Skip to content
Disclosery

BIIB BIOGEN INC

Follow

Stock (common), issuer CIK 875045

983 managers (1,014 13F filers) reported a position in BIIB shares at 2026-03-31, 135,049,061 shares in all. 113 filers opened a position and 107 filers sold out during the quarter.

Managers
983
13F filers
1,014
New
113
Added
402
Reduced
290
Sold out
107
Shares held by filers
135,049,061

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 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU…160$29.3K0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
HIGHLINE WEALTH PARTNERS LLC157$28.8K0.01%new13F-HRTimeline
Addison Advisors LLC154$28.2K0.01%+313F-HRTimeline
Johnson Financial Group, Inc.in group Johnson Financial Group, Inc.150$27.5K<0.01%+3513F-HRTimelineGroup
OGOREK ANTHONY JOSEPH /NY/ /ADV152$27K0.01%013F-HR/ATimeline
STEPH & CO145$26.6K0.01%+813F-HRTimeline
NBT BANK, N.A.in group NBT BANK, N.A.138$25.3K<0.01%+1213F-HRTimelineGroup
TWIN PEAKS WEALTH ADVISORS, LLC127$23.3K0.01%new13F-HRTimeline
Bell Investment Advisors, Inc124$22.7K<0.01%013F-HRTimeline
Ares Financial Consulting, LLC123$22.6K0.02%+9813F-HRTimeline
SMA Capital LLC120$22K0.01%new13F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp117$21.4K<0.01%+213F-HRTimelineGroup
SITTNER & NELSON, LLC110$20.2K0.01%013F-HRTimeline
Bruce G. Allen Investments, LLC110$20.2K0.01%013F-HRTimeline
Raiffeisen Bank International AGin group Raiffeisen Bank International…105$19.7K<0.01%new13F-HRTimelineGroup
Global X Japan Co., Ltd.106$19.4K<0.01%+5113F-HRTimeline
Graney & King, LLC106$19.4K0.01%013F-HRTimeline
Strategic Wealth Partners, Ltd.105$19.2K<0.01%013F-HRTimeline
High Note Wealth, LLC105$19.2K<0.01%+913F-HRTimeline
Destiny Wealth Partners, LLC105$19.2K<0.01%new13F-HRTimeline
Merrithew & Thorsten Inc106$19K0.02%013F-HRTimeline
Physician Wealth Advisors, Inc.103$18.9K<0.01%+5013F-HRTimeline
Basecamp Wealth Advisors LLC103$18.9K<0.01%013F-HRTimeline
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.100$18.3K<0.01%+5713F-HRTimelineGroup
DELTA ASSET MANAGEMENT LLC/TN100$18.3K<0.01%013F-HRTimeline
Independence Bank of Kentucky100$18.3K<0.01%013F-HRTimeline
CKW FINANCIAL GROUP100$18K<0.01%013F-HRTimeline
Cornerstone Planning Group LLC95$18K<0.01%+5413F-HRTimeline
Clayton Financial Group LLC97$17.8K0.01%013F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management96$17.6K<0.01%-6313F-HRTimelineGroup
BROADWATER CAPITAL MANAGEMENT LLC100$17.6K0.01%013F-HRTimeline
E Fund Management (Hong Kong) Co., Ltd.95$17.4K0.01%+7813F-HRTimeline
VSM Wealth Advisory, LLC92$16.9K0.01%013F-HRTimeline
SWISS RE LTDin group SWISS RE LTD90$16.5K0.1%013F-HRTimelineGroup
Grove Bank & Trust88$16.1K<0.01%+313F-HRTimeline
Quent Capital, LLC85$15.6K<0.01%-413F-HRTimeline
Brown Shipley& Co Ltd85$15.6K0.01%013F-HRTimeline
Hara Capital LLC84$15.4K0.01%013F-HRTimeline
