Skip to content
Disclosery

BIIB BIOGEN INC

Follow

Stock (common), issuer CIK 875045

889 managers (910 13F filers) reported a position in BIIB shares at 2025-09-30, 131,320,309 shares in all. 117 filers opened a position and 72 filers sold out during the quarter.

Managers
889
13F filers
910
New
117
Added
324
Reduced
269
Sold out
72
Shares held by filers
131,320,309

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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
Frank, Rimerman Advisors LLC5,181$726K0.05%-18713F-HRTimeline
OMERS ADMINISTRATION Corp5,180$726K0.01%013F-HRTimeline
NJ State Employees Deferred Compensatio…5,180$726K0.08%+2,68013F-HRTimeline
Annis Gardner Whiting Capital Advisors,…5,178$725K0.15%+36913F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…5,175$725K<0.01%new13F-HRTimelineGroup
Bayesian Capital Management, LP5,100$714K0.15%new13F-HRTimeline
Cannell & Spears LLC5,079$711K0.01%+1913F-HRTimeline
Unison Advisors LLC5,078$711K0.06%-24913F-HRTimeline
Penserra Capital Management LLCin group Penserra Capital Management L…5,045$706K0.01%+5,03313F-HRTimelineGroup
Caption Management, LLC5,000$700K0.04%-6,00013F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC4,997$700K0.01%-6713F-HRTimelineGroup
Plato Investment Management Ltd4,939$687K0.05%013F-HRTimeline
Ellevest, Inc.4,895$686K0.1%+3,24413F-HRTimeline
Orion Porfolio Solutions, LLC4,828$676K0.01%-3,75913F-HRTimeline
CROWLEY WEALTH MANAGEMENT, INC.4,810$674K0.54%-10013F-HRTimeline
SIG BROKERAGE, LP4,781$670K0.17%+1,40213F-HRTimeline
Davis Investment Partners, LLC4,303$664K0.23%new13F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP4,700$658K0.02%new13F-HRTimelineGroup
BROWN BROTHERS HARRIMAN & COin group BROWN BROTHERS HARRIMAN & CO4,696$658K<0.01%-42713F-HRTimelineGroup
CI INVESTMENTS INC.in group CI INVESTMENTS INC.4,682$656K<0.01%-28913F-HRTimelineGroup
Lifeworks Advisors, LLC4,681$656K0.09%-1613F-HRTimeline
SYSTEMATIC FINANCIAL MANAGEMENT LP4,670$654K0.02%013F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC4,480$628K0.01%+1,23413F-HRTimeline
First County Bank /CT/4,477$627K0.32%013F-HRTimeline
Private Advisor Group, LLC4,467$626K<0.01%+22913F-HRTimeline
HRT FINANCIAL LP4,446$622K<0.01%-33,83013F-HRTimeline
Meeder Advisory Services, Inc.group of 2 filers holding4,425$620K+166Timeline
Integrated Wealth Concepts LLC4,387$614K0.01%+69813F-HRTimeline
GAMMA Investing LLC4,343$608K0.03%+75613F-HRTimeline
SIGNATUREFD, LLC4,342$608K0.01%-22913F-HRTimeline
Cambridge Investment Research Advisors,…4,341$608K<0.01%+90913F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC4,273$599K0.01%-25813F-HRTimeline
Parallel Advisors, LLC4,223$592K0.01%-13113F-HRTimeline
Bellevue Group AGin group Bellevue Group AG4,213$590K0.01%+3,81113F-HRTimelineGroup
PINNACLE ASSOCIATES LTD4,148$581K0.01%-37113F-HRTimeline
HB Wealth Management, LLC4,089$573K<0.01%+1,37713F-HRTimeline
Cohen Klingenstein LLC4,000$560K0.02%013F-HRTimeline
Wahed Invest LLC3,996$560K0.08%+2413F-HRTimeline
Texas Yale Capital Corp.3,987$558K0.02%013F-HRTimeline
STEVENS CAPITAL MANAGEMENT LP3,967$556K0.07%new13F-HRTimeline
MUFG SECURITIES AMERICAS INC.3,954$554K0.04%+70713F-HRTimeline
Ascent Group, LLCin group Ascent Group, LLC3,948$553K0.02%+1,23413F-HRTimelineGroup
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…3,942$552K0.02%-513F-HRTimelineGroup
