Skip to main content
Livermore
Livermore
ZHEN

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
Focus Financial Network, Inc.2,782$380.7K0.02%00.0%Unchanged
Mather Group, LLC.2,767$378.7K0.00%+1,039+60.1%Added
Kennondale Capital Management LLC2,760$377.7K0.41%00.0%Unchanged
R Squared Ltd2,760$377.7K0.40%+1,970+249.4%Added
Massachusetts Wealth Management2,759$377.5K0.26%+19+0.7%Added
Marathon Trading Investment Management LLC2,750$376.3K0.20%−11,783−81.1%Reduced
Klingenstein Fields & Co LP2,731$373.7K0.02%00.0%Unchanged
Signaturefd, LLC2,697$369.1K0.01%+605+28.9%Added
Enterprise Bank & Trust Co2,663$364.4K0.14%−201−7.0%Reduced
Advanced Portfolio Management, LLC2,641$361.4K0.73%+2,641New
Prime Capital Investment Advisors, LLC2,636$360.7K0.00%−638−19.5%Reduced
Westside Investment Management, Inc.2,660$359.4K0.08%+1,310+97.0%Added
Eagle Global Advisors LLC2,625$359.2K0.01%00.0%Unchanged
Integrated Quantitative Investments LLC2,600$355.8K0.18%−60−2.3%Reduced
MUFG Securities Americas Inc.2,591$354.6K0.04%+440+20.5%Added
S&CO Inc2,572$351.0K0.02%+2,572New
State of Wyoming2,561$350.4K0.05%+56+2.2%Added
Teza Capital Management LLC2,551$349.1K0.16%+2,551New
Vestcor Inc2,543$348.0K0.01%+7+0.3%Added
Ocean Capital Management, LLC2,540$347.6K0.08%−20−0.8%Reduced
Oxford Asset Management LLP2,529$346.1K0.16%+2,529New
Prudential PLC2,508$343.2K0.00%00.0%Unchanged
Tema ETFs LLC2,501$342.2K0.10%00.0%Unchanged
NJ State Employees Deferred Compensation Plan2,500$342.1K0.04%00.0%Unchanged
Alps Advisors Inc2,500$342.1K0.00%+2,500New
O'Shaughnessy Asset Management, LLC2,476$338.8K0.00%+806+48.3%Added
Flagship Harbor Advisors, LLC2,440$333.9K0.02%+887+57.1%Added
TFB Advisors LLC2,439$333.8K0.10%+5+0.2%Added
Huntington National Bank2,433$332.9K0.00%+19+0.8%Added
Legacy Wealth Asset Management, LLC2,420$331.2K0.09%+591+32.3%Added
Allegheny Financial Group LTD2,419$331.1K0.08%−7−0.3%Reduced
Tower Trust & Investment Co2,727$330.1K0.27%+2,727New
Oracle Investment Management Inc2,412$330.1K0.21%00.0%Unchanged
HB Wealth Management, LLC2,409$329.6K0.00%+820+51.6%Added
Exchange Traded Concepts, LLC2,405$329.1K0.01%+119+5.2%Added
Landscape Capital Management, L.L.C.2,403$328.8K0.03%+2,403New
Triangle Securities Wealth Management2,380$325.7K0.08%−20−0.8%Reduced
GWM Advisors LLC2,357$322.5K0.00%−22−0.9%Reduced
Asahi Life Asset Management Co., Ltd.2,345$320.9K0.21%+60+2.6%Added
Virtus Investment Advisers, Inc.2,311$316.2K0.09%+2,311New
Fayez Sarofim & Co2,300$314.7K0.00%00.0%Unchanged
Trust Co of Toledo NA2,264$309.8K0.04%+252+12.5%Added
TD Waterhouse Canada Inc.2,335$308.1K0.00%−7,425−76.1%Reduced
Philadelphia Trust Co2,250$308.0K0.03%+250+12.5%Added
Harbor Capital Advisors, Inc.2,253$308.0K0.01%+2,253New
Sanctuary Advisors, LLC2,239$306.4K0.00%+116+5.5%Added
Stratos Wealth Partners, LTD.2,236$306.0K0.00%−460−17.1%Reduced
National Asset Management, Inc.2,228$304.9K0.01%−115−4.9%Reduced
Sax Wealth Advisors, LLC2,210$302.4K0.02%+7+0.3%Added
