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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 2024

Institutional positions in Biogen Inc. as of Dec 31, 2024. 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
879
−27 vs. Q3 2024
Shares held
132.4M
+2.79M (+2.2%) vs. Q3 2024
Total value
$20.2B
−$4.80B (−19.2%) vs. Q3 2024
New holders
133
300 more added
Sold out
160
322 more reduced

15 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2024: 879 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 2024: $20.2B
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 2024

Shares, value and share of portfolio for each institution holding Biogen Inc.; share changes are against Q3 2024.

Institutions holding BIIB in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Fox Run Management, L.L.C.0$00.00%−7,922−100.0%Sold out
Oddo BHF Asset Management SAS0$00.00%−7,136−100.0%Sold out
Crestline Management, LP0$00.00%−6,750−100.0%Sold out
Hussman Strategic Advisors, Inc.0$00.00%−6,300−100.0%Sold out
AXS Investments LLC0$00.00%−6,185−100.0%Sold out
ISAM Funds (UK) Ltd0$00.00%−5,756−100.0%Sold out
Exane Asset Management0$00.00%−5,000−100.0%Sold out
Mediolanum International Funds Ltd0$00.00%−4,893−100.0%Sold out
Lindenwold Advisors0$00.00%−4,605−100.0%Sold out
Mangrove Partners0$00.00%−4,582−100.0%Sold out
Ramsay, Stattman, Vela & Price, Inc.0$00.00%−4,545−100.0%Sold out
Diversify Advisory Services, LLC0$00.00%−4,719−100.0%Sold out
Twin Tree Management, LP0$00.00%−4,296−100.0%Sold out
Los Angeles Capital Management LLC0$00.00%−4,282−100.0%Sold out
SG Americas Securities, LLC0$00.00%−3,675−100.0%Sold out
Aigen Investment Management, LP0$00.00%−3,520−100.0%Sold out
Deerfield Management Company, L.P. (Series C)0$00.00%−3,504−100.0%Sold out
Oxford Asset Management LLP0$00.00%−3,388−100.0%Sold out
Concurrent Investment Advisors, LLC0$00.00%−3,340−100.0%Sold out
Bridgeway Capital Management, LLC0$00.00%−3,300−100.0%Sold out
MQS Management LLC0$00.00%−3,256−100.0%Sold out
Mutual Advisors, LLC0$00.00%−3,420−100.0%Sold out
Bridgefront Capital, LLC0$00.00%−3,243−100.0%Sold out
Autumn Glory Partners, LLC0$00.00%−3,184−100.0%Sold out
Portside Wealth Group, LLC0$00.00%−2,848−100.0%Sold out
Dark Forest Capital Management LP0$00.00%−2,797−100.0%Sold out
Moran Wealth Management, LLC0$00.00%−2,592−100.0%Sold out
Congress Park Capital LLC0$00.00%−2,505−100.0%Sold out
Simplify Asset Management Inc.0$00.00%−2,470−100.0%Sold out
Three Bridge Wealth Advisors, LLC0$00.00%−2,444−100.0%Sold out
Norden Group LLC0$00.00%−2,424−100.0%Sold out
Prelude Capital Management, LLC0$00.00%−2,400−100.0%Sold out
Tevis Investment Management0$00.00%−2,340−100.0%Sold out
Auxano Advisors, LLC0$00.00%−2,321−100.0%Sold out
Liontrust Investment Partners LLP0$00.00%−1,921−100.0%Sold out
Ameritas Advisory Services, LLC0$00.00%−2,187−100.0%Sold out
Alliance Wealth Advisors, LLC0$00.00%−2,072−100.0%Sold out
American Assets Inc0$00.00%−2,000−100.0%Sold out
nVerses Capital, LLC0$00.00%−2,000−100.0%Sold out
PAX Financial Group, LLC0$00.00%−1,963−100.0%Sold out
Burney Co0$00.00%−1,961−100.0%Sold out
Quotient Wealth Partners, LLC0$00.00%−1,910−100.0%Sold out
Fullcircle Wealth LLC0$00.00%−1,922−100.0%Sold out
