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Merck & Co., Inc.

MRK
Exchange
NYSE
Industry
Pharmaceutical Preparations
SEC CIK
0000310158

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, Q2 2025

Institutional positions in Merck & Co., Inc. as of Jun 30, 2025. 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

Institutional holders
3,337
−73 vs. Q1 2025
Shares held
1.97B
−5.75M (−0.3%) vs. Q1 2025
Total value
$155.9B
−$21.3B (−12.0%) vs. Q1 2025
New holders
178
1,301 more added
Sold out
251
1,539 more reduced

49 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: 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 holdersQ2 2025: 3,337 institutions
Q1 2021: 2,693 institutionsQ2 2021: 2,684 institutionsQ3 2021: 2,658 institutionsQ4 2021: 2,910 institutionsQ1 2022: 2,961 institutionsQ2 2022: 3,019 institutionsQ3 2022: 2,996 institutionsQ4 2022: 3,243 institutionsQ1 2023: 3,187 institutionsQ2 2023: 3,261 institutionsQ3 2023: 3,221 institutionsQ4 2023: 3,443 institutionsQ1 2024: 3,546 institutionsQ2 2024: 3,557 institutionsQ3 2024: 3,501 institutionsQ4 2024: 3,618 institutionsQ1 2025: 3,459 institutionsQ2 2025: 3,337 institutionsQ3 2025: 3,319 institutionsQ4 2025: 3,674 institutionsQ1 2026: 3,812 institutionsQ2 2026: 3,855 institutions
Value heldQ2 2025: $155.9B
Q1 2021: $143.2BQ2 2021: $144.3BQ3 2021: $138.8BQ4 2021: $142.2BQ1 2022: $152.1BQ2 2022: $171.5BQ3 2022: $162.7BQ4 2022: $212.2BQ1 2023: $205.1BQ2 2023: $222.8BQ3 2023: $197.7BQ4 2023: $211.6BQ1 2024: $256.9BQ2 2024: $242.3BQ3 2024: $221.8BQ4 2024: $196.9BQ1 2025: $177.7BQ2 2025: $155.9BQ3 2025: $159.8BQ4 2025: $206.6BQ1 2026: $231.9BQ2 2026: $254.3B
Institutions holding MRK and their total value by quarter
QuarterHoldersValue
Q2 20263,855$254.3B
Q1 20263,812$231.9B
Q4 20253,674$206.6B
Q3 20253,319$159.8B
Q2 20253,337$155.9B
Q1 20253,459$177.7B
Q4 20243,618$196.9B
Q3 20243,501$221.8B
Q2 20243,557$242.3B
Q1 20243,546$256.9B
Q4 20233,443$211.6B
Q3 20233,221$197.7B
Q2 20233,261$222.8B
Q1 20233,187$205.1B
Q4 20223,243$212.2B
Q3 20222,996$162.7B
Q2 20223,019$171.5B
Q1 20222,961$152.1B
Q4 20212,910$142.2B
Q3 20212,658$138.8B
Q2 20212,684$144.3B
Q1 20212,693$143.2B

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q1 2025.

