MRK MERCK & CO INC

COM (common), issuer CIK 310158

3,740 managers (3,807 13F filers) reported a position in MRK shares at 2026-03-31, 1,931,442,014 shares in all. 256 filers opened a position and 123 filers sold out during the quarter.

Managers: 3,740
13F filers: 3,807
New: 256
Added: 1,467
Reduced: 1,592
Sold out: 123
Shares held by filers: 1,931,442,014

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.

Holder	Shares	Value	% of portfolio	Change	Source
Concentric Capital Strategies, LP	3,492	$420K	0.04%	+1,059	13F-HR Timeline
Atlas Legacy Advisors, LLC	3,494	$420K	0.08%	-740	13F-HR Timeline
Westshore Wealth, LLC	3,491	$420K	0.15%	0	13F-HR Timeline
Sterneck Capital Management, LLC	3,491	$420K	0.19%	0	13F-HR Timeline
PENSION & WEALTH MANAGEMENT ADVISORS, I…	3,481	$419K	0.12%	-123	13F-HR Timeline
Ellsworth Advisors, LLC	3,481	$419K	0.08%	-14,193	13F-HR Timeline
Aspire Private Capital, LLC	3,477	$418K	0.09%	+536	13F-HR Timeline
TrinityBridge Ltd	3,474	$418K	0.01%	0	13F-HR Timeline
GROESBECK INVESTMENT MANAGEMENT CORP /N…	3,472	$418K	0.81%	0	13F-HR Timeline
Broyhill Asset Management, LLC	3,473	$418K	0.41%	0	13F-HR Timeline
Optivise Advisory Services LLC	3,472	$418K	0.25%	-546	13F-HR Timeline
ORLEANS CAPITAL MANAGEMENT CORP/LA	3,472	$418K	0.28%	new	13F-HR Timeline
MBE Wealth Management, LLC	3,469	$417K	0.17%	+38	13F-HR Timeline
Tortoise Investment Management, LLC	3,467	$417K	0.03%	-174	13F-HR Timeline
Mission Creek Capital Partners, Inc.	3,460	$416K	0.08%	new	13F-HR Timeline
ARQ WEALTH ADVISORS, LLC	3,449	$415K	0.07%	+1,125	13F-HR Timeline
MAINSAIL ASSET MANAGEMENT, LLC	3,443	$414K	0.19%	+5	13F-HR Timeline
WETZEL INVESTMENT ADVISORS, INC.	3,404	$412K	0.16%	-316	13F-HR Timeline
VIAWEALTH, LLC	3,423	$412K	0.23%	-3	13F-HR Timeline
Connecticut Capital Management Group, L…	3,417	$411K	0.39%	0	13F-HR Timeline
MAINSTAY CAPITAL MANAGEMENT LLC /ADV	3,414	$411K	0.03%	0	13F-HR Timeline
Roan Capital Partners	3,411	$410K	0.38%		13F-HR Timeline
South Shore Capital Advisors	3,408	$410K	0.3%	new	13F-HR Timeline
Intellus Advisors LLC	3,404	$409K	0.06%	-709	13F-HR Timeline
MeadowBrook Investment Advisors LLC	3,403	$409K	0.36%	+350	13F-HR Timeline
South Street Advisors LLC	3,393	$408K	0.06%	0	13F-HR Timeline
Purkiss Capital Advisors LLC	3,388	$408K	0.18%	+8	13F-HR Timeline
SAXON INTERESTS, INC.	3,387	$407K	0.14%	-6,426	13F-HR Timeline
Mach-1 Financial Group, LLC	3,385	$407K	0.14%	-4,958	13F-HR Timeline
LIBERTY WEALTH MANAGEMENT LLC	3,388	$407K	0.05%	+144	13F-HR Timeline
RB Capital Management, LLC	3,383	$407K	0.09%	-1,300	13F-HR Timeline
Montz Harcus Wealth Management LLC	3,379	$406K	0.16%	+518	13F-HR Timeline
PRESILIUM PRIVATE WEALTH, LLC	3,374	$406K	0.07%	-1,275	13F-HR Timeline
Destiny Wealth Partners, LLC	3,367	$405K	0.04%	-172	13F-HR Timeline
BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC	3,362	$404K	0.06%	+939	13F-HR Timeline
JMN Financial LLC	3,334	$404K	0.4%	+1,057	13F-HR Timeline
Genesis Wealth Advisors, LLC	3,349	$403K	0.27%	0	13F-HR Timeline
Colonial River Investments, LLC	3,342	$402K	0.14%	-121	13F-HR Timeline
Revisor Wealth Management LLC	3,319	$401K	0.11%	+58	13F-HR Timeline
CERTIOR FINANCIAL GROUP, LLC	3,336	$401K	0.26%	-3,807	13F-HR Timeline
RD Lewis Holdings, Inc.	3,266	$401K	0.35%	0	13F-HR Timeline
BLUEDOOR PRIVATE WEALTH, LLC	3,323	$400K	0.19%	+183	13F-HR Timeline
Lynx Investment Advisory	3,321	$400K	0.19%	-468	13F-HR Timeline
PCB Capital LLC	3,317	$399K	0.63%	+75	13F-HR Timeline
Elser Financial Planning, Inc	3,303	$399K	0.02%	new	13F-HR Timeline
Centric Wealth Management	3,525	$399K	0.08%	-716	13F-HR Timeline
Strategent Financial, LLC	3,314	$399K	0.27%	-161	13F-HR Timeline
Greenline Partners, LLC	3,313	$399K	0.04%	-840	13F-HR Timeline
Platt Wealth Management LLC	3,317	$398K	0.39%	+51	13F-HR Timeline
Highlander Partners, L.P.	3,300	$397K	0.16%	0	13F-HR Timeline
Bouchey Financial Group, Ltd.	3,230	$396K	0.03%	+1,311	13F-HR Timeline
PIN OAK INVESTMENT ADVISORS INC	3,266	$396K	0.28%	-307	13F-HR Timeline
SECURITY NATIONAL BANK OF SIOUX CITY IO…	3,289	$396K	0.23%	-113	13F-HR Timeline
Apeiron RIA LLC	3,285	$395K	0.09%	+42	13F-HR Timeline
Oxbow Advisors, LLC	3,283	$395K	0.03%	0	13F-HR Timeline
Human Investing LLC	3,278	$394K	0.06%	-943	13F-HR Timeline
Sovran Advisors, LLC	3,587	$392K	0.03%	-454	13F-HR Timeline
Braun-Bostich & Associates Inc.	3,254	$391K	0.25%	-153	13F-HR Timeline
Targeted Financial Services LLC	3,242	$390K	0.32%	0	13F-HR Timeline
OCCUDO QUANTITATIVE STRATEGIES LP	3,567	$389K	0.02%	new	13F-HR Timeline
Sun Group Wealth Partners	3,235	$389K	0.31%	+238	13F-HR Timeline
Smallwood Wealth Investment Management,…	3,232	$389K	0.2%	0	13F-HR Timeline
Moment Partners, LLC	3,191	$387K	0.07%	+500	13F-HR Timeline
TD Capital Management LLC	3,206	$386K	0.03%	+46	13F-HR Timeline
NORTH POINT PORTFOLIO MANAGERS CORP/OH	3,206	$386K	0.07%	-600	13F-HR Timeline
Hoese & Co LLP	3,202	$385K	0.29%	0	13F-HR Timeline
Bolthouse Investments, LLC	3,202	$385K	0.35%	0	13F-HR Timeline
Invera Wealth Advisors, LLC	3,193	$384K	0.25%	+3	13F-HR Timeline
GAGNON SECURITIES LLCin group GAGNON SECURITIES LLC	3,192	$384K	0.09%	-675	13F-HR Timeline Group
S Harris Financial Group, LLC	3,192	$384K	0.35%	+562	13F-HR Timeline
Crusonia Wealth Advisors LLC	3,190	$384K	0.08%	+682	13F-HR Timeline
Edgestream Partners, L.P.	3,181	$383K	0.01%	-19,845	13F-HR Timeline
truNorth Financial Services, Inc.	3,180	$383K	0.4%	0	13F-HR Timeline
Brookwood Investment Group LLC	3,179	$382K	0.05%	-74	13F-HR Timeline
RAINIER FAMILY WEALTH INC	3,176	$382K	0.26%	+57	13F-HR Timeline
FWG Investments, LLC.	3,169	$381K	0.24%	+651	13F-HR Timeline
