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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
Pinnacle Bancorp, Inc.9,566$1.23M0.32%+2,167+29.3%Added
Silver Oak Securities, Inc9,556$1.23M0.07%−85−0.9%Reduced
Fiduciary Family Office, LLC9,551$1.23M0.31%−1,314−12.1%Reduced
Guardian Wealth Advisors, LLC9,528$1.22M0.07%+25+0.3%Added
Institute for Wealth Management, LLC.9,515$1.22M0.11%−51−0.5%Reduced
Cove Private Wealth, LLC9,510$1.22M0.24%+2,545+36.5%Added
Intellectus Partners, LLC9,435$1.22M0.21%−194−2.0%Reduced
Pinnacle West Asset Management, Inc.9,470$1.22M0.84%00.0%Unchanged
Pettee Investors, Inc.9,465$1.22M0.60%00.0%Unchanged
Constant Guidance Financial LLC9,440$1.21M0.76%+9,440New
San Luis Wealth Advisors LLC9,440$1.21M0.18%−1,381−12.8%Reduced
Ridgewood Investments LLC9,440$1.21M0.45%−1,270−11.9%Reduced
Everpar Advisors LLC9,417$1.21M0.34%−123−1.3%Reduced
Optas, LLC9,402$1.21M0.17%−692−6.9%Reduced
Pines Wealth Management, LLC9,388$1.21M0.35%+195+2.1%Added
Ambassador Advisors, LLC9,353$1.20M0.15%−270−2.8%Reduced
Blodgett Wealth Advisors, LLC9,334$1.20M0.80%+10.0%Added
Farmers National Bank9,329$1.20M0.25%−411−4.2%Reduced
Caitong International Asset Management Co., Ltd9,320$1.20M0.16%+476+5.4%Added
Quent Capital, LLC9,312$1.20M0.07%−187−2.0%Reduced
Everstar Asset Management, LLC9,312$1.20M0.58%−765−7.6%Reduced
Gluskin Sheff & Assoc Inc9,303$1.20M0.18%+2,008+27.5%Added
Frisch Financial Group, Inc.9,241$1.20M0.21%+20.0%Added
Hohimer Wealth Management, LLC9,295$1.19M0.12%−20,925−69.2%Reduced
BridgePort Financial Solutions, LLC9,290$1.19M0.30%−26−0.3%Reduced
Elevate Capital Advisors, LLC9,287$1.19M0.66%−655−6.6%Reduced
Lafayette Investments, Inc.9,275$1.19M0.22%−360−3.7%Reduced
Gratus Wealth Advisors, LLC9,246$1.19M0.15%−74−0.8%Reduced
TCI Wealth Advisors, Inc.9,242$1.19M0.05%+622+7.2%Added
Alliance Wealth Management Group9,225$1.19M0.23%00.0%Unchanged
Towercrest Capital Management9,225$1.19M0.17%00.0%Unchanged
Crumly & Associates Inc.9,224$1.19M0.23%+1,993+27.6%Added
Gilbert & Cook, Inc.9,210$1.18M0.14%+126+1.4%Added
Stonebridge Financial Group, LLC9,139$1.18M0.16%+9,139New
Carnegie Lake Advisors LLC9,173$1.18M0.44%+53+0.6%Added
Caldwell Sutter Capital, Inc.9,164$1.18M0.44%−230−2.4%Reduced
COFG Advisors, LLC9,159$1.18M0.20%+362+4.1%Added
Legal Advantage Investments, Inc.9,140$1.17M0.41%+100+1.1%Added
Peddock Capital Advisors, LLC9,129$1.17M0.23%+100+1.1%Added
Oxford Wealth Group, LLC9,125$1.17M0.52%+155+1.7%Added
Sage Mountain Advisors LLC9,098$1.17M0.07%+880+10.7%Added
Asahi Life Asset Management Co., Ltd.9,092$1.17M0.66%−3,066−25.2%Reduced
Schnieders Capital Management, LLC.9,070$1.17M0.15%+1,010+12.5%Added
First Business Financial Services, Inc.9,062$1.16M0.09%+258+2.9%Added
Rayburn West Financial Services LLC9,059$1.16M0.64%−1,578−14.8%Reduced
Larry Mathis Financial Planning, LLC9,013$1.16M0.88%+210+2.4%Added
Winnow Wealth LLC9,010$1.16M0.79%−365−3.9%Reduced
Analyst IMS Investment Management Services Ltd.8,995$1.16M0.03%−1,784−16.6%Reduced