Institutions holding MRK in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
MASTERINVEST Kapitalanlage GmbH36,844$2.92M0.31%+36,844New
TSP Capital Management Group, LLC–$2.92M0.92%––
Northside Capital Management, LLC36,804$2.91M0.22%+34,334+1,390.0%Added
Icon Wealth Advisors, LLC36,664$2.90M0.21%−8,873−19.5%Reduced
Magnetar Financial LLC36,596$2.90M0.01%+28,172+334.4%Added
BFSG, LLC36,592$2.90M0.32%+2,407+7.0%Added
Wealthcare Advisory Partners LLC36,582$2.90M0.07%+3,111+9.3%Added
Creegan & Nassoura Financial Group, LLC36,452$2.89M1.88%+915+2.6%Added
Fidelis Capital Partners, LLC36,285$2.88M0.26%−798−2.2%Reduced
IHT Wealth Management, LLC36,346$2.88M0.08%+41+0.1%Added
Founders Financial Securities LLC36,232$2.87M0.22%+13,232+57.5%Added
Financial Partners Group, LLC36,216$2.87M1.04%+6,472+21.8%Added
VestGen Advisors, LLC36,115$2.86M0.11%+15,698+76.9%Added
Dean Investment Associates, LLC36,125$2.86M0.42%+579+1.6%Added
PFG Advisors36,085$2.86M0.14%+4,432+14.0%Added
Dakota Wealth Management35,945$2.85M0.06%+114+0.3%Added
Financial Advisory Service, Inc.35,842$2.84M0.21%+244+0.7%Added
Horizon Kinetics Asset Management LLC35,835$2.84M0.03%+1,761+5.2%Added
Littlejohn Financial Services, Inc.35,794$2.83M2.19%+14,009+64.3%Added
MainStreet Investment Advisors LLC35,717$2.83M0.39%−1,892−5.0%Reduced
South State Corp.35,682$2.82M0.12%+1,436+4.2%Added
GSB Wealth Management, LLC35,644$2.82M0.69%−2,544−6.7%Reduced
Armis Advisers, LLC34,497$2.82M0.22%+6,070+21.4%Added
AlphaCore Capital LLC35,203$2.81M0.11%+8,062+29.7%Added
LS Investment Advisors, LLC35,451$2.81M0.41%+2,995+9.2%Added
U.S. Capital Wealth Advisors, LLC35,420$2.80M0.08%+2,532+7.7%Added
Marshall Financial Group LLC34,627$2.80M0.55%+6,058+21.2%Added
Albion Financial Group35,327$2.80M0.18%+3,182+9.9%Added
Advisor OS, LLC35,303$2.79M0.28%+2,745+8.4%Added
Holderness Investments Co35,271$2.79M0.60%−9,746−21.6%Reduced
Integrated Advisors Network LLC35,235$2.79M0.13%−4,979−12.4%Reduced
Edgestream Partners, L.P.35,207$2.79M0.08%+5,049+16.7%Added
Family Legacy, Inc.35,156$2.78M0.90%+60+0.2%Added
Opus Investment Management Inc35,000$2.77M1.84%00.0%Unchanged
Cobblestone Capital Advisors LLC34,897$2.76M0.14%+589+1.7%Added
DT Investment Partners, LLC34,645$2.74M0.25%00.0%Unchanged
Conning Inc.34,578$2.74M0.09%−548−1.6%Reduced
Berkshire Bank34,569$2.74M0.62%+2,708+8.5%Added
Marathon Capital Management34,527$2.73M0.70%−482−1.4%Reduced
3Chopt Investment Partners, LLC34,152$2.73M0.66%−2,848−7.7%Reduced
St. Louis Financial Planners Asset Management, LLC34,372$2.72M2.07%+34,372New
Palisade Asset Management, LLC34,186$2.71M0.27%+830+2.5%Added
Abbot Financial Management, Inc.34,177$2.71M1.25%+2,187+6.8%Added
Walter & Keenan Financial Consulting Co34,168$2.70M0.79%+607+1.8%Added
Jarislowsky, Fraser Ltd34,150$2.70M0.02%−515−1.5%Reduced
Global Financial Private Client, LLC34,002$2.69M1.01%+3,509+11.5%Added
Supplemental Annuity Collective Trust of NJ34,000$2.69M0.76%00.0%Unchanged
Money Concepts Capital Corp33,974$2.69M0.18%+1,344+4.1%Added
ACR Alpine Capital Research, LLC33,822$2.68M0.05%+696+2.1%Added
Vestmark Advisory Solutions, Inc.33,818$2.68M0.04%−7,948−19.0%Reduced
