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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
CX Institutional1,370$172K0.01%+5513F-HR/ATimeline
S-Bank Fund Management Ltd1,308$164K0.02%-10813F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.1,183$149K<0.01%+1,15313F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
WHITTIER TRUST CO1,176$148K<0.01%-1213F-HRTimeline
New Age Alpha Advisors, LLC1,132$142K0.01%+2213F-HRTimeline
Blue Trust, Inc.1,107$139K<0.01%+52213F-HRTimeline
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.1,100$138K<0.01%-6213F-HRTimelineGroup
IFP Advisors, Inc1,085$136K<0.01%+22013F-HRTimeline
STOREBRAND ASSET MANAGEMENT AS1,063$134K<0.01%-1,98213F-HRTimeline
TRUST CO OF VERMONT1,049$132K0.01%013F-HRTimeline
UMB Bank, n.a.1,029$129K<0.01%+55713F-HR/ATimeline
Steward Partners Investment Advisory, L…990$124K<0.01%-8213F-HRTimeline
Farther Finance Advisors, LLC955$120K<0.01%-17213F-HRTimeline
Mascoma Wealth Management LLC925$116K0.03%-213F-HRTimeline
Nexus Investment Management ULC920$116K0.02%013F-HRTimeline
ACIMA PRIVATE WEALTH, LLC916$115K0.04%013F-HRTimeline
TCTC Holdings, LLCin group TCTC Holdings, LLC900$113K<0.01%013F-HRTimelineGroup
CoreFirst Bank & Trust894$112K0.06%new13F-HRTimeline
PIN OAK INVESTMENT ADVISORS INC820$112K0.09%013F-HRTimeline
Legacy Bridge, LLC880$111K0.05%-6113F-HRTimeline
Manchester Capital Management LLC874$110K0.01%-2413F-HRTimeline
Covestor Ltd859$108K0.06%+21713F-HRTimeline
EASTERN BANK856$108K<0.01%013F-HRTimeline
TD Waterhouse Canada Inc.816$106K<0.01%-1,51913F-HRTimeline
Raiffeisen Bank International AGin group Raiffeisen Bank International…822$105K<0.01%-74913F-HRTimelineGroup
Versant Capital Management, Inc830$104K0.02%+45913F-HRTimeline
BNP PARIBASin group BNP PARIBAS804$101K<0.01%-7013F-HRTimelineGroup
Centennial Bank/AR/in group Centennial Bank/AR/800$100K0.04%013F-HR/ATimelineGroup
MAI Capital Management776$97.4K<0.01%+19413F-HRTimeline
GPS Wealth Strategies Group, LLC695$87.3K0.01%-3013F-HRTimeline
City State Bank692$86.9K0.03%013F-HRTimeline
AlphaCore Capital LLC646$81.1K<0.01%new13F-HRTimeline
GeoWealth Management, LLC643$80.8K<0.01%new13F-HRTimeline
OFI INVEST ASSET MANAGEMENT750$80.2K<0.01%+28313F-HRTimeline
HORIZON BANCORP INC /IN/636$80K0.04%+913F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
JNBA Financial Advisors626$78.6K0.01%013F-HRTimeline
MassMutual Private Wealth & Trust, FSB617$77.5K<0.01%+10713F-HRTimeline
TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU…610$76.6K0.02%-14013F-HRTimeline
Tidemark, LLC592$74.3K0.02%013F-HRTimeline
Sunbelt Securities, Inc.477$72.9K0.01%new13F-HRTimeline
SALEM INVESTMENT COUNSELORS INC566$71.1K<0.01%-113F-HR/ATimeline
Alpine Bank Wealth Managementin group Alpine Bank Wealth Management545$68.4K0.01%-35013F-HRTimelineGroup
Hanson & Doremus Investment Management525$66K0.01%013F-HRTimeline
Larson Financial Group LLC517$64.9K<0.01%+43613F-HRTimeline
Cromwell Holdings LLC511$64.2K0.04%+50113F-HRTimeline
Greykasell Wealth Strategies, Inc.505$63.4K0.03%+30713F-HRTimeline
Curat Global, LLC503$63.2K0.06%013F-HR/ATimeline
