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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 2026

Institutional positions in Merck & Co., Inc. as of Jun 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: 43 institutions have reported holding MRK so far. See Q3 2026

Institutional holders
3,855
+96 vs. Q1 2026
Shares held
1.98B
+52.6M (+2.7%) vs. Q1 2026
Total value
$254.3B
+$23.0B (+9.9%) vs. Q1 2026
New holders
214
1,635 more added
Sold out
118
1,508 more reduced

53 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2026: 3,855 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 2026: $254.3B
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 2026

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q1 2026.

Institutions holding MRK in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Borer Denton & Associates, Inc.20,553$2.64M0.87%+1,305+6.8%Added
Brady Martz Wealth Solutions, LLC20,562$2.64M0.40%+449+2.2%Added
Next Level Private LLC20,575$2.64M0.52%+59+0.3%Added
Moody National Bank Trust Division20,628$2.65M0.22%−563−2.7%Reduced
SWS Partners20,508$2.65M0.57%+1,027+5.3%Added
RFG Advisory, LLC20,666$2.66M0.04%−5,172−20.0%Reduced
Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors20,685$2.66M0.29%−10,387−33.4%Reduced
IMA Wealth, Inc.20,561$2.66M0.17%+991+5.1%Added
Brandywine Oak Private Wealth LLC20,784$2.67M0.20%−200−1.0%Reduced
Marathon Wealth Advisors LLC20,801$2.67M0.91%+205+1.0%Added
Calamos Wealth Management LLC20,811$2.67M0.08%−10.0%Reduced
Fairfield, Bush & Co.20,842$2.68M1.32%−405−1.9%Reduced
Ancora Advisors, LLC20,902$2.69M0.05%−1,390−6.2%Reduced
Nwam LLC20,971$2.69M0.13%+10,124+93.3%Added
Red Cedar Investment Management, LLC20,972$2.69M0.26%00.0%Unchanged
Portside Wealth Group, LLC21,032$2.70M0.32%+1,051+5.3%Added
Childress Capital Advisors, LLC21,037$2.70M0.44%−905−4.1%Reduced
IVC Wealth Advisors LLC21,139$2.72M1.06%−55−0.3%Reduced
Coastal Bridge Advisors, LLC21,141$2.72M0.17%+92+0.4%Added
Drucker Wealth 3.0, LLC21,201$2.72M0.43%−209−1.0%Reduced
Montecito Bank & Trust21,223$2.73M0.41%−459−2.1%Reduced
Sheets Smith Wealth Management21,343$2.74M0.27%−39−0.2%Reduced
HighPoint Advisor Group LLC21,349$2.74M0.10%+1,136+5.6%Added
Waddell & Associates, LLC21,357$2.74M0.14%+425+2.0%Added
Cozad Asset Management Inc21,402$2.75M0.18%+221+1.0%Added
Archer Investment Corp21,453$2.76M0.53%−2,639−11.0%Reduced
SeaCrest Wealth Management, LLC21,502$2.76M0.31%−13,066−37.8%Reduced
NTV Asset Management LLC21,525$2.77M0.27%+50.0%Added
Johnson Financial Group, Inc.21,390$2.77M0.09%−680−3.1%Reduced
Peak Asset Management, LLC21,535$2.77M0.41%+4,500+26.4%Added
First PREMIER Bank21,539$2.77M0.45%−473−2.1%Reduced
Sectoral Asset Management Inc21,480$2.77M1.94%00.0%Unchanged
Beaton Management Co. Inc.21,587$2.77M1.13%−100−0.5%Reduced
Silverlake Wealth Management LLC21,599$2.78M0.53%+728+3.5%Added
ARS Investment Partners, LLC21,672$2.78M0.12%−394−1.8%Reduced
ESG Planning21,760$2.80M0.94%−25−0.1%Reduced
Wealth Alliance21,770$2.80M0.23%−1,258−5.5%Reduced
Traynor Capital Management, Inc.21,894$2.81M0.13%−621−2.8%Reduced
Sierra Summit Advisors LLC21,917$2.82M0.31%+354+1.6%Added
Bank Ozk21,993$2.83M0.84%−565−2.5%Reduced
Bamco Inc22,000$2.83M0.00%−3,000−12.0%Reduced
Sippican Capital Advisors22,030$2.83M1.73%00.0%Unchanged
Private Wealth Asset Management, LLC22,055$2.83M0.27%+2,581+13.3%Added
Enhancing Capital LLC22,067$2.84M1.95%00.0%Unchanged