MMA ASSET MANAGEMENT LLC	3,161	$380K	0.13%	+277	13F-HR Timeline
Schrum Private Wealth Management LLC	3,162	$380K	0.29%	-40	13F-HR Timeline
BIRCH FINANCIAL GROUP, LLC	3,157	$380K	0.22%	+114	13F-HR Timeline
Caitlin John, LLC	3,156	$380K	0.23%	-665	13F-HR Timeline
Stronghold Wealth Management L.L.C.	3,155	$380K	0.57%	-190	13F-HR Timeline
Wealth Quarterback LLC	3,154	$379K	0.15%	-58	13F-HR Timeline
Berman McAleer LLC	3,148	$379K	0.05%	-10	13F-HR Timeline
Hibernia Wealth Partners, LLC	3,145	$378K	0.11%	new	13F-HR Timeline
Flaharty Asset Management, LLC	3,144	$378K	0.05%	+24	13F-HR Timeline
Guardian Capital, LLC	3,143	$378K	0.36%	-1,653	13F-HR Timeline
PTM WEALTH MANAGEMENT, LLC	3,128	$378K	0.2%	+4	13F-HR Timeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC	3,140	$378K	0.02%	-6,500	13F-HR Timeline Group
Piscataqua Savings Bank	3,135	$377K	0.26%	0	13F-HR Timeline
Five Oceans Advisors	3,132	$377K	0.14%	+47	13F-HR Timeline
Stirlingshire Investments, Inc.	3,108	$376K	0.33%	new	13F-HR Timeline
Alaethes Wealth, LLC	3,107	$376K	0.11%	+107	13F-HR Timeline
Heritage Family Offices, LLP	3,127	$376K	0.17%	new	13F-HR Timeline
Legacy Edge Advisors, LLC	3,125	$376K	0.04%	+513	13F-HR Timeline
Tradition Wealth Management, LLC	3,123	$376K	0.03%	+280	13F-HR Timeline
ELCO Management Co., LLC	3,122	$376K	0.18%	-18	13F-HR Timeline
Samara Investment Management, LLC	3,122	$376K	0.39%		13F-HR Timeline
Bell Bank	3,120	$375K	0.02%	-255	13F-HR Timeline
Security Financial Services, INC.	3,120	$375K	0.06%	-304	13F-HR Timeline
CMG Global Holdings, LLC	3,112	$374K	0.18%	0	13F-HR Timeline
DUMONT & BLAKE INVESTMENT ADVISORS LLC	3,103	$373K	0.09%	-313	13F-HR Timeline
Knollwood Investment Advisory, LLC	3,100	$373K	0.04%	0	13F-HR Timeline
Comprehensive Financial Consultants Ins…	3,090	$372K	0.11%	0	13F-HR Timeline
Warren Street Wealth Advisors, LLC	3,089	$372K	0.1%	+270	13F-HR Timeline
Westfuller Advisors, LLC	3,061	$371K	0.16%	+54	13F-HR Timeline
CITY NATIONAL BANK OF FLORIDA /MSD	3,079	$370K	0.22%	+231	13F-HR Timeline
PARTNERS WEALTH MANAGEMENT, LLC	3,079	$370K	0.38%	+25	13F-HR Timeline
PARAGON FINANCIAL PARTNERS, INC.	3,083	$370K	0.21%	+2	13F-HR Timeline
BXM Wealth LLC	3,073	$370K	0.28%	-4,999	13F-HR Timeline
DB&C Advisors, LLC	3,072	$369K	0.48%	+22	13F-HR Timeline
MRA Advisory Group	3,068	$369K	0.15%	+23	13F-HR Timeline
BUCKHEAD CAPITAL MANAGEMENT LLC	3,066	$369K	0.14%	-49	13F-HR Timeline
TrustBankin group TrustBank	3,055	$367K	0.14%	-31	13F-HR Timeline Group
August Group Capital Ltd	3,053	$367K	0.43%	+15	13F-HR Timeline
Elm Partners Management LLC	3,108	$367K	0.02%	0	13F-HR Timeline
CPA Asset Management Group, LLC	3,048	$367K	0.12%	0	13F-HR Timeline
Cauble & Harre Wealth Management, Inc.	3,262	$367K	0.29%	0	13F-HR Timeline