Paloma Partners Management Co0$00.00%−1,824−100.0%Sold out
MMBG Investment Advisors Co.0$00.00%−1,800−100.0%Sold out
Legacy Capital Group California, Inc.0$00.00%−1,798−100.0%Sold out
Financial Partners Group, LLC0$00.00%−1,788−100.0%Sold out
David Loasby0$00.00%−1,848−100.0%Sold out
PFG Investments, LLC0$00.00%−1,692−100.0%Sold out
Stonegate Investment Group, LLC0$00.00%−1,666−100.0%Sold out
Buckingham Strategic Partners0$00.00%−1,655−100.0%Sold out
Apollon Wealth Management, LLC0$00.00%−1,642−100.0%Sold out
Regal Investment Advisors LLC0$00.00%−1,633−100.0%Sold out
Valeo Financial Advisors, LLC0$00.00%−1,563−100.0%Sold out
Axq Capital, LP0$00.00%−1,556−100.0%Sold out
Choate Investment Advisors0$00.00%−1,506−100.0%Sold out
Kestra Private Wealth Services, LLC0$00.00%−1,440−100.0%Sold out
AIA Group Ltd0$00.00%−1,411−100.0%Sold out
NorthRock Partners, LLC0$00.00%−1,406−100.0%Sold out
Platform Technology Partners0$00.00%−1,403−100.0%Sold out
Cornell Pochily Investment Advisors, Inc.0$00.00%−1,336−100.0%Sold out
Chiron Capital Management, LLC0$00.00%−1,325−100.0%Sold out
Moneta Group Investment Advisors LLC0$00.00%−1,291−100.0%Sold out
Equitable Holdings, Inc.0$00.00%−1,275−100.0%Sold out
We Are One Seven, LLC0$00.00%−1,274−100.0%Sold out
Grandfield & Dodd, LLC0$00.00%−1,261−100.0%Sold out
MBB Public Markets I LLC0$00.00%−1,260−100.0%Sold out
Baker Avenue Asset Management, LP0$00.00%−1,241−100.0%Sold out
Veriti Management LLC0$00.00%−1,213−100.0%Sold out
Insigneo Advisory Services, LLC0$00.00%−1,207−100.0%Sold out
Sompo Asset Management Co., Ltd.0$00.00%−1,200−100.0%Sold out
Argent Trust Co0$00.00%−1,200−100.0%Sold out
Boltwood Capital Management0$00.00%−1,197−100.0%Sold out
Bell Bank0$00.00%−1,175−100.0%Sold out
Intrust Bank NA0$00.00%−1,167−100.0%Sold out
Culbertson A N & Co Inc0$00.00%−1,165−100.0%Sold out
Sound View Wealth Advisors Group, LLC0$00.00%−1,164−100.0%Sold out
Nwam LLC0$00.00%−1,152−100.0%Sold out
NewEdge Wealth, LLC0$00.00%−1,142−100.0%Sold out
Resources Investment Advisors, LLC.0$00.00%−1,137−100.0%Sold out
Independent Financial Group, LLC0$00.00%−1,135−100.0%Sold out
Waters Parkerson & Co., LLC0$00.00%−1,113−100.0%Sold out
Wedbush Securities Inc0$00.00%−1,103−100.0%Sold out
Pitcairn Co0$00.00%−1,099−100.0%Sold out
McIntyre Freedman & Flynn Investment Advisers Inc0$00.00%−1,089−100.0%Sold out
Conning Inc.0$00.00%−1,066−100.0%Sold out
Prospera Financial Services Inc0$00.00%−1,048−100.0%Sold out
Central Bank & Trust Co0$00.00%−1,045−100.0%Sold out
Intact Investment Management Inc.0$00.00%−1,040−100.0%Sold out
Waldron Private Wealth LLC0$00.00%−1,035−100.0%Sold out
Investors Asset Management of Georgia Inc0$00.00%−1,032−100.0%Sold out
Baldwin Brothers Inc0$00.00%−695−100.0%Sold out
Oakworth Capital, Inc.0$00.00%−659−100.0%Sold out
Reuter James Wealth Management, LLC0$00.00%−648−100.0%Sold out
GHP Investment Advisors, Inc.0$00.00%−638−100.0%Sold out
Catalyst Funds Management Pty Ltd0$00.00%−600−100.0%Sold out
Alta Advisers Ltd0$00.00%−500−100.0%Sold out
Gilliland Jeter Wealth Management LLC0$00.00%−460−100.0%Sold out
NBC Securities, Inc.0$00.00%−460−100.0%Sold out
Roberts Capital Advisors, LLC0$00.00%−438−100.0%Sold out