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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; 1,046 institutions reported holding it in 13F filings for Q2 2026, worth $30.7B in total; no superinvestor holds it.

13F holders, Q1 2023

Institutional positions in Biogen Inc. as of Mar 31, 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
1,004
−11 vs. Q4 2022
Shares held
127.9M
+3.08M (+2.5%) vs. Q4 2022
Total value
$35.0B
+$421.8M (+1.2%) vs. Q4 2022
New holders
88
342 more added
Sold out
99
365 more reduced

18 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2022: 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 2023: 1,004 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: 908 institutionsQ4 2025: 1,001 institutionsQ1 2026: 1,014 institutionsQ2 2026: 1,046 institutions
Value heldQ1 2023: $35.0B
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 20261,046$30.7B
Q1 20261,014$24.7B
Q4 20251,001$24.6B
Q3 2025908$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 2023

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q4 2022.

Institutions holding BIIB in Q1 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Truvestments Capital LLC0$00.00%−12−100.0%Sold out
Jones Financial Companies LLLP0$00.00%−6−100.0%Sold out
Red Tortoise LLC0$00.00%−7−100.0%Sold out
Comerica Bank––––Not filed
Seeyond––––Not filed
Alaska Permanent Fund Corp––––Not filed
CoreCap Advisors, LLC––––Not filed
Allstate Investment Management Co––––Not filed
Capital Financial Services, LLC––––Not filed
Crosspoint Capital Strategies, LLC––––Not filed
Icon Wealth Advisors, LLC––––Not filed
Laurel Wealth Advisors, Inc.––––Not filed
YorkBridge Wealth Partners, LLC––––Not filed
Telemetry Investments, L.L.C.––––Not filed
Gofen & Glossberg LLC––––Not filed
Probity Advisors, Inc.––––Not filed
Burleson & Company, LLC––––Not filed
Heritage Wealth Management, LLC––––Not filed
Trustcore Financial Services, LLC––––Not filed
Cornerstone Planning Group LLC––––Not filed
Sargent Bickham Lagudis LLC––––Not filed