLC12,809$3.63M0.41%−89−0.7%Reduced
Daiwa Securities Group Inc.12,927$3.66M0.02%+683+5.6%Added
Cubist Systematic Strategies, LLC12,968$3.67M0.05%−23,740−64.7%Reduced
MML Investors Services, LLC13,018$3.68M0.03%+2,548+24.3%Added
KMG Fiduciary Partners, LLC13,308$3.77M0.64%−1,029−7.2%Reduced
Rockefeller Capital Management L.P.13,420$3.80M0.02%−2,151−13.8%Reduced
Federation des caisses Desjardins du Quebec13,518$3.82M0.04%−373−2.7%Reduced
Mariner, LLC13,533$3.83M0.02%+2,074+18.1%Added
Creative Planning13,649$3.86M0.01%+656+5.0%Added
Blair William & Co13,685$3.87M0.01%+2,297+20.2%Added
Gotham Asset Management, LLC13,742$3.89M0.16%+10,832+372.2%Added
Nomura Holdings Inc13,434$3.90M0.03%−31,611−70.2%Reduced
ExodusPoint Capital Management, LP13,860$3.92M0.06%−16,572−54.5%Reduced
Court Place Advisors, LLC14,842$4.20M1.24%−20−0.1%Reduced
Norinchukin Bank, The14,927$4.22M0.06%+740+5.2%Added
First National Bank of Omaha14,986$4.24M0.22%−570−3.7%Reduced
Wolverine Trading, LLC15,002$4.28M0.09%−5,267−26.0%Reduced
Timber Creek Capital Management LLC15,375$4.35M1.38%−72−0.5%Reduced
Gabelli Funds LLC15,490$4.38M0.03%+135+0.9%Added
Swiss Life Asset Management Ltd15,552$4.40M0.06%−10,960−41.3%Reduced
Kovitz Investment Group Partners, LLC15,592$4.41M0.09%−27−0.2%Reduced
Raymond James Financial Services Advisors, Inc.15,592$4.41M0.01%+168+1.1%Added
Pacer Advisors, Inc.15,652$4.43M0.06%−39,494−71.6%Reduced
Exchange Traded Concepts, LLC15,900$4.50M0.11%+15,471+3,606.3%Added
Stephens Inc15,995$4.53M0.07%−2,421−13.1%Reduced
Cornerstone Advisors, LLC16,000$4.53M0.26%00.0%Unchanged
Segall Bryant & Hamill, LLC16,020$4.54M0.04%00.0%Unchanged
PFM Health Sciences, LP16,900$4.78M0.16%−115,372−87.2%Reduced
Louisiana State Employees Retirement System17,000$4.81M0.12%−200−1.2%Reduced
Dai-Ichi Life Insurance Company, Ltd17,086$4.83M0.06%+685+4.2%Added
Edgestream Partners, L.P.17,214$4.87M0.30%+13,291+338.8%Added
Metropolitan Life Insurance Co17,344$4.91M0.07%−779−4.3%Reduced
Nissay Asset Management Corp17,424$4.93M0.04%+367+2.2%Added
Symons Capital Management Inc17,481$4.95M3.17%−1,229−6.6%Reduced
Cardinal Capital Management17,496$4.95M1.07%−59−0.3%Reduced
Banco Bilbao Vizcaya Argentaria, S.A.17,221$4.96M0.08%+4,610+36.6%Added
First Republic Investment Management, Inc.17,657$5.00M0.01%+6,293+55.4%Added
Ilmarinen Mutual Pension Insurance Co18,000$5.09M0.05%00.0%Unchanged
First Horizon Advisors, Inc.18,352$5.19M0.17%+866+5.0%Added
Hartford Investment Management Co18,543$5.25M0.14%−1,946−9.5%Reduced
Shelton Capital Management18,656$5.28M0.21%+63+0.3%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys18,676$5.29M0.06%−187−1.0%Reduced
Exchange Capital Management, Inc.18,853$5.33M1.03%−675−3.5%Reduced
