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
Abacus Planning Group, Inc.1,641$230K0.03%new13F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC1,637$229K<0.01%-2,31813F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.1,636$229K<0.01%+45313F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Optas, LLC1,633$229K0.04%+3913F-HRTimeline
Parcion Private Wealth LLC1,619$227K0.01%new13F-HRTimeline
SUMITOMO LIFE INSURANCE CO1,617$227K0.01%-3913F-HRTimeline
Verdence Capital Advisors LLC1,493$225K0.01%-13413F-HRTimeline
Baker Avenue Asset Management, LP1,598$224K0.01%new13F-HRTimeline
Plancorp, LLC1,596$224K0.01%-1113F-HRTimeline
Resonant Capital Advisors, LLC1,575$221K0.01%new13F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…1,572$220K<0.01%new13F-HRTimelineGroup
Mason & Associates Inc1,563$219K0.04%new13F-HRTimeline
POINCIANA ADVISORS GROUP, LLC1,554$218K0.18%new13F-HRTimeline
EARNED WEALTH ADVISORS, LLC1,545$216K0.04%-23413F-HRTimeline
BERKSHIRE ASSET MANAGEMENT LLC/PA1,541$216K0.01%new13F-HRTimeline
Alpha Family Trustin group Alpha Family Trust1,540$216K0.1%new13F-HRTimelineGroup
State of Wyoming1,527$214K0.02%-1,85213F-HRTimeline
STF Management LP1,525$214K0.08%+713F-HRTimeline
Modern Wealth Management, LLC1,507$211K<0.01%new13F-HRTimeline
Clearstead Advisors, LLC1,502$210K<0.01%-18113F-HRTimeline
Empirical Financial Services, LLC d.b.a…1,465$205K<0.01%new13F-HRTimeline
CARY STREET PARTNERS ASSET MANAGEMENT L…group of 2 filers holding1,464$205KnewTimeline
AE Wealth Management LLC1,462$205K<0.01%new13F-HRTimeline
CIGNA INVESTMENTS INC /NEWin group CIGNA INVESTMENTS INC /NEW1,457$204K0.03%new13F-HRTimelineGroup
CX Institutional1,453$204K0.01%+8313F-HRTimeline
Israel Discount Bank of New York1,453$204K0.6%new13F-HRTimeline
Prasad Wealth Partners, LLC1,452$203K0.06%new13F-HRTimeline
UMB Bank, n.a.1,436$201K<0.01%+40713F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
JOHNSON INVESTMENT COUNSEL INC1,429$200K<0.01%new13F-HRTimeline
INDEPENDENT FINANCIAL GROUP, LLC1,428$200K<0.01%new13F-HRTimeline
Board of the Pension Protection Fund1,400$196K0.19%new13F-HRTimeline
WHITTIER TRUST CO1,176$188K<0.01%013F-HRTimeline
Livforsakringsbolaget Skandia, Omsesidi…1,330$186K0.01%-10013F-HRTimeline
Cubist Systematic Strategies, LLC1,300$182K<0.01%-54,61913F-HRTimeline
S-Bank Fund Management Ltd1,292$181K0.02%-1613F-HRTimeline
Blue Trust, Inc.1,202$168K<0.01%+9513F-HRTimeline
SIMPLEX TRADING, LLC1,116$156K<0.01%-5,48313F-HRTimeline
IFP Advisors, Inc1,096$154K<0.01%+1113F-HR/ATimeline
Wealthspire Advisors, LLC1,067$149K<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC1,049$147K<0.01%+9413F-HRTimeline
TRUST CO OF VERMONT1,049$147K0.01%013F-HRTimeline
HORIZON BANCORP INC /IN/1,027$144K0.07%+39113F-HRTimeline
Covestor Ltd1,025$144K0.08%+16613F-HRTimeline
Steward Partners Investment Advisory, L…962$135K<0.01%-2813F-HRTimeline
Deseret Mutual Benefit Administrators929$130K0.05%-45913F-HRTimeline
Mascoma Wealth Management LLC925$130K0.03%013F-HRTimeline
Nexus Investment Management ULC920$129K0.02%013F-HRTimeline