Asset Planning,Inc84$15.4K0.01%013F-HRTimeline
J.Safra Asset Management Corp82$15K<0.01%+5513F-HRTimeline
Centerpoint Advisors, LLC83$15K<0.01%013F-HRTimeline
Steigerwald, Gordon & Koch Inc.81$14.8K<0.01%+213F-HRTimeline
STANCE CAPITAL LLC81$14.8K0.01%new13F-HRTimeline
ADIRONDACK TRUST CO80$14.7K<0.01%013F-HRTimeline
Cetera Trust Company, N.A75$13.8K0.01%013F-HRTimeline
ADKINS SEALE CAPITAL MANAGEMENT LLC75$13.8K0.01%013F-HRTimeline
Red Tortoise LLC74$13.6K0.01%-613F-HRTimeline
United Financial Planning Group LLC74$13.6K0.01%new13F-HRTimeline
Medallion Wealth Advisors, LLC73$13.4K<0.01%013F-HRTimeline
Avion Wealth75$13K<0.01%+313F-HRTimeline
Sachetta, LLC70$12.8K0.01%013F-HRTimeline
Smallwood Wealth Investment Management,…70$12.8K0.01%013F-HRTimeline
Wealth Preservation Advisors, LLC70$12.8K0.01%+6113F-HRTimeline
CREATIVE FINANCIAL DESIGNS INC /ADV69$12.7K<0.01%+6813F-HRTimeline
Fortitude Family Office, LLC69$12.7K<0.01%+3713F-HRTimeline
JFS WEALTH ADVISORS, LLC68$12.5K<0.01%+513F-HRTimeline
First Command Advisory Services, Inc.67$12.3K<0.01%new13F-HRTimeline
FIRST COMMUNITY TRUST NA65$11.9K0.01%013F-HRTimeline
SJS Investment Consulting Inc.62$11.4K<0.01%+5013F-HRTimeline
Private Wealth Asset Management, LLC61$11.2K<0.01%-213F-HRTimeline
Westfuller Advisors, LLC60$11K<0.01%+113F-HRTimeline
Kemnay Advisory Services Inc.59$10.8K<0.01%new13F-HRTimeline
Asset Dedication, LLC58$10.6K<0.01%+113F-HRTimeline
Salomon & Ludwin, LLC57$10.1K<0.01%013F-HRTimeline
Rossby Financial, LCC53$9.74K<0.01%+3913F-HRTimeline
RAFFA WEALTH MANAGEMENT, LLC53$9.72K<0.01%+213F-HRTimeline
Private Wealth Management Group, LLC52$9.53K<0.01%013F-HRTimeline
Kilter Group LLC52$9.53K<0.01%+313F-HRTimeline
Timothy G. Youngquist 2020 Irrevocable …52$9.53K<0.01%new13F-HRTimeline
Synergy Investment Management, LLC51$9.35K<0.01%new13F-HRTimeline
Tradewinds Capital Management, LLC50$9.17K<0.01%013F-HRTimeline
Clearstead Trust, LLC50$9.17K<0.01%013F-HRTimeline
Financial Freedom, LLC50$9.17K<0.01%013F-HRTimeline
Millstone Evans Group, LLC50$9.17K0.01%013F-HRTimeline
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…50$9.17K<0.01%+3313F-HRTimelineGroup
LANARK FINANCIAL, INC.49$8.98K<0.01%-3613F-HRTimeline
Cornerstone Financial Management LLC48$8.8K0.01%+913F-HR/ATimeline
BARTLETT & CO. WEALTH MANAGEMENT LLC47$8.8K<0.01%+413F-HRTimeline
McIlrath & Eck, LLC43$7.82K<0.01%013F-HRTimeline
DT Investment Partners, LLC42$7.7K<0.01%013F-HRTimeline
Bank Julius Baer & Co. Ltd, Zurich40$7.35K<0.01%013F-HRTimeline
Anchor Investment Management, LLC40$7.33K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.39$7.15K<0.01%new13F-HR/ATimelineGroup
Prosperity Bancshares Inc36$6.6K0.01%+1513F-HRTimeline
WEBSTER BANK, N. A.36$6.6K<0.01%013F-HRTimeline
Joseph Group Capital Management36$6.6K<0.01%new13F-HRTimeline
