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Disclosery

BIIB BIOGEN INC

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Stock (common), issuer CIK 875045

868 managers (885 13F filers) reported a position in BIIB shares at 2025-03-31, 129,830,947 shares in all. 107 filers opened a position and 105 filers sold out during the quarter.

Managers
868
13F filers
885
New
107
Added
333
Reduced
274
Sold out
105
Shares held by filers
129,830,947

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, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, 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
Cannell & Spears LLC5,056$692K0.01%+113F-HRTimeline
Camelot Portfolios, LLC4,950$677K0.42%new13F-HRTimeline
AIA Group Ltdin group AIA Group Ltd4,846$663K0.02%new13F-HRTimelineGroup
First County Bank /CT/4,772$653K0.36%new13F-HRTimeline
Arrowpoint Investment Partners (Singapo…in group Arrowpoint Investment Partner…4,763$652K0.3%new13F-HRTimelineGroup
Hills Bank & Trust Coin group Hills Bank & Trust Co4,757$651K0.05%+18713F-HRTimelineGroup
CITIZENS & NORTHERN CORPin group CITIZENS & NORTHERN CORP4,713$645K0.18%+1,81913F-HRTimelineGroup
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD4,686$641K<0.01%new13F-HRTimelineGroup
SYSTEMATIC FINANCIAL MANAGEMENT LP4,670$639K0.02%013F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP4,589$628K0.02%+29113F-HRTimelineGroup
Private Advisor Group, LLC4,556$623K<0.01%-1,34113F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC4,500$616K0.12%+1,45513F-HRTimelineGroup
BROWN BROTHERS HARRIMAN & COin group BROWN BROTHERS HARRIMAN & CO4,464$611K<0.01%-14913F-HRTimelineGroup
Lifeworks Advisors, LLC4,453$609K0.1%+65713F-HRTimeline
KENNEDY CAPITAL MANAGEMENT LLC4,451$609K0.01%+5613F-HRTimeline
PINNACLE ASSOCIATES LTD4,417$604K0.01%+16313F-HRTimeline
Annis Gardner Whiting Capital Advisors,…4,413$604K0.26%+413F-HRTimeline
EP Wealth Advisors, LLC4,384$600K<0.01%-713F-HRTimeline
Court Place Advisors, LLC4,370$598K0.2%-1,31813F-HRTimeline
PRAXIS INVESTMENT MANAGEMENT INC4,360$597K0.04%013F-HRTimeline
OPPENHEIMER & CO INCin group OPPENHEIMER ASSET MANAGEMENT …4,290$587K0.01%+6613F-HRTimelineGroup
SIG BROKERAGE, LP4,225$578K0.17%-18613F-HRTimeline
Hillsdale Investment Management Inc.4,210$576K0.03%-40013F-HRTimeline
V-Square Quantitative Management LLC4,209$576K0.08%+19413F-HRTimeline
ROBERTS GLORE & CO INC /IL/4,163$570K0.17%+62713F-HRTimeline
Machina Capital S.A.S.4,146$567K0.17%-1,45913F-HRTimeline
ARGA Investment Management, LP4,133$566K0.02%+60113F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.4,039$553K0.01%+1,43513F-HRTimeline
Cohen Klingenstein LLC4,000$547K0.02%013F-HRTimeline
Howard Capital Management, LLC3,992$546K0.01%-61013F-HRTimeline
Texas Yale Capital Corp.3,987$546K0.02%013F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…3,967$543K0.02%-3913F-HRTimelineGroup
SHELL ASSET MANAGEMENT CO3,952$541K0.03%013F-HRTimeline
Point72 Hong Kong Ltd3,880$531K0.04%-22,29913F-HRTimeline
Polymer Capital Management (US) LLC3,880$531K0.16%new13F-HRTimeline
WEALTHEDGE INVESTMENT ADVISORS, LLC3,873$530K0.24%+2,13913F-HRTimeline
Cambridge Investment Research Advisors,…3,828$524K<0.01%+38913F-HRTimeline
Ballentine Partners, LLC3,824$523K0.01%+1,38413F-HRTimeline
NICOLET BANKSHARES INCgroup of 2 filers holding4,224$522K+2,259Timeline
Wealthfront Advisers LLC3,785$518K<0.01%+1,94913F-HRTimeline
Wahed Invest LLC3,774$516K0.09%+2213F-HRTimeline
