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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: 20 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: 2,962 institutionsQ2 2022: 3,020 institutionsQ3 2022: 2,997 institutionsQ4 2022: 3,244 institutionsQ1 2023: 3,188 institutionsQ2 2023: 3,262 institutionsQ3 2023: 3,222 institutionsQ4 2023: 3,444 institutionsQ1 2024: 3,547 institutionsQ2 2024: 3,558 institutionsQ3 2024: 3,502 institutionsQ4 2024: 3,619 institutionsQ1 2025: 3,460 institutionsQ2 2025: 3,338 institutionsQ3 2025: 3,320 institutionsQ4 2025: 3,675 institutionsQ1 2026: 3,813 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 20263,813$231.9B
Q4 20253,675$206.6B
Q3 20253,320$159.8B
Q2 20253,338$155.9B
Q1 20253,460$177.7B
Q4 20243,619$196.9B
Q3 20243,502$221.8B
Q2 20243,558$242.3B
Q1 20243,547$256.9B
Q4 20233,444$211.6B
Q3 20233,222$197.7B
Q2 20233,262$222.8B
Q1 20233,188$205.1B
Q4 20223,244$212.2B
Q3 20222,997$162.7B
Q2 20223,020$171.5B
Q1 20222,962$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
Howard Financial Services, Ltd.8,945$1.15M0.11%+472+5.6%Added
Spirit of America Management Corp8,950$1.15M0.22%00.0%Unchanged
49 Wealth Management, LLC8,956$1.15M0.22%+6,781+311.8%Added
Alongside, LLC8,956$1.15M0.22%+8,956New
Diversified Management Inc8,961$1.15M0.25%−5,662−38.7%Reduced
Kapstone Financial Advisors LLC8,968$1.15M0.48%00.0%Unchanged
Analyst IMS Investment Management Services Ltd.8,995$1.16M0.03%−1,784−16.6%Reduced
Winnow Wealth LLC9,010$1.16M0.79%−365−3.9%Reduced
Larry Mathis Financial Planning, LLC9,013$1.16M0.88%+210+2.4%Added
Rayburn West Financial Services LLC9,059$1.16M0.64%−1,578−14.8%Reduced
First Business Financial Services, Inc.9,062$1.16M0.09%+258+2.9%Added
Schnieders Capital Management, LLC.9,070$1.17M0.15%+1,010+12.5%Added
Asahi Life Asset Management Co., Ltd.9,092$1.17M0.66%−3,066−25.2%Reduced
Sage Mountain Advisors LLC9,098$1.17M0.07%+880+10.7%Added
Oxford Wealth Group, LLC9,125$1.17M0.52%+155+1.7%Added
Peddock Capital Advisors, LLC9,129$1.17M0.23%+100+1.1%Added
Legal Advantage Investments, Inc.9,140$1.17M0.41%+100+1.1%Added
COFG Advisors, LLC9,159$1.18M0.20%+362+4.1%Added
Caldwell Sutter Capital, Inc.9,164$1.18M0.44%−230−2.4%Reduced
Carnegie Lake Advisors LLC9,173$1.18M0.44%+53+0.6%Added
Stonebridge Financial Group, LLC9,139$1.18M0.16%+9,139New
Gilbert & Cook, Inc.9,210$1.18M0.14%+126+1.4%Added
Crumly & Associates Inc.9,224$1.19M0.23%+1,993+27.6%Added
Alliance Wealth Management Group9,225$1.19M0.23%00.0%Unchanged
Towercrest Capital Management9,225$1.19M0.17%00.0%Unchanged
TCI Wealth Advisors, Inc.9,242$1.19M0.05%+622+7.2%Added
Gratus Wealth Advisors, LLC9,246$1.19M0.15%−74−0.8%Reduced
Lafayette Investments, Inc.9,275$1.19M0.22%−360−3.7%Reduced
Elevate Capital Advisors, LLC9,287$1.19M0.66%−655−6.6%Reduced
BridgePort Financial Solutions, LLC9,290$1.19M0.30%−26−0.3%Reduced
Hohimer Wealth Management, LLC9,295$1.19M0.12%−20,925−69.2%Reduced
Frisch Financial Group, Inc.9,241$1.20M0.21%+20.0%Added
Gluskin Sheff & Assoc Inc9,303$1.20M0.18%+2,008+27.5%Added
Everstar Asset Management, LLC9,312$1.20M0.58%−765−7.6%Reduced
Quent Capital, LLC9,312$1.20M0.07%−187−2.0%Reduced
Caitong International Asset Management Co., Ltd9,320$1.20M0.16%+476+5.4%Added
Farmers National Bank9,329$1.20M0.25%−411−4.2%Reduced
Blodgett Wealth Advisors, LLC9,334$1.20M0.80%+10.0%Added
Ambassador Advisors, LLC9,353$1.20M0.15%−270−2.8%Reduced
Pines Wealth Management, LLC9,388$1.21M0.35%+195+2.1%Added