Signature Equity Partners, LLC36$6.6K<0.01%+3213F-HRTimeline
GHP Investment Advisors, Inc.35$6.42K<0.01%+413F-HRTimeline
Rosenberg Matthew Hamilton35$6.42K<0.01%013F-HRTimeline
Sunbelt Securities, Inc.33$6.05K<0.01%013F-HRTimeline
Park Place Capital Corp33$6.05K<0.01%+2213F-HRTimeline
CALDWELL SUTTER CAPITAL, INC.30$5.5K<0.01%013F-HRTimeline
ST GERMAIN D J CO INCin group ST GERMAIN D J CO INC30$5.5K<0.01%013F-HRTimelineGroup
BARRETT & COMPANY, INC.30$5.5K<0.01%013F-HRTimeline
Marquette Asset Management, LLC30$5.5K<0.01%013F-HRTimeline
Tower View Wealth Management LLC29$5.32K<0.01%013F-HRTimeline
Crewe Advisors LLC28$5.13K<0.01%+1713F-HRTimeline
Bangor Savings Bank28$5.13K<0.01%013F-HRTimeline
Align Financial, LLC28$5.13K<0.01%-4,90013F-HRTimeline
Roble, Belko & Company, Inc25$5K<0.01%013F-HRTimeline
Pinnacle Bancorp, Inc.27$4.95K<0.01%013F-HRTimeline
Cedar Mountain Advisors, LLC27$4.95K<0.01%new13F-HRTimeline
Hughes Financial Services, LLC27$4.95K<0.01%+213F-HRTimeline
Abound Wealth Management26$4.72K<0.01%013F-HRTimeline
CONSULTIVA WEALTH MANAGEMENT, CORP.25$4.58K0.01%013F-HRTimeline
SUMMIT SECURITIES GROUP LLC24$4.4K<0.01%-19513F-HRTimeline
SouthState Bank Corpin group SouthState Bank Corp23$4.22K<0.01%-1013F-HRTimelineGroup
MidFirst Bank23$4.22K<0.01%+1313F-HRTimeline
Colonial Trust Advisorsgroup of 2 filers holding23$4.22K0Timeline
Nvest Wealth Strategies, Inc.22$4.03K<0.01%+313F-HRTimeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …24$4K<0.01%+2413F-HRTimelineGroup
Bay Harbor Wealth Management, LLC21$3.85K<0.01%+813F-HRTimeline
FIRST UNITED BANK & TRUST20$3.67K<0.01%013F-HRTimeline
Bank of New Hampshire20$3.67K<0.01%new13F-HRTimeline
Vision Retirement, LLC20$3.67K<0.01%013F-HRTimeline
Truvestments Capital LLC19$3.48K<0.01%-1413F-HRTimeline
Bare Financial Services, Inc19$3.48K<0.01%+613F-HRTimeline
Whipplewood Advisors, LLC19$3.48K<0.01%new13F-HRTimeline
Burk Holdings LLC19$3.48K<0.01%new13F-HRTimeline
HARBOR INVESTMENT ADVISORY, LLC18$3.3K<0.01%-4413F-HRTimeline
Rialto Wealth Management, LLC18$3.3K<0.01%+613F-HRTimeline
AMERIFLEX GROUP, INC.18$3.3K<0.01%013F-HRTimeline
Plante Moran Financial Advisors, LLC17$3.12K<0.01%013F-HRTimeline
DiNuzzo Private Wealth, Inc.17$3.12K<0.01%+313F-HRTimeline
Financial Management Professionals, Inc.16$2.93K<0.01%013F-HRTimeline
Darwin Wealth Management, LLC16$2.93K<0.01%013F-HRTimeline
NVWM, LLC16$2.93K<0.01%013F-HRTimeline
Lloyd Advisory Services, LLC.15$2.75K<0.01%new13F-HRTimeline
Fortis Group Advisors, LLC15$2.75K<0.01%013F-HRTimeline
Activest Wealth Management15$2.75K<0.01%new13F-HRTimeline
Kingdom Financial Group LLC.15$2.75K<0.01%new13F-HRTimeline
PlanVest Financial, Inc15$2.75K<0.01%13F-HRTimeline
AdvisorNet Financial, Inc14$2.57K<0.01%+513F-HRTimeline
First Pacific Financial14$2.57K<0.01%new13F-HRTimeline
