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Disclosery

BIIB BIOGEN INC

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Stock (common), issuer CIK 875045

851 managers (868 13F filers) reported a position in BIIB shares at 2025-06-30, 130,117,541 shares in all. 81 filers opened a position and 101 filers sold out during the quarter.

Managers
851
13F filers
868
New
81
Added
343
Reduced
265
Sold out
101
Shares held by filers
130,117,541

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Impax Asset Management Group plcin group Impax Asset Management Group …33,526$4.21M0.02%-2,32013F-HRTimelineGroup
MEITAV INVESTMENT HOUSE LTDin group MEITAV INVESTMENT HOUSE LTD33,400$4.19M0.06%013F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC33,041$4.15M0.01%-4,21313F-HRTimelineGroup
Engineers Gate Manager LP33,008$4.15M0.05%-43,95013F-HRTimeline
Orion Investment Co32,901$4.13M1.46%+1,24913F-HRTimeline
China Universal Asset Management Co., L…32,757$4.11M0.39%-30313F-HRTimeline
USS Investment Management Ltd31,870$4M0.02%+37213F-HRTimeline
PDT Partners, LLC31,664$3.98M0.22%new13F-HRTimeline
Retirement Systems of Alabama31,442$3.95M0.01%-152,10913F-HRTimeline
FARMERS TRUST CO29,527$3.71M0.69%+14,66613F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…27,867$3.7M0.01%+8,81813F-HRTimeline
CIBC WORLD MARKETS CORP28,878$3.63M0.02%+11,25213F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC28,551$3.59M<0.01%+1,07113F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC28,312$3.56M0.02%+25,83613F-HRTimeline
AMALGAMATED BANK28,300$3.55M0.03%-15413F-HRTimeline
CSM Advisors, LLC27,459$3.45M0.1%-40013F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS27,427$3.44M0.01%+60213F-HRTimelineGroup
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…27,421$3.44M0.03%+3,20013F-HRTimeline
PROFUND ADVISORS LLC27,174$3.41M0.12%+40413F-HRTimeline
CWA Asset Management Group, LLC26,611$3.34M0.14%+4,14313F-HRTimeline
Mn Services Vermogensbeheer B.V.26,600$3.34M0.02%new13F-HRTimeline
Glenmede Investment Management, LP26,340$3.31M0.02%13F-HRTimeline
Jain Global LLC26,046$3.27M0.05%+2,67013F-HRTimeline
FORSTA AP-FONDEN24,200$3.04M0.02%+1,20013F-HRTimeline
Ilmarinen Mutual Pension Insurance Co24,000$3.01M0.02%013F-HRTimeline
Utah Retirement Systems23,996$3.01M0.03%-11913F-HRTimeline
Verition Fund Management LLC23,313$2.93M0.02%-215,63913F-HRTimeline
MIRAE ASSET SECURITIES (USA) INC.23,059$2.9M0.13%+1,60513F-HRTimeline
BRITISH COLUMBIA INVESTMENT MANAGEMENT …23,034$2.89M0.02%-4,83913F-HRTimeline
Headlands Technologies LLC22,791$2.86M0.34%-1,97813F-HRTimeline
SG Americas Securities, LLC22,470$2.82M0.01%-697,32313F-HRTimeline
Andra AP-fonden22,400$2.81M0.04%-23,80013F-HRTimeline
Police & Firemen's Retirement System of…22,358$2.81M0.03%+1,24813F-HRTimeline
New York Life Investment Management LLCin group New York Life Investment Mana…22,336$2.81M0.03%+6713F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO22,028$2.77M<0.01%+3,71313F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC21,984$2.76M0.02%+2,12013F-HRTimelineGroup
Ikarian Capital, LLCin group Ikarian Capital, LLC21,516$2.7M0.89%new13F-HRTimelineGroup
BOKF, NAin group BOKF, NA21,411$2.69M0.04%-1,25113F-HRTimelineGroup
XPONANCE LLC21,379$2.68M0.02%+28113F-HRTimeline
ICICI Prudential Asset Management Co Ltd21,288$2.67M0.33%-6,94113F-HRTimeline
Privium Fund Management B.V.20,500$2.67M0.58%new13F-HRTimeline
COMERICA BANK21,109$2.65M0.01%-96413F-HRTimeline
Arlington Partners LLCin group Arlington Trust Co LLC20,417$2.56M0.95%-7,30813F-HRTimelineGroup
Old North State Wealth Management, LLC20,224$2.54M1.32%+32013F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC19,751$2.48M0.03%-2,95613F-HRTimeline
