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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, Q1 2025

Institutional positions in Biogen Inc. as of Mar 31, 2025. 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
882
+16 vs. Q4 2024
Shares held
129.8M
−2.03M (−1.5%) vs. Q4 2024
Total value
$17.7B
−$2.41B (−11.9%) vs. Q4 2024
New holders
123
331 more added
Sold out
107
273 more reduced

13 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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 holdersQ1 2025: 882 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 heldQ1 2025: $17.7B
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, Q1 2025

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2024.

Institutions holding BIIB in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
First Foundation Advisors0$00.00%−11,352−100.0%Sold out
Eisler Capital Management Ltd.0$00.00%−10,611−100.0%Sold out
Canada Post Corp Registered Pension Plan0$00.00%−9,718−100.0%Sold out
Quantitative Investment Management, LLC0$00.00%−8,918−100.0%Sold out
Symmetry Investments LP0$00.00%−8,070−100.0%Sold out
Varma Mutual Pension Insurance Co0$00.00%−7,000−100.0%Sold out
Win Advisors, Inc0$00.00%−6,686−100.0%Sold out
Sherbrooke Park Advisers LLC0$00.00%−4,464−100.0%Sold out
GeoWealth Management, LLC0$00.00%−3,903−100.0%Sold out
Phoenix Holdings Ltd.0$00.00%−3,608−100.0%Sold out
Tobam0$00.00%−3,358−100.0%Sold out
Frank, Rimerman Advisors LLC0$00.00%−3,337−100.0%Sold out
Advisor OS, LLC0$00.00%−2,819−100.0%Sold out
Atom Investors LP0$00.00%−2,745−100.0%Sold out
Chicago Partners Investment Group LLC0$00.00%−2,445−100.0%Sold out
Envestnet Portfolio Solutions, Inc.0$00.00%−2,374−100.0%Sold out
MJP Associates Inc0$00.00%−2,347−100.0%Sold out
BancorpSouth Bank0$00.00%−2,281−100.0%Sold out
Virtus ETF Advisers LLC0$00.00%−2,251−100.0%Sold out
CAPROCK Group, Inc.0$00.00%−2,007−100.0%Sold out
Smith Group Asset Management, LLC0$00.00%−2,000−100.0%Sold out
Poinciana Advisors Group, LLC0$00.00%−1,931−100.0%Sold out
Centiva Capital, LP0$00.00%−1,858−100.0%Sold out
Vinva Investment Management Ltd0$00.00%−1,874−100.0%Sold out
Cary Street Partners Financial LLC0$00.00%−1,742−100.0%Sold out
Greenland Capital Management LP0$00.00%−1,730−100.0%Sold out
Wealthspire Advisors, LLC0$00.00%−1,712−100.0%Sold out
Atria Wealth Solutions, Inc.0$00.00%−1,620−100.0%Sold out
Bleakley Financial Group, LLC0$00.00%−1,608−100.0%Sold out
Basepoint Wealth LLC0$00.00%−1,590−100.0%Sold out
Clearbridge Investments, LLC0$00.00%−1,584−100.0%Sold out
Citizens Financial Group Inc0$00.00%−1,545−100.0%Sold out
Beacon Pointe Advisors, LLC0$00.00%−1,537−100.0%Sold out
Sovereign Investment Advisors, LLC0$00.00%−1,520−100.0%Sold out
Kingswood Wealth Advisors, LLC0$00.00%−1,509−100.0%Sold out
B&D White Capital Company, LLC0$00.00%−1,500−100.0%Sold out
Berkshire Asset Management LLC0$00.00%−1,568−100.0%Sold out
Cigna Investments Inc0$00.00%−1,494−100.0%Sold out
Western Wealth Management, LLC0$00.00%−1,484−100.0%Sold out
Kapitalo Investimentos Ltda0$00.00%−1,472−100.0%Sold out
IFG Advisory, LLC0$00.00%−1,471−100.0%Sold out