ACIMA PRIVATE WEALTH, LLC916$128K0.04%013F-HRTimeline
MATHER GROUP, LLC.902$126K<0.01%new13F-HRTimeline
Versant Capital Management, Inc896$126K0.02%+6613F-HRTimeline
CoreFirst Bank & Trust894$125K0.07%013F-HRTimeline
Legacy Bridge, LLC880$123K0.05%013F-HRTimeline
Manchester Capital Management LLC878$123K0.02%+413F-HRTimeline
Wilmington Savings Fund Society, FSB867$121K<0.01%-1,06813F-HR/ATimeline
EASTERN BANK856$120K<0.01%013F-HRTimeline
Sava Infond d.o.o.825$116K0.02%-82513F-HRTimeline
PIN OAK INVESTMENT ADVISORS INC820$115K0.08%013F-HRTimeline
TD Waterhouse Canada Inc.734$113K<0.01%-8213F-HRTimeline
BNP PARIBASin group BNP PARIBAS804$113K<0.01%013F-HRTimelineGroup
Centennial Bank/AR/in group Centennial Bank/AR/800$112K0.04%013F-HRTimelineGroup
Point72 (DIFC) Ltd772$108K0.01%-15,52913F-HRTimeline
MassMutual Private Wealth & Trust, FSB726$102K<0.01%+10913F-HRTimeline
City State Bank692$96.9K0.03%013F-HRTimeline
MAI Capital Management690$96.7K<0.01%-8613F-HRTimeline
Quantbot Technologies LP690$96.7K<0.01%-90713F-HRTimeline
GPS Wealth Strategies Group, LLC645$90.4K0.01%-5013F-HRTimeline
Larson Financial Group LLC638$89.4K<0.01%+12113F-HRTimeline
JNBA Financial Advisors626$87.7K0.01%013F-HRTimeline
Smartleaf Asset Management LLC628$87K0.01%+42613F-HRTimeline
TCTC Holdings, LLCin group TCTC Holdings, LLC600$84K<0.01%-30013F-HRTimelineGroup
MMA ASSET MANAGEMENT LLC600$84K0.03%new13F-HRTimeline
Tidemark, LLC592$82.9K0.02%013F-HRTimeline
SALEM INVESTMENT COUNSELORS INC566$79.3K<0.01%013F-HRTimeline
Alpine Bank Wealth Managementin group Alpine Bank Wealth Management545$76.3K0.01%013F-HRTimelineGroup
Hanson & Doremus Investment Management525$74K0.01%013F-HRTimeline
Cromwell Holdings LLC511$71.6K0.04%013F-HRTimeline
ZIONS BANCORPORATION, NATIONAL ASSOCIAT…511$71.6K<0.01%+13913F-HRTimeline
Curat Global, LLC503$70.5K0.07%013F-HRTimeline
Capital Analysts, LLCin group Capital Analysts, LLC501$70K<0.01%013F-HRTimelineGroup
Pflug Koory, LLC464$65K0.03%+25013F-HRTimeline
CVA Family Office, LLC464$65K0.01%+7113F-HRTimeline
ROTHSCHILD INVESTMENT LLC457$64K<0.01%+23313F-HRTimeline
PARADIGM ASSET MANAGEMENT CO LLC455$63.7K0.01%013F-HRTimeline
Lavaca Capital LLC447$62.6K0.01%013F-HRTimeline
Key Financial Inc406$62.6K0.01%013F-HRTimeline
RICHARDSON FINANCIAL SERVICES INC.437$61.2K0.04%013F-HRTimeline
Bayforest Capital Ltd429$60.1K0.03%new13F-HRTimeline
TD PRIVATE CLIENT WEALTH LLC414$58K<0.01%+7613F-HRTimeline
Caldwell Trust Co401$56.2K0.01%013F-HRTimeline
Greykasell Wealth Strategies, Inc.385$53.9K0.02%-12013F-HRTimeline
CYBER HORNET ETFs LLC384$53.8K0.03%+1113F-HRTimeline
Caitong International Asset Management …382$53.5K0.04%new13F-HRTimeline
AlphaQuest LLC375$52.5K<0.01%-10,78913F-HRTimeline
Aventura Private Wealth, LLC367$51.4K0.02%-3513F-HRTimeline
ARMSTRONG ADVISORY GROUP, INC356$49.9K<0.01%013F-HRTimeline
Ascentis Wealth Management, LLCin group Ascentis Wealth Management, L…349$48.9K0.01%new13F-HRTimelineGroup
FSA Wealth Management LLC344$48.2K0.02%013F-HRTimeline
OPTIMUM INVESTMENT ADVISORS335$46.9K0.02%013F-HRTimeline
