Merck & Co., Inc.

MRK

Exchange: NYSE
Industry: Pharmaceutical Preparations
SEC CIK: 0000310158

SEC filings (opens in a new tab)

In the last 90 days, Merck & Co., Inc. insiders filed 0 open-market purchases and 7 sales; 3,855 institutions reported holding it in 13F filings for Q2 2026, worth $254.3B in total; 4 superinvestors hold it, including Harris Associates (Oakmark) and Fairfax Financial.

13F holders, Q3 2026

Institutional positions in Merck & Co., Inc. as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 43; +2 vs. Q2 2026
Shares held: 3.01M; −129.5K (−4.1%) vs. Q2 2026
Total value: $439.3M; +$36.4M (+9.0%) vs. Q2 2026
New holders: 2; 12 more added
Sold out: 0; 23 more reduced

3,814 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MRK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders

Value held

Institutions holding MRK and their total value by quarter
Quarter	Holders	Value
Q2 2026	3,855	$254.3B
Q1 2026	3,812	$231.9B
Q4 2025	3,674	$206.6B
Q3 2025	3,319	$159.8B
Q2 2025	3,337	$155.9B
Q1 2025	3,459	$177.7B
Q4 2024	3,618	$196.9B
Q3 2024	3,501	$221.8B
Q2 2024	3,557	$242.3B
Q1 2024	3,546	$256.9B
Q4 2023	3,443	$211.6B
Q3 2023	3,221	$197.7B
Q2 2023	3,261	$222.8B
Q1 2023	3,187	$205.1B
Q4 2022	3,243	$212.2B
Q3 2022	2,996	$162.7B
Q2 2022	3,019	$171.5B
Q1 2022	2,961	$152.1B
Q4 2021	2,910	$142.2B
Q3 2021	2,658	$138.8B
Q2 2021	2,684	$144.3B
Q1 2021	2,693	$143.2B

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q2 2026.