Optas, LLC9,402$1.21M0.17%−692−6.9%Reduced
Everpar Advisors LLC9,417$1.21M0.34%−123−1.3%Reduced
Ridgewood Investments LLC9,440$1.21M0.45%−1,270−11.9%Reduced
San Luis Wealth Advisors LLC9,440$1.21M0.18%−1,381−12.8%Reduced
Constant Guidance Financial LLC9,440$1.21M0.76%+9,440New
Pettee Investors, Inc.9,465$1.22M0.60%00.0%Unchanged
Pinnacle West Asset Management, Inc.9,470$1.22M0.84%00.0%Unchanged
Intellectus Partners, LLC9,435$1.22M0.21%−194−2.0%Reduced
Cove Private Wealth, LLC9,510$1.22M0.24%+2,545+36.5%Added
Institute for Wealth Management, LLC.9,515$1.22M0.11%−51−0.5%Reduced
Guardian Wealth Advisors, LLC9,528$1.22M0.07%+25+0.3%Added
Fiduciary Family Office, LLC9,551$1.23M0.31%−1,314−12.1%Reduced
Silver Oak Securities, Inc9,556$1.23M0.07%−85−0.9%Reduced
Pinnacle Bancorp, Inc.9,566$1.23M0.32%+2,167+29.3%Added
Alta Advisers Ltd9,584$1.23M0.28%00.0%Unchanged
Taylor Hoffman Capital Management LLC9,585$1.23M0.30%00.0%Unchanged
Great Diamond Partners, LLC9,602$1.23M0.21%+1,126+13.3%Added
Lederer & Associates Investment Counsel9,603$1.23M0.81%+84+0.9%Added
Kidder Stephen W9,608$1.23M0.31%00.0%Unchanged
Acorn Financial Advisory Services Inc9,615$1.24M0.16%−78−0.8%Reduced
Jmac Enterprises LLC9,621$1.24M0.21%+4,802+99.6%Added
Coco Enterprises, LLC9,878$1.24M0.63%−286−2.8%Reduced
Patron Partners Advisors, LLC9,663$1.24M0.48%+7+0.1%Added
Everest Financial Group LLC9,678$1.24M0.17%−797−7.6%Reduced
Calton & Associates, Inc.9,693$1.25M0.18%+2,854+41.7%Added
Connecticut Wealth Management, LLC9,714$1.25M0.05%−62−0.6%Reduced
Intelligence Driven Advisers, LLC9,720$1.25M0.20%−2,235−18.7%Reduced
Chesapeake Capital Corp9,736$1.25M0.68%+764+8.5%Added
Zenith Solutions, Inc.9,739$1.25M1.13%+9,739New
Anchyra Partners LLC9,746$1.25M0.30%+535+5.8%Added
Intrinsic Value Partners, LLC9,767$1.26M0.86%−130−1.3%Reduced
Rossby Financial, LCC9,768$1.26M0.23%+2,413+32.8%Added
Greenwood Capital Associates LLC9,775$1.26M0.12%−217−2.2%Reduced
GW&K Investment Management, LLC9,792$1.26M0.01%−875−8.2%Reduced
Chase Investment Counsel Corp9,815$1.26M0.27%+3,591+57.7%Added
Capital Advisors Inc9,821$1.26M0.02%+46+0.5%Added
Evernest Financial Advisors, LLC9,826$1.26M0.26%−966−9.0%Reduced
Trustco Bank Corp N Y9,841$1.26M0.92%+350+3.7%Added
Continuum Advisory, LLC9,850$1.27M0.10%−31−0.3%Reduced
Lipe & Dalton9,883$1.27M0.59%−145−1.4%Reduced
Mitchell & Pahl Private Wealth, LLC9,886$1.27M0.47%−175−1.7%Reduced
Round Rock Advisors, LLC9,901$1.27M0.16%+66+0.7%Added
Guerra Pan Advisors, LLC9,920$1.27M0.71%−6−0.1%Reduced
DeDora Capital, Inc.9,956$1.28M0.28%−204−2.0%Reduced
MSH Capital Advisors LLC9,998$1.28M0.22%−36−0.4%Reduced
Paul Damon & Associates, Inc.9,999$1.28M0.50%+56+0.6%Added
CV Advisors LLC10,000$1.28M0.24%+10,000New
Ashton Thomas Securities, LLC10,137$1.29M0.19%+1,866+22.6%Added
VisionPoint Advisory Group, LLC10,039$1.29M0.21%+1,220+13.8%Added
Essential Partners LLC10,044$1.29M0.59%−15,868−61.2%Reduced
Graybill Bartz & Assoc Ltd10,047$1.29M0.35%00.0%Unchanged
Smithbridge Asset Management Inc10,048$1.29M0.18%−470−4.5%Reduced
Hickory Point Bank & Trust10,050$1.29M0.78%−25−0.2%Reduced
Defiance ETFs, LLC10,312$1.29M0.02%+2,031+24.5%Added
Prentice Wealth Management LLC10,076$1.29M0.27%−63−0.6%Reduced
Kentucky Trust Co10,078$1.30M0.62%00.0%Unchanged
Relyea Zuckerberg Hanson LLC10,095$1.30M0.11%−249−2.4%Reduced
Lynch Asset Management, Inc.10,100$1.30M0.35%00.0%Unchanged
Alhambra Investment Partners LLC10,112$1.30M0.57%−422−4.0%Reduced
Xxi Wealth, LLC10,121$1.30M0.60%−156−1.5%Reduced