SENTRY INVESTMENT MANAGEMENT LLC305$46K0.03%new13F-HRTimeline
MCF Advisors LLC324$45.4K<0.01%013F-HRTimeline
Bogart Wealth, LLC313$43.8K<0.01%+10413F-HRTimeline
Costello Asset Management, INC300$42K0.01%013F-HRTimeline
NFSG Corp300$42K0.01%013F-HRTimeline
Hopwood Financial Services, Inc.300$42K0.03%013F-HRTimeline
Itau Unibanco Holding S.A.in group Itau Unibanco Holding S.A.271$38K<0.01%-213F-HRTimelineGroup
Golden State Wealth Management, LLC265$37.1K<0.01%013F-HRTimeline
Quintet Private Bank (Europe) S.A.255$35.7K<0.01%013F-HRTimeline
WFA of San Diego, LLC253$35.4K0.02%013F-HRTimeline
Twin Lakes Capital Management, LLC250$35K0.02%013F-HRTimeline
GW&K Investment Management, LLC239$33K<0.01%-2113F-HRTimeline
NBT BANK, N.A.in group NBT BANK, N.A.234$32.8K<0.01%-5013F-HRTimelineGroup
True Wealth Design, LLC233$32.6K0.01%+9013F-HRTimeline
Capital Advisors, Ltd. LLC232$32K<0.01%+5213F-HRTimeline
HARBOUR INVESTMENTS, INC.207$29K<0.01%+613F-HRTimeline
WealthCollab, LLC206$28.9K0.01%+3513F-HRTimeline
VISION FINANCIAL MARKETS LLC200$28K0.02%013F-HRTimeline
CoreCap Advisors, LLC199$27.9K<0.01%-15013F-HRTimeline
MV CAPITAL MANAGEMENT, INC.194$27.2K<0.01%+1413F-HRTimeline
Principia Wealth Advisory, LLC185$25.9K0.02%+213F-HRTimeline
Bell Investment Advisors, Inc172$24.1K<0.01%+7013F-HRTimeline
OGOREK ANTHONY JOSEPH /NY/ /ADV172$24K0.01%013F-HRTimeline
Addison Advisors LLC167$23.4K0.01%+4113F-HRTimeline
Rise Advisors, LLC166$23.3K0.01%+1813F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management166$23.3K<0.01%+1813F-HRTimelineGroup
CENTRAL TRUST Co163$22.8K<0.01%013F-HRTimeline
Trust Co163$22.8K<0.01%013F-HRTimeline
Global Retirement Partners, LLC162$22.7K<0.01%+6013F-HRTimeline
TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU…160$22.4K0.01%-45013F-HRTimeline
PRIVATE TRUST CO NA155$21.7K<0.01%-1113F-HRTimeline
AllSquare Wealth Management LLC153$21.4K0.01%013F-HRTimeline
Johnson Financial Group, Inc.in group Johnson Financial Group, Inc.119$16.7K<0.01%+8013F-HRTimelineGroup
North Capital, Inc.117$16.4K0.01%+113F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp115$16.1K<0.01%013F-HRTimelineGroup
Concord Wealth Partnersin group Concord Wealth Partners114$16K<0.01%-11413F-HRTimelineGroup
SITTNER & NELSON, LLC110$15.4K0.01%013F-HRTimeline
Bruce G. Allen Investments, LLC110$15.4K0.01%+513F-HRTimeline
CKW FINANCIAL GROUP100$15K<0.01%013F-HRTimeline
Graney & King, LLC106$14.8K0.01%013F-HRTimeline
Strategic Wealth Partners, Ltd.105$14.7K<0.01%-17513F-HRTimeline
LANARK FINANCIAL, INC.103$14.4K<0.01%-5113F-HRTimeline
DELTA ASSET MANAGEMENT LLC/TN100$14K<0.01%013F-HRTimeline
Global Trust Asset Management, LLC100$14K0.01%new13F-HRTimeline
Strengthening Families & Communities, L…100$14K<0.01%013F-HRTimeline
BROADWATER CAPITAL MANAGEMENT LLC100$14K0.01%-12,45913F-HR/ATimeline
E Fund Management (Hong Kong) Co., Ltd.99$13.9K0.01%+5913F-HRTimeline
High Note Wealth, LLC99$13.9K<0.01%+6413F-HRTimeline
VSM Wealth Advisory, LLC92$12.9K<0.01%013F-HRTimeline
Ransom Advisory, Ltd90$12.6K0.01%013F-HR/ATimeline