Marshall Financial Group LLC0$00.00%−1,468−100.0%Sold out
Prasad Wealth Partners, LLC0$00.00%−1,450−100.0%Sold out
Saratoga Research & Investment Management0$00.00%−1,448−100.0%Sold out
Allianz SE0$00.00%−1,459−100.0%Sold out
United Bank0$00.00%−1,423−100.0%Sold out
Israel Discount Bank of New York0$00.00%−1,405−100.0%Sold out
ICONIQ Capital, LLC0$00.00%−1,360−100.0%Sold out
Regions Financial Corp0$00.00%−1,354−100.0%Sold out
MONECO Advisors, LLC0$00.00%−1,341−100.0%Sold out
RSM US Wealth Management LLC0$00.00%−1,360−100.0%Sold out
Spirepoint Private Client, LLC0$00.00%−1,338−100.0%Sold out
Moors & Cabot, Inc.0$00.00%−1,335−100.0%Sold out
Mengis Capital Management, Inc.0$00.00%−1,330−100.0%Sold out
Wynn Capital, LLC0$00.00%−1,316−100.0%Sold out
BankPlus Trust Department0$00.00%−694−100.0%Sold out
Vista Private Wealth Partners. LLC0$00.00%−538−100.0%Sold out
MEAG MUNICH ERGO, Kapitalanlagegesellschaft mbH0$00.00%−518−100.0%Sold out
Provenance Wealth Advisors, LLC0$00.00%−500−100.0%Sold out
Sunbelt Securities, Inc.0$00.00%−477−100.0%Sold out
Wingate Wealth Advisors, Inc.0$00.00%−350−100.0%Sold out
Washington Trust Co0$00.00%−312−100.0%Sold out
CoreFirst Bank & Trust0$00.00%−304−100.0%Sold out
Cary Street Partner Investment Advisory LLC0$00.00%−195−100.0%Sold out
Lee Danner & Bass Inc0$00.00%−161−100.0%Sold out
Mattson Financial Services, LLC0$00.00%−100−100.0%Sold out
Nelson, Van Denburg & Campbell Wealth Management Group, LLC0$00.00%−111−100.0%Sold out
Venturi Wealth Management, LLC0$00.00%−107−100.0%Sold out
Pension & Wealth Management Advisors, Inc.0$00.00%−100−100.0%Sold out
Raleigh Capital Management Inc.0$00.00%−71−100.0%Sold out
EnRich Financial Partners LLC0$00.00%−66−100.0%Sold out
Crews Bank & Trust0$00.00%−46−100.0%Sold out
Avalon Trust Co0$00.00%−42−100.0%Sold out
Coastline Trust Co0$00.00%−37−100.0%Sold out
University of Illinois Foundation0$00.00%−25−100.0%Sold out
Clear Street Markets LLC0$00.00%−24−100.0%Sold out
Aster Capital Management (DIFC) Ltd0$00.00%−18−100.0%Sold out
Iron Horse Wealth Management, LLC0$00.00%−15−100.0%Sold out
Kayne Anderson Rudnick Investment Management LLC0$00.00%−12−100.0%Sold out
Carolinas Wealth Consulting LLC0$00.00%−12−100.0%Sold out
Eagle Bay Advisors LLC0$00.00%−9−100.0%Sold out
Cranbrook Wealth Management, LLC0$00.00%−7−100.0%Sold out
Coppell Advisory Solutions LLC0$00.00%−7−100.0%Sold out
TFC Financial Management0$00.00%−3−100.0%Sold out
Capital A Wealth Management, LLC0$00.00%−3−100.0%Sold out
Stance Capital LLC0$00.00%−3−100.0%Sold out
Ancora Advisors, LLC0$00.00%−2−100.0%Sold out
Parkworth Wealth Management, Inc.0$00.00%−1−100.0%Sold out
Pacific Center for Financial Services0$00.00%0Sold out
Nuveen Asset Management, LLC––––Not filed
Swedbank AB––––Not filed
Northwest Bank & Trust Co––––Not filed
Wetherby Asset Management Inc––––Not filed
Fernwood Investment Management, LLC––––Not filed
Vise Technologies, Inc.––––Not filed
Cassady Schiller Wealth Management, LLC––––Not filed
Financial Gravity Companies, Inc.––––Not filed
Kiely Wealth Advisory Group, Inc.––––Not filed
Global Retirement Partners, LLC––––Not filed
Zions Bancorporation, N.A.––––Not filed