HighTower Advisors, LLC19,345$5.48M0.01%+385+2.0%Added
Sectoral Asset Management Inc19,432$5.50M0.46%00.0%Unchanged
Mutual of America Capital Management LLC19,543$5.53M0.05%−81−0.4%Reduced
Varma Mutual Pension Insurance Co20,000$5.66M0.09%+10,000+100.0%Added
Hudson Bay Capital Management LP20,000$5.66M0.08%+5,000+33.3%Added
Murchinson Ltd.20,000$5.66M2.81%+5,000+33.3%Added
Capital Fund Management S.A.20,022$5.67M0.15%+20,022New
ICICI Prudential Asset Management Co Ltd20,144$5.70M0.96%+3,166+18.6%Added
LMR Partners LLP20,196$5.71M0.08%−2,610−11.4%Reduced
Moore Capital Management, LP20,206$5.72M0.12%−58,952−74.5%Reduced
IFM Investors Pty Ltd20,449$5.79M0.12%−80−0.4%Reduced
Comerica Bank22,007$5.83M0.04%−1,671−7.1%Reduced
Fort Washington Investment Advisors Inc20,645$5.84M0.04%−100−0.5%Reduced
Employees Retirement System of Texas20,800$5.89M0.07%−2,100−9.2%Reduced
SG Americas Securities, LLC21,299$6.03M0.03%+8,455+65.8%Added
Alberta Investment Management Corp21,700$6.14M0.05%+17,100+371.7%Added
Natixis Advisors, L.P.21,925$6.20M0.03%+1,920+9.6%Added
Livforsakringsbolaget Skandia, Omsesidigt21,987$6.22M0.39%−200−0.9%Reduced
Banque Pictet & Cie SA22,262$6.30M0.07%+7,338+49.2%Added
Point72 Hong Kong Ltd22,359$6.33M0.49%+6,679+42.6%Added
Westpac Banking Corp22,455$6.35M0.07%−3,609−13.8%Reduced
M&T Bank Corp22,499$6.37M0.03%−2,100−8.5%Reduced
Traynor Capital Management, Inc.22,730$6.43M0.88%−2,353−9.4%Reduced
Mackay Shields LLC22,938$6.49M0.06%−1,089−4.5%Reduced
Texas Permanent School Fund23,024$6.52M0.08%−1,988−7.9%Reduced
MEAG MUNICH ERGO, Kapitalanlagegesellschaft mbH23,247$6.58M1.14%+18,641+404.7%Added
APG Asset Management N.V.27,261$6.66M0.01%−36,000−56.9%Reduced
Quantitative Investment Management, LLC23,817$6.74M0.61%−5,778−19.5%Reduced
Auxier Asset Management23,985$6.79M1.15%−145−0.6%Reduced
Bank of Nova Scotia24,306$6.88M0.01%+1,684+7.4%Added
Sprott Inc.25,000$7.08M0.52%00.0%Unchanged
Squarepoint Ops LLC25,076$7.10M0.05%+3,383+15.6%Added
ING Groep NV25,135$7.11M0.09%+115+0.5%Added
International Biotechnology Trust PLC25,500$7.21M1.77%−23,000−47.4%Reduced
Banco Santander, S.A.25,664$7.26M0.04%+71+0.3%Added
Bokf, NA26,507$7.50M0.13%+26,507New
Vident Investment Advisory, LLC26,563$7.52M0.23%−3,583−11.9%Reduced
Utah Retirement Systems26,829$7.59M0.10%−1,700−6.0%Reduced
Susquehanna Fundamental Investments, LLC26,862$7.60M0.14%+26,862New
Public Employees Retirement Association of Colorado26,996$7.64M0.03%−122−0.4%Reduced
Meeder Asset Management Inc27,178$7.69M0.40%+6,663+32.5%Added
Commonwealth Equity Services, LLC27,225$7.70M0.02%−485−1.8%Reduced
Teacher Retirement System of Texas27,667$7.83M0.04%−21,837−44.1%Reduced