SUMMIT WEALTH GROUP LLC / CO2,146$552K0.06%new13F-HRTimeline
ROBERTS GLORE & CO INC /IL/3,929$550K0.15%-41513F-HRTimeline
Laird Norton Wetherby Wealth Management…3,832$537K0.02%-35213F-HRTimeline
Brooklyn Investment Group4,256$537K0.07%+213F-HR/ATimeline
Sanctuary Advisors, LLC3,797$532K<0.01%+61613F-HR/ATimeline
Prime Capital Investment Advisors, LLC3,751$525K0.01%-30413F-HRTimeline
Court Place Advisors, LLC3,660$513K0.15%-58013F-HRTimeline
Crossmark Global Holdings, Inc.3,658$512K0.01%-28213F-HRTimeline
NorthRock Partners, LLC3,596$504K0.01%+48013F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.3,571$500K0.01%-41113F-HRTimeline
Ironwood Financial, llc3,543$496K0.09%+813F-HRTimeline
&PARTNERS3,530$494K<0.01%+67113F-HRTimeline
Siemens Fonds Invest GmbH3,521$493K0.03%-1913F-HRTimeline
STRS OHIO3,493$489K<0.01%+113F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…3,475$487K0.01%+56113F-HRTimelineGroup
PRAXIS INVESTMENT MANAGEMENT INC3,450$483K0.03%-2,24013F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC3,447$483K<0.01%+24413F-HRTimelineGroup
Savvy Advisors, Inc.3,438$482K0.02%+37313F-HRTimeline
Savant Capital, LLCin group Savant Capital, LLC3,414$478K<0.01%+40513F-HR/ATimelineGroup
South Dakota Investment Council3,413$478K0.01%-20013F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…3,359$471K0.13%013F-HRTimelineGroup
GTS SECURITIES LLC3,340$468K0.02%new13F-HRTimeline
Blackhawk Capital Partners, LLC3,325$466K0.18%+11313F-HRTimeline
EntryPoint Capital, LLC3,319$465K0.18%+25813F-HRTimeline
SAX WEALTH ADVISORS, LLC3,303$463K0.02%+1513F-HRTimeline
Vestcor Inc3,246$455K0.01%013F-HRTimeline
Sompo Asset Management Co., Ltd.3,240$454K0.08%new13F-HRTimeline
PANAGORA ASSET MANAGEMENT INC3,231$453K<0.01%+9913F-HRTimeline
Beacon Pointe Advisors, LLC3,224$452K<0.01%new13F-HRTimeline
MQS Management LLC3,206$449K0.26%-61113F-HRTimeline
RDA Financial Network3,200$448K0.11%013F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC3,143$440K<0.01%+61213F-HRTimelineGroup
HORIZON KINETICS ASSET MANAGEMENT LLC3,119$437K0.01%+8113F-HRTimeline
J. L. Bainbridge & Co., Inc.2,969$416K0.04%-119,37613F-HRTimeline
Wedmont Private Capital2,680$408K0.02%+49013F-HRTimeline
Chicago Partners Investment Group LLC2,724$406K0.01%+36613F-HRTimeline
TOWER TRUST & INVESTMENT Co2,900$406K0.27%+513F-HRTimeline
Arkadios Wealth Advisors2,896$406K0.01%-10713F-HRTimeline
HUNTER ASSOCIATES INVESTMENT MANAGEMENT…2,886$404K0.06%-5013F-HRTimeline
Applied Finance Capital Management, LLC2,878$403K0.03%-82513F-HRTimeline
Massachusetts Wealth Management2,874$403K0.2%013F-HRTimeline
Waterfront Wealth Inc.2,731$402K0.08%new13F-HRTimeline
Humankind Investments LLC2,867$402K0.09%-17213F-HRTimeline
Bank Pictet & Cie (Europe) AG2,866$401K0.01%+4013F-HRTimeline
Forum Financial Management, LPin group Forum Financial Management, LP2,848$399K0.01%+113F-HRTimelineGroup
CIM INVESTMENT MANAGEMENT INC2,844$398K0.11%-2,92013F-HRTimeline
Allworth Financial LP2,840$398K<0.01%+66113F-HRTimeline
MUFG Securities EMEA plc2,806$393K0.01%+2,37513F-HRTimeline
KCM INVESTMENT ADVISORS LLC2,799$392K0.01%-2013F-HRTimeline
Vise Technologies, Inc.2,799$392K0.01%-37113F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC2,772$389K<0.01%-77213F-HRTimelineGroup
SYON CAPITAL LLC2,770$388K0.02%+51813F-HRTimeline
Kennondale Capital Management LLC2,760$387K0.3%013F-HRTimeline