Capital Analysts, LLCin group Capital Analysts, LLC501$63K<0.01%013F-HRTimelineGroup
PARADIGM ASSET MANAGEMENT CO LLC455$57.1K0.01%013F-HRTimeline
RICHARDSON FINANCIAL SERVICES INC.437$56.8K0.04%013F-HRTimeline
Lavaca Capital LLC447$56.1K0.02%+16213F-HR/ATimeline
MUFG Securities EMEA plc431$54.1K<0.01%new13F-HR/ATimeline
Oslo Pensjonsforsikring AS422$53K0.01%-1,02513F-HRTimeline
Key Financial Inc406$51K0.01%013F-HRTimeline
Bellevue Group AGin group Bellevue Group AG402$50.5K<0.01%013F-HRTimelineGroup
Aventura Private Wealth, LLC402$50.5K0.02%-13813F-HRTimeline
Caldwell Trust Co401$50.4K0.01%-25313F-HRTimeline
CVA Family Office, LLC393$49.4K0.01%+16213F-HRTimeline
CYBER HORNET ETFs LLC373$47K0.03%new13F-HRTimeline
ZIONS BANCORPORATION, NATIONAL ASSOCIAT…372$46.7K<0.01%+16113F-HRTimeline
ARMSTRONG ADVISORY GROUP, INC356$44.7K<0.01%013F-HRTimeline
CoreCap Advisors, LLC349$43.8K<0.01%-313F-HRTimeline
FSA Wealth Management LLC344$43.2K0.02%013F-HRTimeline
TD PRIVATE CLIENT WEALTH LLC338$42.4K<0.01%+32613F-HRTimeline
OPTIMUM INVESTMENT ADVISORS335$42.1K0.02%013F-HRTimeline
Arax Advisory Partners333$41.8K<0.01%+11813F-HRTimeline
MCF Advisors LLC324$40.7K<0.01%013F-HRTimeline
Costello Asset Management, INC300$37.7K0.01%013F-HRTimeline
NFSG Corp300$37.7K0.01%013F-HRTimeline
Hopwood Financial Services, Inc.300$37.7K0.03%013F-HRTimeline
Financial Gravity Companies, Inc.in group Financial Gravity Companies, …295$37K0.01%13F-HRTimelineGroup
NBT BANK, N.A.in group NBT BANK, N.A.284$35.7K<0.01%+3513F-HRTimelineGroup
Strategic Wealth Partners, Ltd.280$35.2K<0.01%13F-HRTimeline
Itau Unibanco Holding S.A.in group Itau Unibanco Holding S.A.273$34.3K<0.01%-313F-HRTimelineGroup
Golden State Wealth Management, LLC265$33.3K<0.01%013F-HRTimeline
GW&K Investment Management, LLC260$33K<0.01%+16813F-HRTimeline
Quintet Private Bank (Europe) S.A.255$32K<0.01%-67213F-HRTimeline
WFA of San Diego, LLC253$31.8K0.02%13F-HRTimeline
Twin Lakes Capital Management, LLC250$31.4K0.02%013F-HRTimeline
NewSquare Capital LLC244$30.6K<0.01%+14013F-HRTimeline
Concord Wealth Partnersin group Concord Wealth Partners228$28.6K<0.01%+11413F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC224$28.1K<0.01%+8813F-HRTimeline
Pflug Koory, LLC214$26.9K0.01%013F-HRTimeline
Bogart Wealth, LLC209$26.2K<0.01%013F-HRTimeline
Smartleaf Asset Management LLC202$25.5K<0.01%-12513F-HRTimeline
HARBOUR INVESTMENTS, INC.201$25.2K<0.01%+613F-HRTimeline
VISION FINANCIAL MARKETS LLC200$25.1K0.02%013F-HRTimeline
ELEVATION POINT WEALTH PARTNERS, LLC200$25.1K<0.01%new13F-HR/ATimeline
Opal Wealth Advisors, LLC186$23.4K0.01%-513F-HRTimeline
Capital Advisors, Ltd. LLC180$23K<0.01%-6813F-HRTimeline
Principia Wealth Advisory, LLC183$23K0.02%+1313F-HRTimeline
MV CAPITAL MANAGEMENT, INC.180$22.6K<0.01%+11113F-HRTimeline
Rakuten Securities, Inc.in group Rakuten Group, Inc.179$22.5K0.01%+9213F-HR/ATimelineGroup
WealthCollab, LLC171$21.5K0.01%+813F-HRTimeline
OGOREK ANTHONY JOSEPH /NY/ /ADV172$21K0.01%+10613F-HRTimeline
PRIVATE TRUST CO NA166$20.8K<0.01%-6313F-HRTimeline