Kintegral Advisory, LLCin group Kintegral Advisory, LLC19,340$2.43M0.22%-2913F-HRTimelineGroup
Janney Montgomery Scott LLC19,099$2.4M0.01%+1,15813F-HRTimeline
State of Alaska, Department of Revenue19,059$2.39M0.03%-66013F-HRTimeline
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise18,480$2.32M0.09%+8,64813F-HRTimelineGroup
UniSuper Management Pty Ltd18,413$2.31M0.02%+74213F-HRTimeline
Louisiana State Employees Retirement Sy…18,400$2.31M0.04%-20013F-HRTimeline
NorthCoast Asset Management LLC18,321$2.3M0.01%+4,10513F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson18,260$2.29M<0.01%-2,56813F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…18,195$2.29M<0.01%+3,54413F-HR/ATimelineGroup
Leo Wealth, LLC18,123$2.28M0.18%+28813F-HRTimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…18,103$2.27M0.02%-5513F-HRTimelineGroup
TRIGLAV INVESTMENTS, D.O.O.18,027$2.26M0.16%013F-HRTimeline
INSPIRE TRUST CO, N.A.18,000$2.26M0.47%+3,70013F-HRTimeline
HOURGLASS CAPITAL, LLC17,970$2.26M0.56%new13F-HRTimeline
Elo Mutual Pension Insurance Co17,934$2.25M0.05%+42613F-HRTimeline
SHELTON CAPITAL MANAGEMENT17,368$2.18M0.05%-3,54113F-HRTimeline
PEAK6 LLCin group PEAK6 LLC17,286$2.17M0.07%-13,33613F-HR/ATimelineGroup
US BANCORP \DE\in group US BANCORP \DE\17,109$2.15M<0.01%-8,83713F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…16,835$2.11M0.02%-22413F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.16,550$2.08M0.06%new13F-HRTimelineGroup
Lombard Odier Asset Management (Switzer…16,430$2.06M0.1%-4,62213F-HRTimeline
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA16,334$2.05M<0.01%+2313F-HRTimelineGroup
Point72 (DIFC) Ltd16,301$2.05M0.16%-33,54813F-HRTimeline
OP Asset Management Ltd16,246$2.04M0.03%+81113F-HR/ATimeline
iA Global Asset Management Inc.16,224$2.04M0.03%-2,11813F-HRTimeline
Edgestream Partners, L.P.16,164$2.03M0.06%-68613F-HRTimeline
SYNOVUS FINANCIAL CORP15,965$2.01M0.02%-1,96313F-HRTimeline
M&T Bank Corpin group M&T Bank Corp15,502$1.95M0.01%+3,20013F-HRTimelineGroup
CLARK ESTATES INC/NY15,300$1.92M0.43%+3,50413F-HRTimeline
Avanza Fonder AB15,287$1.92M0.06%013F-HRTimeline
FULLER & THALER ASSET MANAGEMENT, INC.14,899$1.87M0.01%+6,23113F-HRTimeline
BLAIR WILLIAM & CO/IL14,844$1.86M0.01%+1,56113F-HRTimeline
Cinctive Capital Management LP14,802$1.86M0.1%+6,90813F-HRTimeline
STONERIDGE INVESTMENT PARTNERS LLC14,599$1.83M1.38%013F-HRTimeline
CAPTRUST FINANCIAL ADVISORS14,595$1.83M<0.01%+2,01313F-HRTimeline
OSTRUM ASSET MANAGEMENT14,525$1.82M0.09%-18313F-HRTimeline
GABELLI FUNDS LLCin group GAMCO Investors (Gabelli)14,100$1.77M0.01%013F-HRTimelineGroup
Qsemble Capital Management, LP13,909$1.75M0.17%-55813F-HRTimeline
E Fund Management Co., Ltd.13,810$1.73M0.08%+42313F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP13,767$1.73M<0.01%-46,56813F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…13,456$1.69M0.02%+5,04013F-HRTimelineGroup
Vontobel Holding Ltd.in group Vontobel Holding Ltd.13,448$1.69M0.01%-2,49113F-HRTimelineGroup
SPRUCEGROVE INVESTMENT MANAGEMENT LTD13,310$1.67M0.14%-80013F-HRTimeline
Kentucky Retirement Systemsgroup of 2 filers holding13,294$1.67M-887Timeline
EVOKE WEALTH, LLC13,147$1.65M0.04%+1,31713F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding13,019$1.64M-2,455Timeline
BEACON INVESTMENT ADVISORY SERVICES, IN…12,930$1.62M0.07%-3,15013F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.12,891$1.62M0.27%+3,77713F-HRTimeline
Cetera Investment Advisers12,888$1.62M<0.01%+28013F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC12,625$1.59M0.01%-48,76813F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND12,598$1.58M0.03%013F-HRTimeline