Integrated Advisors Network LLC2,180$298.3K0.02%+685+45.8%Added
Avestar Capital, LLC2,175$297.6K0.03%−70−3.1%Reduced
Meiji Yasuda Asset Management Co Ltd.2,163$296.0K0.01%+203+10.4%Added
Horizon Investments, LLC2,158$295.3K0.01%+117+5.7%Added
MBB Public Markets I LLC2,150$294.2K0.03%+2,150New
Evercore Wealth Management, LLC2,142$293.1K0.00%00.0%Unchanged
Callan Capital, LLC2,131$291.6K0.02%+56+2.7%Added
White Lighthouse Investment Management Inc.2,125$290.8K0.05%+2,125New
Flputnam Investment Management Co2,080$284.6K0.01%+189+10.0%Added
Integrated Wealth Concepts LLC2,080$284.6K0.00%−2,399−53.6%Reduced
Advisory Services Network, LLC2,068$283.0K0.01%−654−24.0%Reduced
Proathlete Wealth Management LLC2,067$282.8K0.10%+223+12.1%Added
Stephens Inc2,056$281.3K0.00%−1,089−34.6%Reduced
Capital Investment Advisors, LLC2,053$280.9K0.01%+10.0%Added
Estabrook Capital Management2,033$278.2K0.04%00.0%Unchanged
Personal Cfo Solutions, LLC2,027$277.4K0.06%+482+31.2%Added
Independent Advisor Alliance2,008$274.7K0.01%−461−18.7%Reduced
Heritage Wealth Advisors2,000$273.7K0.01%00.0%Unchanged
Northwest & Ethical Investments L.P.2,000$273.7K0.01%00.0%Unchanged
David Loasby2,408$273.0K0.03%+2,408New
SBI Securities Co., Ltd.1,975$270.3K0.01%+184+10.3%Added
Generali Investments, Management Co LLC1,962$268.5K0.08%−716−26.7%Reduced
Cresset Asset Management, LLC1,960$268.2K0.00%+619+46.2%Added
Bayesian Capital Management, LP1,940$265.5K0.04%+1,940New
Navellier & Associates Inc2,164$263.6K0.04%00.0%Unchanged
Kestra Advisory Services, LLC1,913$261.8K0.00%−236−11.0%Reduced
Hennion & Walsh Asset Management, Inc.1,891$258.8K0.01%−192−9.2%Reduced
Forbes J M & Co LLP1,869$255.8K0.02%00.0%Unchanged
GAMMA Investing LLC1,862$254.8K0.02%+1,464+367.8%Added
Mission Wealth Management, LP1,850$253.2K0.01%−471−20.3%Reduced
Allegiance Financial Group Advisory Services LLC1,847$252.7K0.08%+1,847New
Peapack Gladstone Financial Corp1,843$252.0K0.00%+25+1.4%Added
Rock Point Advisors, LLC1,840$251.8K0.08%00.0%Unchanged
Y-Intercept (Hong Kong) Ltd1,838$251.5K0.02%−13,310−87.9%Reduced
Nicolet Bankshares Inc1,816$248.5K0.05%−149−7.6%Reduced
Cura Wealth Advisors, LLC1,812$248.0K0.10%00.0%Unchanged
Boothbay Fund Management, LLC1,810$247.7K0.01%+1,810New
Trail Ridge Investment Advisors, LLC1,807$247.3K0.13%00.0%Unchanged
Wiley Bros.-Aintree Capital, LLC1,783$247.0K0.00%+62+3.6%Added
Perpetual Ltd1,797$245.9K0.00%+1,797New
MQS Management LLC1,787$244.5K0.14%+1,787New
Wedmont Private Capital2,109$242.9K0.01%−1,561−42.5%Reduced
LGT Fund Management Co Ltd.1,744$238.6K0.02%00.0%Unchanged
AE Wealth Management LLC1,731$236.8K0.00%+141+8.9%Added
Parcion Private Wealth LLC1,724$235.9K0.02%+1,724New
Sumitomo Life Insurance Co1,711$234.1K0.01%−19−1.1%Reduced
Atria Investments LLC1,697$232.2K0.00%−126−6.9%Reduced
Kaufman Rossin Wealth, LLC1,690$231.3K0.17%+1,690New
Resources Investment Advisors, LLC.1,688$231.0K0.00%+1,688New
Hancock Whitney Corp1,680$229.9K0.01%−130−7.2%Reduced
Trust Asset Management LLC1,675$229.2K0.02%+13+0.8%Added