Quarry LP3,755$514K0.13%+75013F-HRTimeline
CSS LLC/IL3,730$510K0.04%new13F-HRTimeline
UNITED SERVICES AUTOMOBILE ASSOCIATIONin group UNITED SERVICES AUTOMOBILE AS…3,604$499K0.02%new13F-HRTimelineGroup
WESTPAC BANKING CORPin group WESTPAC BANKING CORP3,635$497K0.04%+1,05013F-HRTimelineGroup
South Dakota Investment Council3,613$494K0.01%013F-HRTimeline
Crossmark Global Holdings, Inc.3,602$493K0.01%-58513F-HRTimeline
Cornerstone Advisors, LLC3,600$493K0.02%013F-HRTimeline
Forum Financial Management, LPin group Forum Financial Management, LP3,540$484K0.01%-26413F-HRTimelineGroup
Ironwood Financial, llc3,535$484K0.1%013F-HRTimeline
Humankind Investments LLC3,497$479K0.12%+48713F-HRTimeline
Uncommon Cents Investing LLC3,455$473K0.14%-1013F-HRTimeline
UNITED CAPITAL FINANCIAL ADVISORS, LLCin group UNITED CAPITAL FINANCIAL ADVI…3,378$462K<0.01%-1,49613F-HRTimelineGroup
COLDSTREAM CAPITAL MANAGEMENT INC3,362$460K0.01%+56713F-HRTimeline
Arkadios Wealth Advisors3,354$459K0.02%new13F-HRTimeline
PANAGORA ASSET MANAGEMENT INC3,319$454K<0.01%013F-HRTimeline
GREAT VALLEY ADVISOR GROUP, INC.in group GREAT VALLEY ADVISOR GROUP, I…3,291$450K0.01%+31013F-HRTimelineGroup
Savant Capital, LLCin group Savant Capital, LLC3,259$446K<0.01%-92013F-HR/ATimelineGroup
denkapparat Operations GmbH3,240$443K0.47%+1,62013F-HRTimeline
INVESTMENT HOUSE LLC3,219$440K0.03%-5013F-HRTimeline
Siemens Fonds Invest GmbH3,208$439K0.03%-1,21213F-HRTimeline
RDA Financial Network3,200$438K0.13%-1013F-HRTimeline
EntryPoint Capital, LLC3,179$435K0.2%+1,54013F-HRTimeline
HORIZON KINETICS ASSET MANAGEMENT LLC3,169$434K<0.01%013F-HRTimeline
SIMPLEX TRADING, LLC3,159$432K0.02%-30,38313F-HRTimeline
Marex Group Ltdin group Marex Group Ltd3,081$422K0.01%-4,41113F-HRTimelineGroup
Ramiah Investment Group3,073$421K0.4%+57913F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC3,066$420K0.01%+75913F-HRTimelineGroup
SYON CAPITAL LLC3,046$417K0.03%-89113F-HRTimeline
STOREBRAND ASSET MANAGEMENT AS3,045$417K<0.01%-17,92113F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC3,042$416K0.01%new13F-HRTimeline
CW Advisors, LLC3,033$416K<0.01%new13F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC3,037$415K<0.01%+72913F-HRTimelineGroup
Sequoia Financial Advisors, LLC3,017$413K<0.01%-913F-HRTimeline
MYDA Advisors LLC3,000$411K0.15%-9,00013F-HRTimeline
TOWNSQUARE CAPITAL LLC2,985$408K<0.01%+17413F-HRTimeline
GSA CAPITAL PARTNERS LLP2,963$405K0.04%-11,48313F-HRTimeline
GREENLEAF TRUST2,955$404K<0.01%-2,11013F-HRTimeline
Fiduciary Trust Coin group Fiduciary Trust Co2,935$402K0.01%+33513F-HRTimelineGroup
HUNTER ASSOCIATES INVESTMENT MANAGEMENT…2,906$398K0.06%+92013F-HRTimeline
CIM INVESTMENT MANAGEMENT INC2,887$395K0.09%-313F-HRTimeline
STEVENS CAPITAL MANAGEMENT LP2,884$395K0.1%new13F-HRTimeline
Claro Advisors Inc.2,877$394K0.05%new13F-HRTimeline
Freedom Investment Management, Inc.2,863$392K0.03%+83913F-HRTimeline
SECTORAL ASSET MANAGEMENT INC2,855$391K0.3%-99713F-HRTimeline
KCM INVESTMENT ADVISORS LLC2,839$388K0.01%-10513F-HRTimeline
Blackhawk Capital Partners, LLC2,789$382K0.2%new13F-HRTimeline
Richwood Investment Advisors, LLC2,783$381K0.32%-34813F-HRTimeline
Focus Financial Network, Inc.2,782$381K0.02%013F-HRTimeline
MATHER GROUP, LLC.2,767$379K<0.01%+1,03913F-HRTimeline
R Squared Ltd2,760$378K0.4%+1,97013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Kennondale Capital Management LLC2,760$378K0.41%013F-HRTimeline
Massachusetts Wealth Management2,759$378K0.26%+1913F-HRTimeline