Provident Co of the Employees of the He…12,529$1.57M1.57%013F-HRTimeline
Ethic Inc.12,438$1.57M0.03%+4,58313F-HRTimeline
Norinchukin Bank, Thein group Norinchukin Bank, The12,485$1.57M0.02%+91113F-HRTimelineGroup
B. Metzler seel. Sohn & Co. AGin group B. Metzler seel. Sohn & Co. AG12,482$1.57M0.01%013F-HRTimelineGroup
Pallas Capital Advisors LLC12,365$1.55M0.06%-98013F-HRTimeline
TWIN CAPITAL MANAGEMENT INC12,034$1.51M0.16%+49213F-HRTimeline
Rhenman & Partners Asset Management AB12,000$1.51M0.19%-37,50013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…11,669$1.47M0.01%013F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC11,597$1.46M0.01%-11613F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…11,437$1.44M0.01%+22413F-HRTimeline
Public Sector Pension Investment Board11,252$1.41M0.01%-8,85513F-HRTimeline
AlphaQuest LLC11,164$1.4M0.14%+2,83713F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC11,116$1.4M<0.01%+4,22613F-HR/ATimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP11,114$1.4M<0.01%-7,96213F-HRTimelineGroup
Point72 Hong Kong Ltd11,083$1.39M0.1%+7,20313F-HRTimeline
Caption Management, LLC11,000$1.38M0.13%new13F-HRTimeline
Assenagon Asset Management S.A.10,936$1.37M<0.01%-33,86013F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC10,922$1.37M0.04%+9,11213F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding10,477$1.32M+289Timeline
AUXIER ASSET MANAGEMENT LLC10,232$1.29M0.19%-3,31513F-HRTimeline
Federation des caisses Desjardins du Qu…10,144$1.27M0.01%-59913F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC10,130$1.27M0.03%13F-HRTimelineGroup
MYDA Advisors LLC10,000$1.26M0.35%+7,00013F-HRTimeline
Sterling Capital Management LLC9,723$1.22M0.02%+1,62213F-HR/ATimeline
Composition Wealth, LLC9,594$1.2M0.02%new13F-HRTimeline
Premier Path Wealth Partners, LLC9,551$1.2M0.17%+83913F-HRTimeline
INCEPTIONR LLC9,500$1.19M0.28%+2,95413F-HRTimeline
GROUPAMA ASSET MANAGMENT8,918$1.12M0.02%+98613F-HRTimeline
HighTower Advisors, LLC8,871$1.11M<0.01%-2,82613F-HRTimeline
Fieldview Capital Management, LLC8,837$1.11M0.17%new13F-HRTimeline
HARTFORD INVESTMENT MANAGEMENT CO8,791$1.1M0.04%-7613F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.8,735$1.1M<0.01%+94113F-HR/ATimelineGroup
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP8,703$1.09M<0.01%-9913F-HRTimelineGroup
Wealthfront Advisers LLC8,684$1.09M<0.01%+4,89913F-HRTimeline
M&G PLCin group M&G PLC8,593$1.08M0.01%-64,11913F-HRTimelineGroup
Orion Porfolio Solutions, LLC8,587$1.08M0.01%+1,12113F-HR/ATimeline
MML INVESTORS SERVICES, LLC8,560$1.07M<0.01%+61713F-HRTimeline
SHELL ASSET MANAGEMENT CO8,440$1.06M0.04%+4,48813F-HRTimeline
Empowered Funds, LLC8,343$1.05M0.01%+1,28913F-HRTimeline
DOHJ, LLC8,853$1.05M0.3%+26113F-HRTimeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …8,319$1.04M0.05%-92713F-HRTimelineGroup
Cairn Investment Group, Inc.8,274$1.04M0.54%-8213F-HRTimeline
QUADRANT CAPITAL GROUP LLC8,172$1.03M0.04%+6,61613F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC8,169$1.03M0.01%-64,96013F-HR/ATimelineGroup
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…8,093$1.02M<0.01%+58213F-HRTimelineGroup
Jacobi Capital Management LLC7,963$1M0.07%+1,95213F-HRTimeline
Gulf International Bank (UK) Ltd7,924$995K0.04%013F-HRTimeline
CORNERCAP INVESTMENT COUNSEL INC7,894$991K0.52%-21713F-HRTimeline
Entropy Technologies, LP7,840$985K0.08%-9,47013F-HRTimeline
Missouri Trust & Investment Co7,810$981K0.32%+1,48513F-HRTimeline
PKO Investment Management Joint-Stock Co7,800$980K0.11%013F-HRTimeline
WHITTIER TRUST CO OF NEVADA INC7,746$973K0.02%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP7,579$956K<0.01%+6413F-HRTimelineGroup