CENTRAL TRUST Co163$20.5K<0.01%-4013F-HRTimeline
Trust Co163$20.5K<0.01%013F-HRTimeline
AllSquare Wealth Management LLC153$19.2K0.01%013F-HRTimeline
LANARK FINANCIAL, INC.154$19K<0.01%-10313F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management148$18.6K<0.01%-2313F-HRTimelineGroup
Rise Advisors, LLC148$18.6K0.01%013F-HRTimeline
True Wealth Design, LLC143$18K0.01%+11813F-HRTimeline
Addison Advisors LLC126$15.8K<0.01%+11413F-HRTimeline
Asset Planning,Inc126$15.8K0.01%013F-HRTimeline
North Capital, Inc.116$14.6K0.01%-32213F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp115$14.4K<0.01%new13F-HRTimelineGroup
Medallion Wealth Advisors, LLC115$14.4K0.01%013F-HRTimeline
First Horizon Advisors, Inc.110$13.9K<0.01%+613F-HRTimeline
SITTNER & NELSON, LLC110$13.8K0.01%013F-HRTimeline
Graney & King, LLC106$13.3K0.01%013F-HRTimeline
Bruce G. Allen Investments, LLC105$13.2K0.01%+3813F-HRTimeline
CKW FINANCIAL GROUP100$13K<0.01%013F-HRTimeline
Bell Investment Advisors, Inc102$12.8K<0.01%-3213F-HRTimeline
Global Retirement Partners, LLC102$12.8K<0.01%13F-HRTimeline
BROADWATER CAPITAL MANAGEMENT LLC12,559$12.6K0.02%+12,45913F-HR/ATimeline
DELTA ASSET MANAGEMENT LLC/TN100$12.6K<0.01%013F-HRTimeline
Strengthening Families & Communities, L…100$12.6K0.01%new13F-HRTimeline
Livelsberger Financial Advisory100$12.6K0.24%new13F-HRTimeline
SouthState Bank Corpin group SouthState Bank Corp95$11.9K<0.01%+2313F-HRTimelineGroup
VSM Wealth Advisory, LLC92$11.6K<0.01%013F-HRTimeline
Ransom Advisory, Ltd90$11.3K0.01%-5013F-HRTimeline
Catalyst Capital Advisors LLC89$11.2K<0.01%-2513F-HRTimeline
Red Tortoise LLC89$11.2K0.01%+7613F-HRTimeline
Brown Shipley& Co Ltd85$10.7K0.01%-2213F-HRTimeline
Hara Capital LLC84$10.6K0.01%013F-HRTimeline
Union Bancaire Privee, UBP SA82$10.3K<0.01%013F-HRTimeline
GHP Investment Advisors, Inc.82$10.3K<0.01%-513F-HRTimeline
Clearstead Trust, LLC82$10.3K<0.01%+5513F-HRTimeline
RMG Wealth Management LLC80$10.1K<0.01%13F-HRTimeline
ADIRONDACK TRUST CO80$10K<0.01%013F-HRTimeline
Centerpoint Advisors, LLC83$10K<0.01%013F-HRTimeline
Geneos Wealth Management Inc.79$9.92K<0.01%-11313F-HRTimeline
STEPH & CO75$9.42K<0.01%013F-HRTimeline
Independence Bank of Kentucky75$9.42K<0.01%013F-HRTimeline
Cetera Trust Company, N.A75$9.42K0.01%013F-HRTimeline
Mountain Hill Investment Partners Corp.75$9.42K0.01%013F-HRTimeline
HARBOR INVESTMENT ADVISORY, LLC74$9.29K<0.01%+5613F-HRTimeline
Asset Dedication, LLC74$9.29K<0.01%-3013F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC70$9.03K<0.01%new13F-HRTimeline
Avion Wealth74$9K<0.01%+5313F-HR/ATimeline
Sachetta, LLC70$8.79K<0.01%+4213F-HRTimeline
Smallwood Wealth Investment Management,…70$8.79K0.01%013F-HRTimeline
Truvestments Capital LLC68$8.57K<0.01%013F-HRTimeline
FIRST COMMUNITY TRUST NA65$8.16K0.01%013F-HRTimeline
Future Financial Wealth Managment LLC65$8.16K0.01%013F-HRTimeline
Private Wealth Asset Management, LLC63$7.91K<0.01%013F-HRTimeline
MONTAG A & ASSOCIATES INC60$7.54K<0.01%-14913F-HRTimeline
Cornerstone Planning Group LLC52$6.91K<0.01%+3813F-HRTimeline
Grove Bank & Trust51$6.41K<0.01%-39313F-HRTimeline