JUPITER ASSET MANAGEMENT LTDin group JUPITER ASSET MANAGEMENT LTD	3,046	$366K	<0.01%	new	13F-HR Timeline Group
MORRIS FINANCIAL CONCEPTS, INC.	3,046	$366K	0.12%	0	13F-HR Timeline
UP STRATEGIC WEALTH INVESTMENT ADVISORS…	3,261	$366K	0.23%	+12	13F-HR Timeline
Balance Wealth Partners LLC	3,042	$366K	0.11%	+643	13F-HR Timeline
AIRE ADVISORS, LLC	3,039	$366K	0.07%	+83	13F-HR Timeline
TriaGen Wealth Management LLC	3,037	$365K	0.1%	0	13F-HR Timeline
Byrne Asset Management LLC	3,037	$365K	0.21%	-85	13F-HR Timeline
Salomon & Ludwin, LLC	3,022	$365K	0.03%	-11	13F-HR Timeline
Schneider Downs Wealth Management Advis…	3,031	$365K	0.04%	-6	13F-HR Timeline
POTENTIA WEALTH	3,030	$364K	0.14%	-1,275	13F-HR Timeline
VISTA INVESTMENT MANAGEMENT	3,030	$364K	0.12%	-804	13F-HR Timeline
WIREGRASS INVESTMENT MANAGEMENT LLC	3,028	$364K	0.3%	-180	13F-HR Timeline
Westside Investment Management, Inc.	3,025	$364K	0.06%	-117	13F-HR Timeline
HARRELL INVESTMENT PARTNERS, LLC	3,025	$364K	0.09%	-218	13F-HR Timeline
Parvin Asset Management, LLC	3,025	$364K	0.27%	0	13F-HR Timeline
Lorne Steinberg Wealth Management Inc.	3,023	$364K	0.09%	0	13F-HR Timeline
Directional Asset Management	3,018	$363K	0.33%	+19	13F-HR Timeline
Sterling Financial Planning, Inc.	3,014	$363K	0.11%	0	13F-HR Timeline
BAKER BOYER NATIONAL BANK	3,013	$362K	0.11%	-77	13F-HR Timeline
Cascades Capital Asset Management, LLC	3,012	$362K	0.15%	+4	13F-HR Timeline
Verition Fund Management LLC	3,011	$362K	<0.01%	-19,479	13F-HR Timeline
KRS Capital Management, LLC	3,010	$362K	0.22%	+3	13F-HR Timeline
Canvas Wealth Advisors, LLC	2,990	$362K	0.06%	+181	13F-HR Timeline
Centiva Capital, LP	3,008	$362K	0.02%	-11,753	13F-HR Timeline
Carson Advisory Inc.	3,008	$362K	0.19%	+1	13F-HR Timeline
COLLECTIVE FAMILY OFFICE LLC	3,007	$362K	0.08%	-139	13F-HR Timeline
Northwest Quadrant Wealth Management, L…	3,007	$362K	0.08%	+31	13F-HR Timeline
MENORA MIVTACHIM HOLDINGS LTD.in group MENORA MIVTACHIM HOLDINGS LTD.	3,000	$361K	<0.01%	0	13F-HR Timeline Group
LMR Partners LLPin group LMR Partners LLP	3,000	$361K	<0.01%	-27,000	13F-HR Timeline Group
Holt Capital Advisors, L.L.C. dba Holt …	3,000	$361K	0.05%	+500	13F-HR Timeline
Quantum Private Wealth, LLC	2,995	$360K	0.11%	+295	13F-HR Timeline
CDKV HOLDINGS LLC	2,994	$360K	0.32%	0	13F-HR Timeline
True Wealth Design, LLC	2,989	$360K	0.1%	+117	13F-HR Timeline
MCGUIRE CAPITAL ADVISORS INC	2,985	$359K	0.23%	+529	13F-HR Timeline
Opal Wealth Advisors, LLC	2,983	$359K	0.08%	+32	13F-HR Timeline
Lifestyle Asset Management, Inc.	2,980	$358K	0.12%	+4	13F-HR Timeline
Hoxton Planning & Management, LLC	2,980	$358K	0.11%	-45	13F-HR Timeline
PRENTISS SMITH & CO INC	2,974	$358K	0.21%	-16	13F-HR Timeline
Ashurst Perkins Coie Trust Co	2,970	$357K	0.07%	0	13F-HR Timeline
JPL Wealth Management, LLC	2,967	$357K	0.08%	+736	13F-HR/A Timeline