Uncommon Cents Investing LLC2,749$385K0.1%+1013F-HRTimeline
KLINGENSTEIN FIELDS & CO LP2,731$383K0.01%013F-HRTimeline
Polymer Capital Management (US) LLC2,674$375K0.05%-1,08613F-HRTimeline
EAGLE GLOBAL ADVISORS LLC2,625$368K0.01%013F-HRTimeline
Tema ETFs LLC2,624$368K0.03%+11313F-HRTimeline
Avestar Capital, LLC2,622$367K0.03%-17513F-HRTimeline
Integrated Advisors Network LLC2,613$366K0.02%+31513F-HRTimeline
Advanced Portfolio Management, LLC2,641$366K0.95%013F-HRTimeline
Requisite Capital Management, LLC2,585$362K0.06%new13F-HRTimeline
Westside Investment Management, Inc.2,480$359K0.06%-10013F-HRTimeline
TFB Advisors LLC2,448$356K0.1%-2313F-HRTimeline
AlphaCore Capital LLC2,529$354K0.01%+1,88313F-HRTimeline
Marex Group Ltdin group Marex Group Ltd2,525$354K<0.01%new13F-HRTimelineGroup
PRUDENTIAL PLCin group PRUDENTIAL PLC2,508$351K<0.01%013F-HRTimelineGroup
DKRT Investments Corp.2,500$350K0.08%013F-HRTimeline
Caerus Investment Advisors, LLC2,480$347K0.14%new13F-HRTimeline
Kathmere Capital Management, LLC2,473$346K0.02%+81013F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC2,451$343K<0.01%-6713F-HRTimeline
CHOREO, LLC2,444$342K<0.01%+77313F-HRTimeline
PERSONAL CFO SOLUTIONS, LLC2,438$342K0.06%+42113F-HRTimeline
Allegheny Financial Group2,419$339K0.06%013F-HRTimeline
Aljian Capital Management, LLC2,415$338K0.07%-12513F-HRTimeline
Entropy Technologies, LP2,413$338K0.03%-5,42713F-HRTimeline
ORACLE INVESTMENT MANAGEMENT INC2,412$338K0.24%013F-HRTimeline
Sage Mountain Advisors LLC2,390$335K0.02%new13F-HRTimeline
Motley Fool Asset Management LLCin group Motley Fool Asset Management …2,388$335K0.01%-5,10913F-HRTimelineGroup
SECTORAL ASSET MANAGEMENT INC2,375$333K0.21%013F-HRTimeline
PDT Partners, LLC2,348$329K0.02%-29,31613F-HRTimeline
STOREBRAND ASSET MANAGEMENT AS2,335$327K<0.01%+1,27213F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC2,317$325K0.01%+38513F-HRTimeline
Fayez Sarofim & Coin group Fayez Sarofim & Co2,300$322K<0.01%013F-HRTimelineGroup
Supplemental Annuity Collective Trust o…2,300$322K0.08%new13F-HRTimeline
FLAGSHIP HARBOR ADVISORS, LLC2,299$322K0.01%-3913F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.2,298$322K0.03%+5713F-HRTimeline
Sivia Capital Partners, LLC2,298$322K0.09%+58113F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK2,285$320K<0.01%+23513F-HRTimelineGroup
GREAT VALLEY ADVISOR GROUP, INC.in group GREAT VALLEY ADVISOR GROUP, I…2,272$318K0.01%+19613F-HRTimelineGroup
Voleon Capital Management LP2,253$316K0.01%new13F-HRTimeline
PHILADELPHIA TRUST CO2,250$315K0.02%013F-HRTimeline
Richwood Investment Advisors, LLC2,247$315K0.25%-113F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…2,247$315K0.01%+24313F-HRTimelineGroup
Atom Investors LP2,222$311K0.02%new13F-HRTimeline
Lineweaver Wealth Advisors, LLC2,209$309K0.05%new13F-HRTimeline
Independent Advisor Alliance2,171$304K0.01%new13F-HRTimeline
NAVELLIER & ASSOCIATES INC2,164$303K0.03%013F-HRTimeline
Callan Family Office, LLC2,152$301K0.01%-30213F-HRTimeline
Philip James Wealth Mangement, LLC2,146$301K0.04%new13F-HRTimeline
Capital Investment Advisors, LLC2,145$301K<0.01%-1913F-HRTimeline
Evercore Wealth Management, LLC2,142$300K<0.01%013F-HRTimeline
111 Capital2,130$298K0.06%-2,13713F-HRTimeline
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC2,122$297K<0.01%-10513F-HRTimelineGroup
FLPUTNAM INVESTMENT MANAGEMENT CO2,121$297K<0.01%+23113F-HRTimeline