Godfrey Financial Associates, Inc.14$2.57K<0.01%013F-HRTimeline
HOLLENCREST CAPITAL MANAGEMENT13$2.38K<0.01%013F-HRTimeline
ATWOOD & PALMER INC12$2.2K<0.01%+713F-HRTimeline
WestEnd Advisors, LLC12$2.2K<0.01%013F-HRTimeline
American Capital Advisory, LLC11$2.03K<0.01%+313F-HRTimeline
FINANCIAL CONSULATE, INC11$2.02K<0.01%+713F-HRTimeline
Bernard Wealth Management Corp.11$2.02K<0.01%013F-HRTimeline
Penserra Capital Management LLCin group Penserra Capital Management L…12$2K<0.01%013F-HRTimelineGroup
TOTH FINANCIAL ADVISORY CORP10$1.83K<0.01%new13F-HRTimeline
Indiana Trust & Investment Management Co10$1.83K<0.01%013F-HRTimeline
1 NORTH WEALTH SERVICES LLC10$1.83K<0.01%013F-HRTimeline
1015 Capital Partners, LLC10$1.83K<0.01%013F-HRTimeline
THURSTON, SPRINGER, MILLER, HERD & TITA…10$1.83K<0.01%013F-HRTimeline
IMA Advisory Services, Inc.9$1.65K<0.01%new13F-HRTimeline
Operose Advisors LLC8$1.47K<0.01%new13F-HRTimeline
Sunrise Financial Services, LLC8$1.47K<0.01%new13F-HRTimeline
Dunhill Financial, LLC7$1.34K<0.01%+213F-HRTimeline
Clark Wealth Partners7$1.28K<0.01%013F-HRTimeline
Sound Income Strategies, LLC6$1.1K<0.01%013F-HRTimeline
ALBION FINANCIAL GROUP /UT6$1.1K<0.01%013F-HRTimeline
Quaker Wealth Management, LLC6$1.1K<0.01%013F-HRTimeline
VALLEY NATIONAL ADVISERS INC9$1K<0.01%+113F-HRTimeline
Phillip James Consulting Co.4$1K<0.01%new13F-HRTimeline
RMG Wealth Management LLC5$990<0.01%-8013F-HRTimeline
EVERMAY WEALTH MANAGEMENT LLC5$917<0.01%013F-HRTimeline
Geneos Wealth Management Inc.5$917<0.01%013F-HRTimeline
WOLFF WIESE MAGANA LLC5$917<0.01%013F-HRTimeline
HFM Investment Advisors, LLC5$917<0.01%013F-HRTimeline
Three Bearings Fiduciary Advisors, Inc.5$917<0.01%013F-HRTimeline
CHILTON CAPITAL MANAGEMENT LLC4$734<0.01%013F-HRTimeline
TFC Financial Management, Inc.4$734<0.01%013F-HRTimeline
Breakwater Investment Management4$734<0.01%013F-HRTimeline
Retirement Wealth Solutions LLC4$734<0.01%new13F-HRTimeline
CURIO WEALTH, LLC4$733<0.01%+213F-HRTimeline
JPL Wealth Management, LLC3$551<0.01%new13F-HR/ATimeline
DecisionPoint Financial, LLC3$550<0.01%013F-HRTimeline
Fairman Group, LLC3$550<0.01%013F-HRTimeline
COUNTRY TRUST BANK2$367<0.01%013F-HRTimeline
Davis Capital Management2$367<0.01%013F-HRTimeline
Seneschal Advisors, LLC2$367<0.01%013F-HRTimeline
Dogwood Wealth Management LLC2$367<0.01%new13F-HRTimeline
3 FACTOR INDEXING, LLC2$367<0.01%13F-HRTimeline
Rachor Investment Advisory Services, LLC1$184<0.01%new13F-HRTimeline
NorthAvenue LLC1$184<0.01%013F-HRTimeline
Triumph Capital Management1$183<0.01%new13F-HRTimeline
Nemes Rush Group LLC1$183<0.01%013F-HRTimeline
ROSS\JOHNSON & Associates LLC1$183<0.01%013F-HRTimeline
Portus Wealth Advisors, LLC1$183<0.01%new13F-HRTimeline
KAYNE ANDERSON RUDNICK INVESTMENT MANAG…0$180<0.01%013F-HRTimelineAmount filed as zero, left out of ratios.