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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
Rock Point Advisors, LLC1,840$251.8K0.08%00.0%Unchanged
Peapack Gladstone Financial Corp1,843$252.0K0.00%+25+1.4%Added
Allegiance Financial Group Advisory Services LLC1,847$252.7K0.08%+1,847New
Mission Wealth Management, LP1,850$253.2K0.01%−471−20.3%Reduced
GAMMA Investing LLC1,862$254.8K0.02%+1,464+367.8%Added
Forbes J M & Co LLP1,869$255.8K0.02%00.0%Unchanged
Hennion & Walsh Asset Management, Inc.1,891$258.8K0.01%−192−9.2%Reduced
Kestra Advisory Services, LLC1,913$261.8K0.00%−236−11.0%Reduced
Navellier & Associates Inc2,164$263.6K0.04%00.0%Unchanged
Bayesian Capital Management, LP1,940$265.5K0.04%+1,940New
Cresset Asset Management, LLC1,960$268.2K0.00%+619+46.2%Added
Generali Investments, Management Co LLC1,962$268.5K0.08%−716−26.7%Reduced
SBI Securities Co., Ltd.1,975$270.3K0.01%+184+10.3%Added
David Loasby2,408$273.0K0.03%+2,408New
Heritage Wealth Advisors2,000$273.7K0.01%00.0%Unchanged
Northwest & Ethical Investments L.P.2,000$273.7K0.01%00.0%Unchanged
Independent Advisor Alliance2,008$274.7K0.01%−461−18.7%Reduced
Personal Cfo Solutions, LLC2,027$277.4K0.06%+482+31.2%Added
Estabrook Capital Management2,033$278.2K0.04%00.0%Unchanged
Capital Investment Advisors, LLC2,053$280.9K0.01%+10.0%Added
Stephens Inc2,056$281.3K0.00%−1,089−34.6%Reduced
Proathlete Wealth Management LLC2,067$282.8K0.10%+223+12.1%Added
Advisory Services Network, LLC2,068$283.0K0.01%−654−24.0%Reduced
Integrated Wealth Concepts LLC2,080$284.6K0.00%−2,399−53.6%Reduced
Flputnam Investment Management Co2,080$284.6K0.01%+189+10.0%Added
White Lighthouse Investment Management Inc.2,125$290.8K0.05%+2,125New
Callan Capital, LLC2,131$291.6K0.02%+56+2.7%Added
Evercore Wealth Management, LLC2,142$293.1K0.00%00.0%Unchanged
MBB Public Markets I LLC2,150$294.2K0.03%+2,150New
Horizon Investments, LLC2,158$295.3K0.01%+117+5.7%Added
Meiji Yasuda Asset Management Co Ltd.2,163$296.0K0.01%+203+10.4%Added
Avestar Capital, LLC2,175$297.6K0.03%−70−3.1%Reduced
Integrated Advisors Network LLC2,180$298.3K0.02%+685+45.8%Added
Sax Wealth Advisors, LLC2,210$302.4K0.02%+7+0.3%Added
National Asset Management, Inc.2,228$304.9K0.01%−115−4.9%Reduced
Stratos Wealth Partners, LTD.2,236$306.0K0.00%−460−17.1%Reduced
Sanctuary Advisors, LLC2,239$306.4K0.00%+116+5.5%Added
Philadelphia Trust Co2,250$308.0K0.03%+250+12.5%Added
Harbor Capital Advisors, Inc.2,253$308.0K0.01%+2,253New
TD Waterhouse Canada Inc.2,335$308.1K0.00%−7,425−76.1%Reduced
Trust Co of Toledo NA2,264$309.8K0.04%+252+12.5%Added
Fayez Sarofim & Co2,300$314.7K0.00%00.0%Unchanged
Virtus Investment Advisers, Inc.2,311$316.2K0.09%+2,311New
Asahi Life Asset Management Co., Ltd.2,345$320.9K0.21%+60+2.6%Added
GWM Advisors LLC2,357$322.5K0.00%−22−0.9%Reduced
Triangle Securities Wealth Management2,380$325.7K0.08%−20−0.8%Reduced
Landscape Capital Management, L.L.C.2,403$328.8K0.03%+2,403New
Exchange Traded Concepts, LLC2,405$329.1K0.01%+119+5.2%Added
