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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
Paloma Partners Management Co7,663$2.17M0.09%+7,663New
Loring Wolcott & Coolidge Fiduciary Advisors LLP7,659$2.17M0.02%−75−1.0%Reduced
Xponance, Inc.7,533$2.13M0.04%−810−9.7%Reduced
Chicago Trust Co NA7,524$2.13M0.47%+5+0.1%Added
Northwestern Mutual Investment Management Company, LLC7,477$2.12M0.04%+641+9.4%Added
Malaga Cove Capital, LLC7,333$2.08M0.86%+10+0.1%Added
Central Bank & Trust Co7,330$2.07M0.34%−455−5.8%Reduced
Oppenheimer & Co Inc7,322$2.07M0.04%+435+6.3%Added
Prospera Financial Services Inc7,265$2.06M0.10%+6,404+743.8%Added
Cairn Investment Group, Inc.7,250$2.05M1.52%+113+1.6%Added
Paradigm Asset Management Co LLC7,200$2.04M0.56%−400−5.3%Reduced
Cambridge Investment Research Advisors, Inc.7,152$2.02M0.01%+656+10.1%Added
South Dakota Investment Council7,039$1.99M0.04%+400+6.0%Added
Fairfield, Bush & Co.7,000$1.98M0.64%+7,000New
E. Ohman J:or Asset Management AB6,999$1.98M0.06%+800+12.9%Added
Cary Street Partners Asset Management LLC6,956$1.97M0.69%−93−1.3%Reduced
Shell Asset Management Co6,902$1.95M0.04%−51−0.7%Reduced
Harvest Volatility Management LLC6,868$1.94M0.09%+2,552+59.1%Added
Regentatlantic Capital LLC6,798$1.92M0.06%+121+1.8%Added
High Note Wealth, LLC6,766$1.91M0.69%+11+0.2%Added
Siemens Fonds Invest GmbH6,702$1.90M0.13%+6,702New
Captrust Financial Advisors6,599$1.87M0.02%+557+9.2%Added
Dowling & Yahnke LLC6,564$1.86M0.10%−290−4.2%Reduced
Mogy Joel R Investment Counsel Inc6,500$1.84M0.15%00.0%Unchanged
People's United Financial, Inc.6,495$1.84M0.04%−341−5.0%Reduced
Segantii Capital Management Ltd6,479$1.83M0.06%00.0%Unchanged
Hudson Canyon Capital Management6,325$1.79M1.38%00.0%Unchanged
Essex LLC6,318$1.79M0.50%+6,318New
Oak Associates, Ltd6,305$1.78M0.10%00.0%Unchanged
Verition Fund Management LLC6,202$1.75M0.03%+5,595+921.7%Added
Mizuho Markets Cayman LP6,147$1.74M0.16%+6,147New
American Research & Management Co.6,039$1.71M0.39%−410−6.4%Reduced
Roberts Glore & Co Inc6,019$1.70M0.52%−20−0.3%Reduced
Arabesque Asset Management Ltd6,017$1.70M0.57%+4,317+253.9%Added
Sumitomo Life Insurance Co6,003$1.70M0.05%−254−4.1%Reduced
Brown Brothers Harriman & Co5,894$1.67M0.01%00.0%Unchanged
Marshall Wace North America L.P.5,876$1.66M0.01%−154,056−96.3%Reduced
National Asset Management, Inc.5,764$1.66M0.05%−267−4.4%Reduced
Evergreen Capital Management LLC5,722$1.62M0.07%+117+2.1%Added
Quantamental Technologies LLC5,607$1.59M1.06%+5,607New
Richard Bernstein Advisors LLC5,594$1.58M0.03%+430+8.3%Added
HRT Financial LP5,508$1.56M0.01%−7,531−57.8%Reduced
Berkshire Asset Management LLC5,490$1.55M0.10%−78−1.4%Reduced
Neuberger Berman Group LLC7,894$1.54M0.00%−16−0.2%Reduced
Burney Co5,441$1.54M0.07%−91−1.6%Reduced
Federated Hermes, Inc.5,435$1.54M0.00%−152−2.7%Reduced
Clean Yield Group5,413$1.53M0.54%−1,190−18.0%Reduced
Pinnacle Associates Ltd5,406$1.53M0.03%+764+16.5%Added
Glenview Trust Co5,391$1.53M0.06%−40−0.7%Reduced