Marathon Trading Investment Management …in group Marathon Trading Investment M…2,750$376K0.2%-11,78313F-HRTimelineGroup
KLINGENSTEIN FIELDS & CO LP2,731$374K0.02%013F-HRTimeline
SIGNATUREFD, LLC2,697$369K0.01%+60513F-HRTimeline
Enterprise Bank & Trust Co2,663$364K0.14%-20113F-HRTimeline
Advanced Portfolio Management, LLC2,641$361K0.73%new13F-HRTimeline
Prime Capital Investment Advisors, LLC2,636$361K<0.01%-63813F-HRTimeline
Westside Investment Management, Inc.2,660$359K0.08%+1,31013F-HRTimeline
EAGLE GLOBAL ADVISORS LLC2,625$359K0.01%013F-HRTimeline
Integrated Quantitative Investments LLC2,600$356K0.18%-6013F-HRTimeline
MUFG SECURITIES AMERICAS INC.2,591$355K0.04%+44013F-HRTimeline
S&CO INC2,572$351K0.02%new13F-HRTimeline
State of Wyoming2,561$350K0.05%+5613F-HRTimeline
Teza Capital Management LLC2,551$349K0.16%new13F-HRTimeline
Vestcor Inc2,543$348K0.01%+713F-HRTimeline
Aljian Capital Management, LLC2,540$348K0.08%-2013F-HRTimeline
OXFORD ASSET MANAGEMENT LLP2,529$346K0.16%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
PRUDENTIAL PLCin group PRUDENTIAL PLC2,508$343K<0.01%013F-HRTimelineGroup
Tema ETFs LLC2,501$342K0.1%013F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC2,500$342K<0.01%new13F-HRTimelineGroup
NJ State Employees Deferred Compensatio…2,500$342K0.04%013F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC2,476$339K<0.01%+80613F-HRTimeline
FLAGSHIP HARBOR ADVISORS, LLC2,440$334K0.02%+88713F-HRTimeline
TFB Advisors LLC2,439$334K0.1%+513F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK2,433$333K<0.01%+1913F-HRTimelineGroup
Legacy Wealth Asset Management, LLC2,420$331K0.09%+59113F-HRTimeline
Allegheny Financial Group2,419$331K0.08%-713F-HRTimeline
TOWER TRUST & INVESTMENT Co2,727$330K0.27%13F-HRTimeline
ORACLE INVESTMENT MANAGEMENT INC2,412$330K0.21%013F-HRTimeline
HB Wealth Management, LLC2,409$330K<0.01%+82013F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC2,405$329K0.01%+11913F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…2,403$329K0.03%new13F-HRTimelineGroup
Triangle Securities Wealth Management2,380$326K0.08%-2013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
NewEdge Advisors, LLC2,357$323K<0.01%-2213F-HRTimeline
ASAHI LIFE ASSET MANAGEMENT CO., LTD.2,345$321K0.21%+6013F-HRTimeline
Virtus Investment Advisers, LLCgroup of 2 filers holding2,311$316K+60Timeline
Fayez Sarofim & Coin group Fayez Sarofim & Co2,300$315K<0.01%013F-HRTimelineGroup
TRUST CO OF TOLEDO NA /OH/2,264$310K0.04%+25213F-HRTimeline
TD Waterhouse Canada Inc.2,335$308K<0.01%-7,42513F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.2,253$308K0.01%new13F-HRTimeline
PHILADELPHIA TRUST CO2,250$308K0.03%+25013F-HRTimeline
Sanctuary Advisors, LLC2,239$306K<0.01%+11613F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.2,236$306K<0.01%-46013F-HRTimelineGroup
B. Riley Wealth Advisors, Inc.2,228$305K0.01%-11513F-HRTimeline
SAX WEALTH ADVISORS, LLC2,210$302K0.02%+713F-HRTimeline
Integrated Advisors Network LLC2,180$298K0.02%+68513F-HRTimeline
Avestar Capital, LLC2,175$298K0.03%-7013F-HRTimeline
Meiji Yasuda Asset Management Co Ltd.in group Meiji Yasuda Life Insurance Co2,163$296K0.01%+20313F-HRTimelineGroup
Horizon Investments, LLC2,158$295K0.01%+11713F-HRTimeline
MBB PUBLIC MARKETS I LLC2,150$294K0.03%new13F-HR/ATimeline
Evercore Wealth Management, LLC2,142$293K<0.01%013F-HRTimeline
Callan Capital, LLC2,131$292K0.02%+5613F-HRTimeline
White Lighthouse Investment Management …2,125$291K0.05%new13F-HRTimeline