Petros Family Wealth, LLC2,109$295K0.25%new13F-HRTimeline
Camelot Portfolios, LLC2,100$294K0.17%new13F-HRTimeline
Campbell & CO Investment Adviser LLC2,094$293K0.02%-4,66613F-HRTimeline
SBI Securities Co., Ltd.2,086$292K0.01%+13913F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC2,071$290K<0.01%+39013F-HRTimelineGroup
PROATHLETE WEALTH MANAGEMENT LLC2,068$290K0.08%-113F-HRTimeline
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC2,039$286K<0.01%new13F-HRTimelineGroup
TRUST CO OF TOLEDO NA /OH/2,039$286K0.03%-18613F-HRTimeline
B. Riley Wealth Advisors, Inc.2,026$284K0.01%+3513F-HRTimeline
CIDEL ASSET MANAGEMENT INC2,024$284K0.02%+16213F-HRTimeline
WEDBUSH SECURITIES INC2,017$283K0.01%+4613F-HRTimeline
Estabrook Capital Management2,000$280K0.04%013F-HRTimeline
Heritage Wealth Advisors2,000$280K0.01%013F-HRTimeline
Knott David M Jr2,000$280K0.12%new13F-HRTimeline
GC Wealth Management RIA, LLC2,000$280K0.01%new13F-HRTimeline
Northwest & Ethical Investments L.P.2,000$280K0.01%013F-HRTimeline
CITIZENS FINANCIAL GROUP INC/RIin group CITIZENS FINANCIAL GROUP INC/…1,997$280K<0.01%+20613F-HRTimelineGroup
J.W. COLE ADVISORS, INC.1,991$279K0.01%-2613F-HRTimeline
BSW Wealth Partners1,988$278K0.03%new13F-HRTimeline
Bridgefront Capital, LLC1,962$275K0.08%new13F-HRTimeline
HighPoint Advisor Group LLC1,958$274K0.01%+1213F-HRTimeline
Traub Capital Management LLC1,910$268K0.26%013F-HRTimeline
PEAPACK GLADSTONE FINANCIAL CORP1,868$262K<0.01%+2213F-HRTimeline
FORBES J M & CO LLP1,869$262K0.02%013F-HRTimeline
Claro Advisors Inc.1,857$260K0.04%-4513F-HRTimeline
Investors Research Corp1,850$259K0.05%013F-HRTimeline
PATTON FUND MANAGEMENT, INC.1,846$259K0.05%new13F-HRTimeline
Rock Point Advisors, LLC1,840$258K0.07%013F-HRTimeline
Oslo Pensjonsforsikring AS1,840$258K0.04%+1,41813F-HRTimeline
WESTPAC BANKING CORPin group WESTPAC BANKING CORP1,838$257K0.02%-1,79713F-HR/ATimelineGroup
Claret Asset Management Corp1,838$257K0.03%-2613F-HRTimeline
Crestwood Advisors Group, LLC1,821$255K<0.01%new13F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.1,810$254K<0.01%-8613F-HRTimelineGroup
Trail Ridge Investment Advisors, LLC1,807$253K0.11%013F-HRTimeline
Advisory Services Network, LLC1,792$251K<0.01%+6813F-HRTimeline
Atria Investments, Inc1,789$251K<0.01%-15113F-HRTimeline
Simplicity Wealth,LLC1,776$249K0.01%-1,64813F-HRTimeline
QTR Family Wealth, LLC1,760$247K0.12%new13F-HRTimeline
Marathon Trading Investment Management …in group Marathon Trading Investment M…1,750$245K0.1%-1,00013F-HRTimelineGroup
HANCOCK WHITNEY CORP1,740$244K<0.01%-2113F-HRTimeline
Parkside Financial Bank & Trust1,739$244K0.02%+9213F-HRTimeline
MISSION WEALTH MANAGEMENT, LP1,730$242K<0.01%-12613F-HRTimeline
INVESTMENT HOUSE LLC1,730$242K0.01%013F-HRTimeline
WADDELL & ASSOCIATES, LLC1,719$241K0.02%new13F-HRTimeline
DGS Capital Management, LLCin group DGS Capital Management, LLC1,708$239K0.04%new13F-HRTimelineGroup
FIDELIS CAPITAL PARTNERS, LLC1,703$239K0.02%new13F-HRTimeline
SYM FINANCIAL Corp1,695$237K0.03%new13F-HRTimeline
TRANSCEND CAPITAL ADVISORS, LLC1,679$235K0.02%new13F-HRTimeline
Trust Asset Management LLC1,675$235K0.02%013F-HRTimeline
Kera Capital Partners, Inc.1,665$233K0.03%new13F-HRTimeline
Joel Isaacson & Co., LLC1,664$233K0.01%new13F-HRTimeline
Financiere des Professionnels - Fonds d…1,646$231K0.01%new13F-HRTimeline