Institutions holding MRK in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Osmosis Investment Management UK Ltd	–	–	–	–	Not filed
Bank of Hawaii	–	–	–	–	Not filed
St. Louis Financial Planners Asset Management, LLC	–	–	–	–	Not filed
TFC Financial Management	–	–	–	–	Not filed
Founders Capital Management	–	–	–	–	Not filed
Hilltop Holdings Inc.	–	–	–	–	Not filed
CWA Asset Management Group, LLC	–	–	–	–	Not filed
Vickerman Investment Advisors, Inc.	–	–	–	–	Not filed
Foster & Motley Inc	–	–	–	–	Not filed
Jamison Private Wealth Management, Inc.	–	–	–	–	Not filed
MASTERINVEST Kapitalanlage GmbH	–	–	–	–	Not filed
St Germain D J Co Inc	–	–	–	–	Not filed
Connor, Clark & Lunn Investment Management Ltd.	–	–	–	–	Not filed
Hilton Capital Management, LLC	–	–	–	–	Not filed
NBC Securities, Inc.	–	–	–	–	Not filed
Tower Research Capital LLC (TRC)	–	–	–	–	Not filed
Apella Capital, LLC	–	–	–	–	Not filed
Frank, Rimerman Advisors LLC	–	–	–	–	Not filed
TSP Capital Management Group, LLC	–	–	–	–	Not filed
Latko Wealth Management, Ltd.	–	–	–	–	Not filed
Sivik Global Healthcare LLC	–	–	–	–	Not filed
Angeles Wealth Management, LLC	–	–	–	–	Not filed
Kensington Investment Counsel, LLC	–	–	–	–	Not filed
Abbot Financial Management, Inc.	–	–	–	–	Not filed
Oversea-Chinese Banking CORP Ltd	–	–	–	–	Not filed
Welch Group, LLC	–	–	–	–	Not filed
Oakworth Capital, Inc.	–	–	–	–	Not filed
Arete Wealth Advisors, LLC	–	–	–	–	Not filed
Rowland & Co Investment Counsel	–	–	–	–	Not filed
Strategy Asset Managers LLC	–	–	–	–	Not filed
Advisor OS, LLC	–	–	–	–	Not filed
Brown Shipley& Co Ltd	–	–	–	–	Not filed
Prestige Wealth Management Group LLC	–	–	–	–	Not filed
Keel Point, LLC	–	–	–	–	Not filed
BLB&B Advisors, LLC	–	–	–	–	Not filed
Proficio Capital Partners LLC	–	–	–	–	Not filed
NorthRock Partners, LLC	–	–	–	–	Not filed
Manchester Capital Management LLC	–	–	–	–	Not filed
Insigneo Advisory Services, LLC	–	–	–	–	Not filed
Lineweaver Wealth Advisors, LLC	–	–	–	–	Not filed
BFSG, LLC	–	–	–	–	Not filed
Symphony Financial, Ltd. Co.	–	–	–	–	Not filed
Aprio Wealth Management, LLC	–	–	–	–	Not filed
Marshall Financial Group LLC	–	–	–	–	Not filed
Primecap Management Co	–	–	–	–	Not filed
Boyd Watterson Asset Management LLC	–	–	–	–	Not filed
Dorsey & Whitney Trust CO LLC	–	–	–	–	Not filed
Caldwell Trust Co	–	–	–	–	Not filed
Palisade Asset Management, LLC	–	–	–	–	Not filed
Northside Capital Management, LLC	–	–	–	–	Not filed
Family Legacy, Inc.	–	–	–	–	Not filed
Osprey Private Wealth LLC	–	–	–	–	Not filed
Ally Financial Inc.	–	–	–	–	Not filed
Opus Investment Management Inc	–	–	–	–	Not filed
Wealthcare Advisory Partners LLC	–	–	–	–	Not filed
Tower Bridge Advisors	–	–	–	–	Not filed
Magnolia Capital Advisors LLC	–	–	–	–	Not filed
Jackson Square Capital, LLC	–	–	–	–	Not filed
Family Management Corp	–	–	–	–	Not filed
Community Trust & Investment Co	–	–	–	–	Not filed
Frec Markets, Inc.	–	–	–	–	Not filed
White Pine Capital LLC	–	–	–	–	Not filed
Berkshire Asset Management LLC	–	–	–	–	Not filed
Beech Hill Advisors, Inc.	–	–	–	–	Not filed
Avidian Wealth Solutions, LLC	–	–	–	–	Not filed
Visionary Wealth Advisors	–	–	–	–	Not filed
Profund Advisors LLC	–	–	–	–	Not filed
Kovitz Investment Group Partners, LLC	–	–	–	–	Not filed
Washington Trust Co	–	–	–	–	Not filed
WealthPlan Investment Management, LLC	–	–	–	–	Not filed
Westpac Banking Corp	–	–	–	–	Not filed
Brown, Lisle/Cummings, Inc.	–	–	–	–	Not filed
KCM Capital Inc	–	–	–	–	Not filed
Morse Asset Management, Inc	–	–	–	–	Not filed
Lodestone Wealth Management LLC	–	–	–	–	Not filed
Holderness Investments Co	–	–	–	–	Not filed
Shepherd Financial Partners LLC	–	–	–	–	Not filed
Morningstar Investment Management LLC	–	–	–	–	Not filed
Mechanics Bank Trust Department	–	–	–	–	Not filed
Money Concepts Capital Corp	–	–	–	–	Not filed
Wynn Capital, LLC	–	–	–	–	Not filed
Lockheed Martin Investment Management Co	–	–	–	–	Not filed
DKRT Investments Corp.	–	–	–	–	Not filed
NVWM, LLC	–	–	–	–	Not filed
Brooks, Moore & Associates, Inc.	–	–	–	–	Not filed
GSB Wealth Management, LLC	–	–	–	–	Not filed
Jacobs Levy Equity Management, Inc	–	–	–	–	Not filed
Carolina Wealth Advisors, LLC	–	–	–	–	Not filed
VestGen Advisors, LLC	–	–	–	–	Not filed
Pathway Financial Advisers, LLC	–	–	–	–	Not filed
Banque Transatlantique SA	–	–	–	–	Not filed
McMillan Office, Inc.	–	–	–	–	Not filed
Resonant Capital Advisors, LLC	–	–	–	–	Not filed
Kentucky Farm Bureau Mutual Insurance Co	–	–	–	–	Not filed
Stolper Co	–	–	–	–	Not filed
Herold Advisors, Inc.	–	–	–	–	Not filed
Western Wealth Management, LLC	–	–	–	–	Not filed
Kingswood Wealth Advisors, LLC	–	–	–	–	Not filed
Penobscot Investment Management Company, Inc.	–	–	–	–	Not filed
R.H. Dinel Investment Counsel, Inc.	–	–	–	–	Not filed