Red Tortoise LLC89$12.5K0.01%013F-HRTimeline
Clayton Financial Group LLC87$12.2K0.01%new13F-HRTimeline
Centerpoint Advisors, LLC83$12K<0.01%013F-HRTimeline
Brown Shipley& Co Ltd85$11.9K0.01%013F-HRTimeline
RMG Wealth Management LLC80$11.9K<0.01%013F-HRTimeline
Hara Capital LLC84$11.8K0.01%013F-HRTimeline
Asset Planning,Inc84$11.8K0.01%-4213F-HRTimeline
Quent Capital, LLC82$11.5K<0.01%new13F-HRTimeline
Union Bancaire Privee, UBP SA82$11.3K<0.01%013F-HRTimeline
ADIRONDACK TRUST CO80$11.2K<0.01%013F-HRTimeline
STEPH & CO79$11.1K<0.01%+413F-HRTimeline
Steigerwald, Gordon & Koch Inc.79$11.1K<0.01%new13F-HRTimeline
Independence Bank of Kentucky75$10.5K<0.01%013F-HRTimeline
Cetera Trust Company, N.A75$10.5K0.01%013F-HRTimeline
Mountain Hill Investment Partners Corp.75$10.5K0.01%013F-HRTimeline
Medallion Wealth Advisors, LLC73$10.2K<0.01%-4213F-HRTimeline
Avion Wealth73$10K<0.01%-113F-HRTimeline
Sachetta, LLC70$9.81K<0.01%013F-HRTimeline
Smallwood Wealth Investment Management,…70$9.8K0.01%013F-HRTimeline
Catalyst Capital Advisors LLC69$9.67K<0.01%-2013F-HRTimeline
Salomon & Ludwin, LLC57$9.11K<0.01%new13F-HRTimeline
FIRST COMMUNITY TRUST NA65$9.11K0.01%013F-HRTimeline
Future Financial Wealth Managment LLC65$9.11K0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Prestige Wealth Management Group LLC64$8.97K<0.01%+2613F-HR/ATimeline
Private Wealth Asset Management, LLC63$8.82K<0.01%013F-HRTimeline
HARBOR INVESTMENT ADVISORY, LLC62$8.69K<0.01%-1213F-HRTimeline
Root Financial Partners, LLC62$8.69K<0.01%new13F-HRTimeline
MONTAG A & ASSOCIATES INC60$8.4K<0.01%013F-HRTimeline
Hemington Wealth Management59$8K<0.01%+1413F-HRTimeline
Saranac Partners Ltd57$7.99K<0.01%new13F-HRTimeline
Asset Dedication, LLC57$7.99K<0.01%-1713F-HRTimeline
Tortoise Investment Management, LLC56$7.84K<0.01%+713F-HRTimeline
Private Wealth Management Group, LLC54$7.57K<0.01%+713F-HRTimeline
Physician Wealth Advisors, Inc.53$7.42K<0.01%+1113F-HRTimeline
Grove Bank & Trust51$7.14K<0.01%013F-HRTimeline
CBIZ Investment Advisory Services, LLC51$7.14K<0.01%+2813F-HRTimeline
Tradewinds Capital Management, LLC50$7K<0.01%013F-HRTimeline
Heartwood Wealth Advisors LLC50$7K<0.01%new13F-HRTimeline
Financial Freedom, LLC50$7K<0.01%013F-HRTimeline
Millstone Evans Group, LLC50$7K<0.01%013F-HRTimeline
SUMMIT SECURITIES GROUP LLC49$6.86K<0.01%new13F-HRTimeline
Marshall & Sterling Wealth Advisors Inc.49$6.86K<0.01%013F-HRTimeline
BARTLETT & CO. WEALTH MANAGEMENT LLC43$6.02K<0.01%+1813F-HRTimeline
ORG Partners LLC43$6.02K<0.01%+2013F-HRTimeline
McIlrath & Eck, LLC43$5.98K<0.01%013F-HRTimeline
Clearstead Trust, LLC41$5.74K<0.01%-4113F-HRTimeline
Bank Julius Baer & Co. Ltd, Zurich40$5.61K<0.01%013F-HRTimeline
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.40$5.6K<0.01%013F-HRTimelineGroup
Anchor Investment Management, LLC40$5.6K<0.01%013F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC39$5.46K<0.01%+913F-HR/ATimeline
Byrne Asset Management LLC38$5.32K<0.01%new13F-HRTimeline
WEBSTER BANK, N. A.36$5.04K<0.01%013F-HRTimeline