HB Wealth Management, LLC2,409$329.6K0.00%+820+51.6%Added
Oracle Investment Management Inc2,412$330.1K0.21%00.0%Unchanged
Tower Trust & Investment Co2,727$330.1K0.27%+2,727New
Allegheny Financial Group LTD2,419$331.1K0.08%−7−0.3%Reduced
Legacy Wealth Asset Management, LLC2,420$331.2K0.09%+591+32.3%Added
Huntington National Bank2,433$332.9K0.00%+19+0.8%Added
TFB Advisors LLC2,439$333.8K0.10%+5+0.2%Added
Flagship Harbor Advisors, LLC2,440$333.9K0.02%+887+57.1%Added
O'Shaughnessy Asset Management, LLC2,476$338.8K0.00%+806+48.3%Added
NJ State Employees Deferred Compensation Plan2,500$342.1K0.04%00.0%Unchanged
Alps Advisors Inc2,500$342.1K0.00%+2,500New
Tema ETFs LLC2,501$342.2K0.10%00.0%Unchanged
Prudential PLC2,508$343.2K0.00%00.0%Unchanged
Oxford Asset Management LLP2,529$346.1K0.16%+2,529New
Ocean Capital Management, LLC2,540$347.6K0.08%−20−0.8%Reduced
Vestcor Inc2,543$348.0K0.01%+7+0.3%Added
Teza Capital Management LLC2,551$349.1K0.16%+2,551New
State of Wyoming2,561$350.4K0.05%+56+2.2%Added
S&CO Inc2,572$351.0K0.02%+2,572New
MUFG Securities Americas Inc.2,591$354.6K0.04%+440+20.5%Added
Integrated Quantitative Investments LLC2,600$355.8K0.18%−60−2.3%Reduced
Eagle Global Advisors LLC2,625$359.2K0.01%00.0%Unchanged
Westside Investment Management, Inc.2,660$359.4K0.08%+1,310+97.0%Added
Prime Capital Investment Advisors, LLC2,636$360.7K0.00%−638−19.5%Reduced
Advanced Portfolio Management, LLC2,641$361.4K0.73%+2,641New
Enterprise Bank & Trust Co2,663$364.4K0.14%−201−7.0%Reduced
Signaturefd, LLC2,697$369.1K0.01%+605+28.9%Added
Klingenstein Fields & Co LP2,731$373.7K0.02%00.0%Unchanged
Marathon Trading Investment Management LLC2,750$376.3K0.20%−11,783−81.1%Reduced
Massachusetts Wealth Management2,759$377.5K0.26%+19+0.7%Added
Kennondale Capital Management LLC2,760$377.7K0.41%00.0%Unchanged
R Squared Ltd2,760$377.7K0.40%+1,970+249.4%Added
Mather Group, LLC.2,767$378.7K0.00%+1,039+60.1%Added
Focus Financial Network, Inc.2,782$380.7K0.02%00.0%Unchanged
Richwood Investment Advisors, LLC2,783$380.8K0.32%−348−11.1%Reduced
Blackhawk Capital Partners LLC.2,789$381.6K0.20%+2,789New
KCM Investment Advisors LLC2,839$388.5K0.01%−105−3.6%Reduced
Sectoral Asset Management Inc2,855$390.7K0.30%−997−25.9%Reduced
Eqis Capital Management, Inc.2,863$391.8K0.03%+839+41.5%Added
Claro Advisors LLC2,877$393.7K0.05%+2,877New
Stevens Capital Management LP2,884$395.0K0.10%+2,884New
Cim Investment Mangement Inc2,887$395.1K0.09%−3−0.1%Reduced
APG Asset Management US Inc.3,010$397.4K0.00%00.0%Unchanged
Hunter Associates Investment Management LLC2,906$398.0K0.06%+920+46.3%Added
Fiduciary Trust Co2,935$401.6K0.01%+335+12.9%Added
Greenleaf Trust2,955$404.4K0.00%−2,110−41.7%Reduced
Gsa Capital Partners LLP2,963$405.0K0.04%−11,483−79.5%Reduced
TownSquare Capital, LLC2,985$408.5K0.00%+174+6.2%Added
MYDA Advisors LLC3,000$410.5K0.15%−9,000−75.0%Reduced
Sequoia Financial Advisors, LLC3,017$412.8K0.00%−9−0.3%Reduced
Bessemer Group Inc3,037$415.0K0.00%+729+31.6%Added
Congress Wealth Management LLC3,033$415.6K0.00%+3,033New