Kapstone Financial Advisors LLC8,968$1.15M0.48%00.0%Unchanged
Diversified Management Inc8,961$1.15M0.25%−5,662−38.7%Reduced
49 Wealth Management, LLC8,956$1.15M0.22%+6,781+311.8%Added
Alongside, LLC8,956$1.15M0.22%+8,956New
Spirit of America Management Corp8,950$1.15M0.22%00.0%Unchanged
Howard Financial Services, Ltd.8,945$1.15M0.11%+472+5.6%Added
Verity Asset Management, Inc.8,942$1.15M0.43%−260−2.8%Reduced
Tulsa Wealth Advisors, INC8,937$1.15M0.16%−573−6.0%Reduced
Sagewood Asset Management LP8,934$1.15M0.26%+368+4.3%Added
Compass Capital Corp8,689$1.14M0.37%−267−3.0%Reduced
Glen Eagle Advisors, LLC8,886$1.14M0.14%+718+8.8%Added
CoreFirst Bank & Trust8,877$1.14M0.57%−25−0.3%Reduced
L2 Asset Management, LLC8,861$1.14M0.12%−5,244−37.2%Reduced
Mine & Arao Wealth Creation & Management, LLC.8,854$1.14M0.41%+40.0%Added
Shore Point Advisors, LLC8,837$1.14M0.39%00.0%Unchanged
Hikari Tsushin, Inc.8,812$1.13M0.08%00.0%Unchanged
Reliant Investment Partners, LLC8,800$1.13M0.77%+8+0.1%Added
Advisory Alpha, LLC8,797$1.13M0.03%+1,594+22.1%Added
Promethium Advisors,llc8,728$1.13M0.54%00.0%Unchanged
Washington Capital Management Inc8,783$1.13M0.74%+1,850+26.7%Added
Investors Research Corp8,779$1.13M0.20%−179−2.0%Reduced
Adirondack Trust Co8,753$1.12M0.34%−66−0.7%Reduced
Fulton Breakefield Broenniman LLC8,751$1.12M0.07%−289−3.2%Reduced
Stonebridge Financial Group, LLC8,747$1.12M0.09%+81+0.9%Added
Baldwin Investment Management, LLC8,728$1.12M0.11%+3,358+62.5%Added
Somerset Trust Co8,701$1.12M0.32%+81+0.9%Added
Aurora Private Wealth, Inc.8,690$1.12M0.71%−271−3.0%Reduced
Argentarii, LLC8,564$1.12M0.34%−1,309−13.3%Reduced
General Partner, Inc.8,686$1.12M0.60%00.0%Unchanged
Foster Dykema Cabot & Partners, LLC8,626$1.12M0.06%00.0%Unchanged
Lakeshore Capital Group, Inc.8,676$1.11M0.83%+16+0.2%Added
Weinberger Asset Management, Inc8,545$1.11M0.36%+25+0.3%Added
Colonial Trust Advisors8,658$1.11M0.08%−649−7.0%Reduced
Eubel Brady & Suttman Asset Management Inc8,638$1.11M0.13%00.0%Unchanged
SmartHarvest Portfolios, LLC8,628$1.11M0.36%+1,968+29.5%Added
Johnson Financial Group, LLC8,613$1.11M0.06%+882+11.4%Added
Matrix Private Capital Group LLC8,551$1.11M0.48%+175+2.1%Added
Coston, McIsaac & Partners8,609$1.11M0.22%+5+0.1%Added
Aegis Wealth Management, Inc.8,599$1.10M0.71%−87−1.0%Reduced
Tyche Wealth Partners LLC8,583$1.10M0.15%−2,858−25.0%Reduced
BCJ Capital Management, LLC8,583$1.10M0.05%+1,290+17.7%Added
BBR Partners, LLC8,577$1.10M0.05%−406−4.5%Reduced
Cape Cod Five Cents Savings Bank8,577$1.10M0.09%+8,577New
Greenfield Savings Bank8,547$1.10M0.42%+105+1.2%Added
Fortress Private Ledger, LLC8,543$1.10M0.30%+3,667+75.2%Added
Net Worth Advisory Group8,520$1.09M0.28%−365−4.1%Reduced
Dark Forest Capital Management LP8,518$1.09M0.07%+8,518New
Financial Engines Advisors L.L.C.8,510$1.09M0.00%+165+2.0%Added
Bank of New Hampshire8,478$1.09M0.23%−85−1.0%Reduced
Patriot Investment Management Inc.8,465$1.09M0.06%−629−6.9%Reduced
Papp L Roy & Associates8,457$1.09M0.11%−369−4.2%Reduced
Yarger Wealth Strategies, LLC8,782$1.08M0.39%+698+8.6%Added