Charter Research & Investment Group, Inc.33,802$2.68M2.00%−836−2.4%Reduced
First National Bank & Trust Co of Newtown33,732$2.67M0.53%−100−0.3%Reduced
Shepherd Financial Partners LLC33,636$2.66M0.28%−2,309−6.4%Reduced
Morton Community Bank33,583$2.66M0.66%+635+1.9%Added
Arete Wealth Advisors, LLC33,400$2.64M0.19%+670+2.0%Added
Westerkirk Capital Inc.33,400$2.64M0.33%+33,400New
Strategy Asset Managers LLC33,321$2.64M0.49%+795+2.4%Added
Welch Group, LLC33,286$2.63M0.11%+1,419+4.5%Added
Marathon Trading Investment Management LLC33,221$2.63M1.58%+32,951+12,204.1%Added
Rehmann Capital Advisory Group33,204$2.63M0.16%+409+1.2%Added
Exchange Traded Concepts, LLC33,116$2.62M0.03%+3,132+10.4%Added
Atomi Financial Group, Inc.33,114$2.62M0.10%−2,132−6.0%Reduced
Brown, Lisle/Cummings, Inc.33,085$2.62M0.70%−2,330−6.6%Reduced
Investor's Fiduciary Advisor Network, LLC33,085$2.62M0.97%+5,511+20.0%Added
HBW Advisory Services LLC32,973$2.61M0.32%+6,583+24.9%Added
Alpha Omega Wealth Management LLC32,937$2.61M0.47%−146−0.4%Reduced
Sagespring Wealth Partners, LLC32,751$2.59M0.06%−10,958−25.1%Reduced
Diversify Advisory Services, LLC32,256$2.59M0.10%+15,636+94.1%Added
Stonebridge Financial Group, LLC32,711$2.59M0.25%−14,293−30.4%Reduced
Moloney Securities Asset Management, LLC32,655$2.58M0.32%−10,944−25.1%Reduced
Wynn Capital, LLC32,453$2.57M1.37%−36−0.1%Reduced
Norden Group LLC32,359$2.56M0.28%+121+0.4%Added
ESG Planning32,344$2.56M1.43%−5,202−13.9%Reduced
Delta Global Management LP32,196$2.55M0.17%+5,546+20.8%Added
McIntyre Freedman & Flynn Investment Advisers Inc32,189$2.55M1.80%+201+0.6%Added
Lodestone Wealth Management LLC31,925$2.53M1.23%+269+0.8%Added
Quadrant Private Wealth Management, LLC31,561$2.53M0.52%−1,766−5.3%Reduced
Wills Financial Group LLC31,819$2.52M1.09%−995−3.0%Reduced
EagleClaw Capital Managment, LLC31,818$2.52M0.38%00.0%Unchanged
Eqis Capital Management, Inc.31,755$2.51M0.20%+12,095+61.5%Added
Kentucky Farm Bureau Mutual Insurance Co31,718$2.51M0.54%00.0%Unchanged
Skopos Labs, Inc.31,683$2.51M0.33%+8,913+39.1%Added
Herold Advisors, Inc.31,566$2.50M0.52%−2,859−8.3%Reduced
Essex Savings Bank31,378$2.48M0.59%−1,440−4.4%Reduced
Chicago Partners Investment Group LLC29,559$2.48M0.07%+6,263+26.9%Added
A. D. Beadell Investment Counsel, Inc.31,132$2.46M1.88%+295+1.0%Added
Beacon Investment Advisory Services, Inc.31,106$2.46M0.11%−55,229−64.0%Reduced
IFP Advisors, Inc30,997$2.45M0.07%+1,833+6.3%Added
Essex LLC30,978$2.45M0.48%+1,650+5.6%Added
Angeles Wealth Management, LLC30,932$2.45M0.17%−1,903−5.8%Reduced
Gould Capital, LLC30,920$2.45M1.64%+1,106+3.7%Added
Patten Group, Inc.30,913$2.45M0.52%+140+0.5%Added
Penobscot Investment Management Company, Inc.30,839$2.44M0.21%−8,886−22.4%Reduced
Boyd Watterson Asset Management LLC30,799$2.44M0.77%−60−0.2%Reduced
Eagle Rock Investment Company, LLC30,783$2.44M0.39%−5,057−14.1%Reduced
Malaga Cove Capital, LLC30,742$2.43M0.96%+2,291+8.1%Added
Generali Investments CEE, investicni spolecnost, a.s.30,728$2.43M0.20%00.0%Unchanged
Duncker Streett & Co Inc30,635$2.43M0.44%+437+1.4%Added
Stonegate Investment Group, LLC30,623$2.42M0.06%−247−0.8%Reduced
Allegheny Financial Group LTD30,500$2.41M0.54%−359−1.2%Reduced