FLPUTNAM INVESTMENT MANAGEMENT CO2,080$285K0.01%+18913F-HRTimeline
Integrated Wealth Concepts LLC2,080$285K<0.01%-2,39913F-HRTimeline
Advisory Services Network, LLC2,068$283K0.01%-65413F-HRTimeline
PROATHLETE WEALTH MANAGEMENT LLC2,067$283K0.1%+22313F-HRTimeline
STEPHENS INC /AR/in group Stephens Investment Managemen…2,056$281K<0.01%-1,08913F-HRTimelineGroup
Capital Investment Advisors, LLC2,053$281K0.01%+113F-HRTimeline
Estabrook Capital Management2,033$278K0.04%013F-HRTimeline
PERSONAL CFO SOLUTIONS, LLC2,027$277K0.06%+48213F-HRTimeline
Independent Advisor Alliance2,008$275K0.01%-46113F-HRTimeline
Heritage Wealth Advisors2,000$274K0.01%013F-HRTimeline
Northwest & Ethical Investments L.P.2,000$274K0.01%013F-HRTimeline
Kestra Advisory Services, LLCgroup of 2 filers holding1,975$270K-284Timeline
SBI Securities Co., Ltd.1,975$270K0.01%+18413F-HRTimeline
Generali Investments, Management Co LLC1,962$268K0.08%-71613F-HRTimeline
Cresset Asset Management, LLC1,960$268K<0.01%+61913F-HRTimeline
Bayesian Capital Management, LP1,940$265K0.04%new13F-HRTimeline
NAVELLIER & ASSOCIATES INC2,164$264K0.04%013F-HRTimeline
Hennion & Walsh Asset Management, Inc.1,891$259K0.01%-19213F-HRTimeline
FORBES J M & CO LLP1,869$256K0.02%013F-HRTimeline
GAMMA Investing LLC1,862$255K0.02%+1,46413F-HR/ATimeline
MISSION WEALTH MANAGEMENT, LP1,850$253K0.01%-47113F-HRTimeline
Allegiance Financial Group Advisory Ser…1,847$253K0.08%new13F-HRTimeline
PEAPACK GLADSTONE FINANCIAL CORP1,843$252K<0.01%+2513F-HRTimeline
Rock Point Advisors, LLC1,840$252K0.08%013F-HRTimeline
Y-Intercept (Hong Kong) Ltd1,838$252K0.02%-13,31013F-HRTimeline
CURA WEALTH ADVISORS, LLC1,812$248K0.1%013F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC1,810$248K0.01%new13F-HRTimeline
Trail Ridge Investment Advisors, LLC1,807$247K0.13%013F-HRTimeline
&PARTNERS1,783$247K<0.01%+6213F-HRTimeline
Perpetual Ltdin group Perpetual Ltd1,797$246K<0.01%new13F-HRTimelineGroup
MQS Management LLC1,787$245K0.14%new13F-HRTimeline
Wedmont Private Capital2,109$243K0.01%-1,56113F-HRTimeline
LGT Fund Management Co Ltd.1,744$239K0.02%013F-HRTimeline
AE Wealth Management LLC1,731$237K<0.01%+14113F-HRTimeline
Parcion Private Wealth LLC1,724$236K0.02%new13F-HRTimeline
SUMITOMO LIFE INSURANCE CO1,711$234K0.01%-1913F-HRTimeline
Atria Investments, Inc1,697$232K<0.01%-12613F-HRTimeline
Kaufman Rossin Wealth, LLC1,690$231K0.17%new13F-HRTimeline
OneDigital Investment Advisors LLC1,688$231K<0.01%new13F-HRTimeline
HANCOCK WHITNEY CORP1,680$230K0.01%-13013F-HRTimeline
Trust Asset Management LLC1,675$229K0.02%+1313F-HRTimeline
KENNEDY INVESTMENT GROUP, INC.1,673$229K0.11%-24813F-HRTimeline
CIDEL ASSET MANAGEMENT INC1,672$229K0.01%+16013F-HRTimeline
Sava Infond d.o.o.1,650$226K0.04%013F-HRTimeline
Meeder Advisory Services, Inc.group of 2 filers holding1,648$226K+202Timeline
Verdence Capital Advisors LLC1,624$222K0.02%-3113F-HRTimeline
Bank Pictet & Cie (Europe) AG1,614$221K0.01%new13F-HRTimeline
Parallel Advisors, LLC1,610$220K<0.01%+29013F-HRTimeline
Lighthouse Financial LLC1,600$219K0.19%-50013F-HRTimeline
Waterfront Wealth Inc.1,593$218K0.05%new13F-HRTimeline
ASR Vermogensbeheer N.V.1,590$218K<0.01%13F-HRTimeline
Raiffeisen Bank International AGin group Raiffeisen Bank International…1,571$217K<0.01%013F-HRTimelineGroup
Plancorp, LLC1,587$217K0.01%+6513F-HRTimeline
QUADRANT CAPITAL GROUP LLC1,556$213K0.01%+88713F-HRTimeline
MGO ONE SEVEN LLC1,547$212K0.01%new13F-HRTimeline