Hudson Portfolio Management LLC	2,961	$356K	0.3%	0	13F-HR Timeline
Cadent Capital Advisors, LLC	2,960	$356K	0.09%	+19	13F-HR Timeline
Walker Asset Management, LLC	2,944	$354K	0.19%	+85	13F-HR Timeline
Banque de Luxembourg S.A.	2,942	$354K	0.18%	-10	13F-HR Timeline
DMC Group, LLC	2,941	$354K	0.24%	-28	13F-HR Timeline
Tilson Financial Group, Inc.	2,931	$353K	0.11%	0	13F-HR Timeline
Bond & Devick Financial Network, Inc.	2,927	$352K	0.1%	-300	13F-HR Timeline
Kaydan Wealth Management, Inc.	2,925	$352K	0.12%	-2	13F-HR Timeline
Barnes Wealth Management Group, Inc	2,925	$352K	0.18%	-24	13F-HR Timeline
River Street Advisors LLC	2,923	$352K	0.12%	new	13F-HR Timeline
VISTA INVESTMENT PARTNERS II, LLC	2,922	$352K	0.16%	-150	13F-HR Timeline
North Capital, Inc.	2,920	$351K	0.3%	+10	13F-HR Timeline
REIK & CO., LLC	2,914	$351K	0.1%	0	13F-HR Timeline
NFSG Corp	2,911	$350K	0.06%	-95	13F-HR Timeline
PRINCETON CAPITAL MANAGEMENT LLC	2,909	$350K	0.1%	+709	13F-HR Timeline
GWN SECURITIES INC.	2,905	$350K	0.07%	-344	13F-HR Timeline
ETF Store, Inc.	2,895	$348K	0.34%	+17	13F-HR Timeline
Strategic Investment Solutions, Inc. /IL	2,894	$348K	0.08%	+6	13F-HR Timeline
Integris Wealth Management, LLC	2,891	$348K	0.08%	0	13F-HR Timeline
Grandview Asset Management LLC	2,890	$348K	0.1%	+2	13F-HR Timeline
Cypress Point Wealth Management, LLC	2,883	$347K	0.07%	new	13F-HR Timeline
GOULD ASSET MANAGEMENT LLC /CA/	2,882	$347K	0.06%	+95	13F-HR Timeline
CONSILIO WEALTH ADVISORS, LLC	2,878	$346K	0.1%	+81	13F-HR Timeline
PANORAMIC INVESTMENT ADVISORS, LLC	2,875	$346K	0.19%	+102	13F-HR/A Timeline
AMARILLO NATIONAL BANK	2,872	$345K	0.06%	0	13F-HR Timeline
Bellecapital International Ltd.	2,871	$345K	0.06%	-153	13F-HR/A Timeline
Englebert Financial Advisers, LLC	2,869	$345K	0.39%	-5,714	13F-HR Timeline
HBE Wealth Management, LLC	2,865	$345K	0.3%	+416	13F-HR Timeline
Whelan Financial	2,862	$344K	0.11%	+84	13F-HR Timeline
CHELSEA COUNSEL CO	2,840	$344K	0.15%	-420	13F-HR/A Timeline
BKM Wealth Management, LLC	2,854	$343K	0.13%	-310	13F-HR Timeline
Oakmont Advisory Group, LLC	2,847	$342K	0.35%	-433	13F-HR Timeline
Strategic Family Wealth Counselors, L.L…	2,829	$340K	0.09%	-79	13F-HR Timeline
Stonehearth Capital Management, LLC	2,828	$340K	0.13%	+467	13F-HR Timeline
KENNEDY INVESTMENT GROUP, INC.	2,827	$340K	0.13%	-394	13F-HR Timeline
SONATA CAPITAL GROUP INC	2,827	$340K	0.13%	-141	13F-HR Timeline
Triumph Capital Management	2,806	$340K	0.07%	-1,534	13F-HR Timeline
TFB Advisors LLC	2,824	$340K	0.18%	-573	13F-HR Timeline
Kellett Wealth Advisors, LLC	2,822	$339K	0.18%	+313	13F-HR Timeline
AGP FRANKLIN, LLC	2,822	$339K	0.17%	-250	13F-HR Timeline
Holistic Financial Partners	2,819	$339K	0.13%	+80	13F-HR Timeline
TigerOak Management, L.L.C.	2,806	$338K	0.11%	0	13F-HR Timeline
Cedarwood Wealth LLC	2,805	$337K	0.34%	+161	13F-HR Timeline