SECURIAN ASSET MANAGEMENT, INC7,596$954K0.03%-10013F-HRTimeline
Linden Thomas Advisory Services, LLC7,551$948K0.1%-13813F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …7,273$946K<0.01%-3,58913F-HRTimelineGroup
Motley Fool Asset Management LLCin group Motley Fool Asset Management …7,497$942K0.04%+68813F-HRTimelineGroup
PITCAIRN COin group PITCAIRN CO7,454$936K0.06%new13F-HR/ATimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…7,377$926K<0.01%+1,88813F-HRTimelineGroup
Koss-Olinger Consulting, LLC7,256$911K0.07%-4213F-HRTimeline
THOR INVESTMENT MANAGEMENT INC /OH/ /ADV7,239$909K0.62%-3,73213F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC7,231$908K<0.01%-2613F-HRTimelineGroup
Canada Post Corp Registered Pension Plan7,193$903K0.05%new13F-HRTimeline
CITIZENS & NORTHERN CORPin group CITIZENS & NORTHERN CORP7,028$883K0.24%+2,31513F-HRTimelineGroup
Merit Financial Group, LLC6,991$878K0.01%-2,00613F-HRTimeline
CSS LLC/IL6,920$869K0.05%+3,19013F-HRTimeline
AIA Group Ltdin group AIA Group Ltd6,852$861K0.02%+2,00613F-HRTimelineGroup
NEW MEXICO EDUCATIONAL RETIREMENT BOARD6,824$857K0.03%013F-HRTimeline
Maryland State Retirement & Pension Sys…6,809$855K0.02%013F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding6,796$854K+609Timeline
Campbell & CO Investment Adviser LLC6,760$849K0.05%-4,81313F-HRTimeline
WOLVERINE TRADING, LLC6,667$841K0.02%-19,61713F-HRTimeline
Metis Global Partners, LLC6,647$835K0.02%-4,00513F-HRTimeline
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…6,626$832K0.01%+1,34113F-HRTimelineGroup
SIMPLEX TRADING, LLC6,599$828K0.02%+3,44013F-HRTimeline
World Investment Advisors6,478$814K0.02%+18413F-HRTimeline
E. Ohman J:or Asset Management AB6,399$804K0.02%013F-HRTimeline
CIM INVESTMENT MANAGEMENT INC5,764$803K0.15%+2,87713F-HRTimeline
Y-Intercept (Hong Kong) Ltd6,318$793K0.02%+4,48013F-HRTimeline
MOGY JOEL R INVESTMENT COUNSEL INC6,260$786K0.05%013F-HRTimeline
COMMERCE BANKin group COMMERCE BANK6,236$783K<0.01%-72713F-HRTimelineGroup
LORING WOLCOTT & COOLIDGE FIDUCIARY ADV…6,193$778K0.01%013F-HRTimeline
Investment Management Corp of Ontario6,078$763K0.01%-50013F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT6,076$763K0.02%new13F-HRTimeline
MONEY CONCEPTS CAPITAL CORP6,029$757K0.05%+5413F-HRTimeline
Daiichi Life Insurance Co., Ltd.in group Daiichi Life Insurance Co., L…6,019$756K0.02%-4,70013F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL6,000$754K0.01%-99,85113F-HRTimeline
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…5,986$752K0.01%-1,08113F-HRTimelineGroup
ONTARIO TEACHERS PENSION PLAN BOARDin group ONTARIO TEACHERS PENSION PLAN…5,786$727K0.02%-5,06313F-HR/ATimelineGroup
NICOLET BANKSHARES INCgroup of 2 filers holding5,628$725K+1,404Timeline
Gifford Fong Associates5,750$722K0.17%013F-HRTimeline
Advisors Asset Management, Inc.5,713$717K0.01%-67113F-HR/ATimeline
PRAXIS INVESTMENT MANAGEMENT INC5,690$715K0.05%+1,33013F-HRTimeline
GREENLEAF TRUST5,669$712K0.01%+2,71413F-HRTimeline
North Star Investment Management Corp.5,622$706K0.05%013F-HRTimeline
TOCQUEVILLE ASSET MANAGEMENT L.P.in group TOCQUEVILLE ASSET MANAGEMENT …5,587$702K0.01%-1,09313F-HRTimelineGroup
Hills Bank & Trust Coin group Hills Bank & Trust Co5,586$702K0.04%+82913F-HRTimelineGroup
TOKIO MARINE ASSET MANAGEMENT CO LTDin group TOKIO MARINE HOLDINGS, INC.5,569$699K0.03%+39613F-HRTimelineGroup
Ballentine Partners, LLC5,475$688K0.01%+1,65113F-HRTimeline
Frank, Rimerman Advisors LLC5,368$674K0.05%new13F-HRTimeline
Essential Partners LLC5,345$671K0.27%13F-HRTimeline
Unison Advisors LLC5,327$669K0.07%013F-HRTimeline
GUARDIAN INVESTMENT MANAGEMENT5,300$666K0.67%-2,00013F-HRTimeline
Empirical Finance, LLC5,233$657K0.03%+3113F-HRTimeline