Tradewinds Capital Management, LLC50$6.28K<0.01%013F-HRTimeline
Financial Freedom, LLC50$6.28K<0.01%013F-HRTimeline
Millstone Evans Group, LLC50$6.28K<0.01%013F-HRTimeline
Tortoise Investment Management, LLC49$6.15K<0.01%+913F-HRTimeline
Marshall & Sterling Wealth Advisors Inc.49$6.15K<0.01%+113F-HRTimeline
Private Wealth Management Group, LLC47$5.9K<0.01%-6013F-HRTimeline
Activest Wealth Management43$5.4K<0.01%+4313F-HRTimeline
McIlrath & Eck, LLC43$5.36K<0.01%013F-HRTimeline
Physician Wealth Advisors, Inc.42$5.28K<0.01%-213F-HRTimeline
Bank Julius Baer & Co. Ltd, Zurich40$5.03K<0.01%013F-HR/ATimeline
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.40$5.02K<0.01%013F-HRTimelineGroup
Anchor Investment Management, LLC40$5.02K<0.01%013F-HRTimeline
E Fund Management (Hong Kong) Co., Ltd.40$5.02K<0.01%013F-HRTimeline
Hemington Wealth Management45$5K<0.01%-2513F-HRTimeline
Wood Tarver Financial Group, LLC44$5K<0.01%013F-HRTimeline
Johnson Financial Group, Inc.in group Johnson Financial Group, Inc.39$4.9K<0.01%013F-HRTimelineGroup
Prestige Wealth Management Group LLC38$4.77K<0.01%+313F-HR/ATimeline
WEBSTER BANK, N. A.36$4.52K<0.01%013F-HRTimeline
High Note Wealth, LLC35$4.4K<0.01%013F-HRTimeline
Rosenberg Matthew Hamilton35$4.4K<0.01%013F-HRTimeline
CALDWELL SUTTER CAPITAL, INC.34$4.27K<0.01%013F-HRTimeline
Pinnacle Bancorp, Inc.32$4.02K<0.01%+913F-HRTimeline
Whipplewood Advisors, LLC32$4.02K<0.01%+413F-HRTimeline
Howard Hughes Medical Institute31$3.89K<0.01%new13F-HRTimeline
ST GERMAIN D J CO INCin group ST GERMAIN D J CO INC30$3.77K<0.01%new13F-HRTimelineGroup
BARRETT & COMPANY, INC.30$3.77K<0.01%013F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC30$3.77K<0.01%013F-HRTimeline
Hughes Financial Services, LLC29$3.75K<0.01%+1313F-HRTimeline
Tower View Wealth Management LLC29$3.64K<0.01%013F-HRTimeline
Bangor Savings Bank28$3.52K<0.01%013F-HRTimeline
Bellwether Advisors, LLC26$3.27K<0.01%-213F-HRTimeline
CONSULTIVA WEALTH MANAGEMENT, CORP.25$3.14K0.01%013F-HRTimeline
BARTLETT & CO. WEALTH MANAGEMENT LLC25$3.14K<0.01%-113F-HRTimeline
Roble, Belko & Company, Inc25$3K<0.01%013F-HRTimeline
ORG Partners LLC23$2.99K<0.01%new13F-HRTimeline
CBIZ Investment Advisory Services, LLC23$2.89K<0.01%+1613F-HRTimeline
Colonial Trust Advisorsgroup of 2 filers holding23$2.89K+18Timeline
Abound Wealth Management22$2.76K<0.01%+413F-HRTimeline
RAFFA WEALTH MANAGEMENT, LLC21$2.64K<0.01%013F-HRTimeline
CHILTON CAPITAL MANAGEMENT LLC20$2.51K<0.01%new13F-HRTimeline
FIRST UNITED BANK & TRUST20$2.51K<0.01%013F-HRTimeline
Indiana Trust & Investment Management Co20$2.51K<0.01%013F-HRTimeline
Compagnie Lombard Odier SCmA20$2.51K<0.01%013F-HRTimeline
Fortitude Family Office, LLC20$2.51K<0.01%new13F-HRTimeline
Kilter Group LLC20$2.51K<0.01%new13F-HRTimeline
AMERIFLEX GROUP, INC.18$2.29K<0.01%013F-HRTimeline
Plante Moran Financial Advisors, LLC17$2.13K<0.01%013F-HRTimeline
Financial Management Professionals, Inc.16$2.01K<0.01%new13F-HRTimeline
Winch Advisory Services, LLC16$2.01K<0.01%013F-HRTimeline
GFG Capital, LLC16$2.01K<0.01%new13F-HRTimeline