SCS Capital Management LLC21,998$2.84M0.03%−615−2.7%Reduced
Shrier Wealth Management, LLC22,112$2.84M0.96%+177+0.8%Added
Birmingham Capital Management Co Inc22,128$2.84M1.08%−850−3.7%Reduced
McIntyre Freedman & Flynn Investment Advisers Inc22,154$2.85M1.71%−7,850−26.2%Reduced
CNB Bank22,166$2.85M1.11%+751+3.5%Added
Peoples Financial Services Corp.22,170$2.85M1.23%−63−0.3%Reduced
Dominguez Wealth Management Solutions, Inc.22,203$2.85M1.57%−35−0.2%Reduced
Cornerstone Wealth Management, LLC22,273$2.86M0.12%+191+0.9%Added
Private Management Group Inc22,282$2.86M0.08%−120−0.5%Reduced
Reynders McVeigh Capital Management, LLC22,379$2.88M0.13%−80.0%Reduced
LS Investment Advisors, LLC22,418$2.88M0.39%−8,755−28.1%Reduced
Littlejohn Financial Services, Inc.22,440$2.88M2.10%−1,446−6.1%Reduced
Forty-three Eighteen Advisors, LLC22,442$2.88M1.94%+548+2.5%Added
LVW Advisors, LLC22,654$2.91M0.25%−1,590−6.6%Reduced
Monument Capital Management22,665$2.91M0.59%+710+3.2%Added
Wellington Shields & Co., LLC22,666$2.91M0.65%−600−2.6%Reduced
Gilliland Jeter Wealth Management LLC22,675$2.91M0.76%−1,054−4.4%Reduced
Key Financial Inc22,676$2.91M0.48%−2,536−10.1%Reduced
Callahan Advisors, LLC22,700$2.92M0.22%−702−3.0%Reduced
MMBG Investment Advisors Co.22,563$2.92M0.23%00.0%Unchanged
Genus Capital Management Inc.22,719$2.92M0.29%−80,267−77.9%Reduced
Brown Miller Wealth Management, LLC22,736$2.92M0.74%00.0%Unchanged
Berkshire Bank22,741$2.92M0.56%−2,553−10.1%Reduced
MV Capital Management, Inc.22,792$2.93M0.26%−359−1.6%Reduced
Optimist Retirement Group LLC22,801$2.93M1.13%−39−0.2%Reduced
Mystic Asset Management, Inc.22,899$2.94M0.63%−1,546−6.3%Reduced
Sumitomo Life Insurance Co22,968$2.95M0.05%−1,327−5.5%Reduced
Journey Advisory Group, LLC23,149$2.97M0.23%−540−2.3%Reduced
Deseret Mutual Benefit Administrators23,182$2.98M0.97%−2,898−11.1%Reduced
OmniStar Financial Group, Inc.23,190$2.98M1.37%+1,804+8.4%Added
Flavin Financial Services, Inc.23,296$2.99M1.71%+3,163+15.7%Added
Lawood & Co23,298$2.99M2.03%−145−0.6%Reduced
Precedent Wealth Partners, LLC23,322$3.00M0.50%+572+2.5%Added
Marathon Capital Management23,351$3.00M0.61%−334−1.4%Reduced
Cigna Investments Inc23,473$3.02M0.39%−203−0.9%Reduced
Broderick Brian C23,484$3.02M0.47%+1,234+5.5%Added
Checchi Capital Advisers, LLC23,506$3.02M0.19%−279−1.2%Reduced
IAM Advisory, LLC23,515$3.02M0.59%+278+1.2%Added
Zhang Financial LLC23,571$3.03M0.09%+322+1.4%Added
Allen Wealth Management, LLC23,602$3.03M1.48%−1,593−6.3%Reduced
Brendel Financial Advisors LLC23,668$3.04M1.41%00.0%Unchanged
Davis R M Inc23,586$3.05M0.05%−809−3.3%Reduced
Massachusetts Wealth Management23,717$3.05M1.16%+110+0.5%Added
Catalyst Funds Management Pty Ltd23,750$3.05M0.17%+20,134+556.8%Added
Ellevest, Inc.23,926$3.05M0.36%+349+1.5%Added
Bridgewater Advisors Inc.23,905$3.05M0.17%+96+0.4%Added
Madison Asset Management, LLC23,786$3.06M0.04%−105−0.4%Reduced
Bull Harbor Capital LLC23,810$3.06M0.60%+119+0.5%Added
Forum Finance Group S.A.29,485$3.06M1.10%+1,705+6.1%Added
WCG Wealth Advisors LLC23,852$3.07M0.07%+144+0.6%Added
Nations Financial Group Inc,23,911$3.07M0.15%+478+2.0%Added
Harbor Advisory Corp23,912$3.07M0.82%00.0%Unchanged
Ausdal Financial Partners, Inc.23,933$3.08M0.12%+2,541+11.9%Added
Cornerstone Wealth Group, LLC23,956$3.08M0.18%+564+2.4%Added
Capital Asset Advisory Services LLC23,955$3.08M0.11%+1,715+7.7%Added
Smith, Moore & Co.23,976$3.08M0.20%−1,997−7.7%Reduced