Northwestern Mutual Wealth Management Co5,293$1.50M0.00%−37−0.7%Reduced
Whittier Trust Co5,279$1.49M0.03%00.0%Unchanged
Spears Abacus Advisors LLC5,280$1.49M0.11%00.0%Unchanged
Fernwood Investment Management, LLC5,245$1.48M0.51%−15−0.3%Reduced
CIBC World Markets Inc.5,227$1.48M0.01%+2,497+91.5%Added
Ameritas Investment Partners, Inc.5,222$1.48M0.05%−32−0.6%Reduced
Unison Advisors LLC5,078$1.44M0.36%−1,350−21.0%Reduced
Advisors Asset Management, Inc.5,048$1.43M0.02%+55+1.1%Added
Steel Peak Wealth Management LLC5,017$1.42M0.10%+4,411+727.9%Added
Regal Investment Advisors LLC4,972$1.41M0.14%+2,784+127.2%Added
SRB Corp4,859$1.38M0.08%+4,859New
Centiva Capital, LP4,838$1.37M0.11%+2,966+158.4%Added
Financial Advocates Investment Management4,831$1.37M0.10%+3,774+357.0%Added
Quantbot Technologies LP4,810$1.36M0.10%+4,810New
Cresset Asset Management, LLC4,717$1.33M0.02%+1,316+38.7%Added
Cigna Investments Inc4,686$1.33M0.10%−121−2.5%Reduced
Vestcor Inc4,656$1.32M0.05%−337−6.7%Reduced
Virginia Retirement Systems Et Al4,600$1.30M0.01%+900+24.3%Added
Richard P Slaughter Associates Inc4,596$1.30M0.52%+3+0.1%Added
Schonfeld Strategic Advisors LLC4,555$1.29M0.01%−36,179−88.8%Reduced
Heron Bay Capital Management4,556$1.29M0.67%+69+1.5%Added
Cinctive Capital Management LP4,534$1.28M0.07%+4,534New
Wetherby Asset Management Inc4,529$1.28M0.08%+63+1.4%Added
CAPROCK Group, Inc.4,527$1.28M0.11%+234+5.5%Added
Factorial Partners, LLC4,450$1.26M0.86%+2,550+134.2%Added
Silverarc Capital Management, LLC4,389$1.24M0.72%+4,389New
Lazard Asset Management LLC4,310$1.22M0.00%+4,302+53,775.0%Added
Redpoint Investment Management Pty Ltd4,301$1.22M0.10%−103−2.3%Reduced
Wesbanco Bank Inc4,288$1.21M0.05%00.0%Unchanged
NuWave Investment Management, LLC4,277$1.21M1.38%+3,318+346.0%Added
Darwin Advisors, LLC4,250$1.20M0.19%+4,250New
IBM Retirement Fund4,249$1.20M0.09%+15+0.4%Added
World Asset Management Inc4,229$1.20M0.12%−228−5.1%Reduced
Veritable, L.P.4,225$1.20M0.02%−759−15.2%Reduced
Belpointe Asset Management LLC4,229$1.20M0.08%+54+1.3%Added
Investment House LLC4,202$1.19M0.09%00.0%Unchanged
Advisor Partners LLC4,138$1.17M0.08%−368−8.2%Reduced
Advisory Services Network, LLC4,132$1.17M0.04%−176−4.1%Reduced
Regions Financial Corp4,128$1.17M0.01%−1,063−20.5%Reduced
Stratos Wealth Partners, LTD.4,109$1.16M0.03%−107−2.5%Reduced
Infrastructure Capital Advisors, LLC4,000$1.14M0.18%+3,379+544.1%Added
Wrapmanager Inc4,027$1.14M0.30%−65−1.6%Reduced
NorthCoast Asset Management LLC4,006$1.14M0.04%00.0%Unchanged
Cim Investment Mangement Inc4,009$1.14M0.36%+1,286+47.2%Added
Cohen Klingenstein LLC4,000$1.13M0.05%00.0%Unchanged
Estabrook Capital Management4,000$1.13M0.18%00.0%Unchanged
Texas Yale Capital Corp.3,987$1.13M0.06%00.0%Unchanged
Camelot Portfolios, LLC3,950$1.12M0.57%−246−5.9%Reduced
Cetera Investment Advisers3,937$1.11M0.02%−434−9.9%Reduced
Fuller & Thaler Asset Management, Inc.3,921$1.11M0.01%−300−7.1%Reduced
SkyView Investment Advisors, LLC3,894$1.10M0.31%+2,344+151.2%Added