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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, Q3 2025

Institutional positions in Merck & Co., Inc. as of Sep 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
3,319
+42 vs. Q2 2025
Shares held
1.90B
−25.7M (−1.3%) vs. Q2 2025
Total value
$159.8B
+$6.99B (+4.6%) vs. Q2 2025
New holders
191
1,361 more added
Sold out
149
1,427 more reduced

60 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2025: 3,319 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 heldQ3 2025: $159.8B
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, Q3 2025

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q2 2025.

Institutions holding MRK in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Diversify Wealth Management, LLC13,731$1.13M0.07%−24,300−63.9%Reduced
Alliance Wealth Advisors, LLC13,537$1.14M0.57%+53+0.4%Added
Colton Groome Financial Advisors, LLC13,554$1.14M0.35%+1,400+11.5%Added
Janney Capital Management LLC13,569$1.14M0.07%−512−3.6%Reduced
Blackstone Group Inc.13,571$1.14M0.00%+13,571New
Chapin Davis, Inc.13,579$1.14M0.28%+2,822+26.2%Added
Harbor Investment Advisory, LLC13,596$1.14M0.09%−2,912−17.6%Reduced
Oak Harbor Wealth Partners, LLC13,655$1.15M0.28%−1,092−7.4%Reduced
United Community Bank13,673$1.15M0.36%+6,994+104.7%Added
Boxwood Ventures, Inc.13,563$1.15M1.28%00.0%Unchanged
Elevated Capital Advisors, LLC13,700$1.15M0.29%+2,822+25.9%Added
Natural Investments, LLC13,703$1.15M0.29%−56−0.4%Reduced
JGP Wealth Management, LLC12,852$1.15M0.13%+1,130+9.6%Added
Winthrop Capital Management, LLC13,709$1.15M0.28%+458+3.5%Added
LRI Investments, LLC13,751$1.15M0.09%+1,043+8.2%Added
Payne Capital Management, LLC13,787$1.16M0.37%+9,682+235.9%Added
Jupiter Wealth Management LLC13,800$1.16M0.55%00.0%Unchanged
Aspiriant, LLC13,810$1.16M0.04%−2,980−17.7%Reduced
Processus Wealth & Capital Management, LLC13,817$1.16M0.83%−22−0.2%Reduced
Ameritas Advisory Services, LLC13,857$1.16M0.08%−15,380−52.6%Reduced
Hedges Asset Management LLC13,900$1.17M0.89%+100+0.7%Added
Apella Capital, LLC13,926$1.17M0.03%+2,579+22.7%Added
Trustmark National Bank Trust Department13,949$1.17M0.08%−10−0.1%Reduced
V. M. Manning & Co., Inc.13,944$1.17M1.07%00.0%Unchanged
Auxano Advisors, LLC13,972$1.17M0.25%+9+0.1%Added
Richwood Investment Advisors, LLC13,994$1.17M0.92%−461−3.2%Reduced
Harbour Capital Advisors, LLC13,433$1.18M0.24%−278−2.0%Reduced
Kanawha Capital Management LLC14,029$1.18M0.08%+150+1.1%Added
Pine Haven Investment Counsel, Inc14,032$1.18M0.85%+15+0.1%Added
Brave Asset Management Inc14,034$1.18M0.29%+669+5.0%Added
WealthPlan Investment Management, LLC14,074$1.18M0.08%+181+1.3%Added
Pinnacle Wealth Planning Services, Inc.14,083$1.18M0.14%−165−1.2%Reduced
Benchmark Investment Advisors LLC13,545$1.18M0.69%+13,545New
Moss Adams Wealth Advisors LLC13,974$1.18M0.09%+816+6.2%Added
Transamerica Financial Advisors, Inc.14,107$1.18M0.10%+10,829+330.4%Added
Bull Street Advisors, LLC14,123$1.19M0.55%00.0%Unchanged
Renasant Bank14,142$1.19M0.75%+3,625+34.5%Added
Baker Avenue Asset Management, LP14,149$1.19M0.03%+2,359+20.0%Added
Capstone Triton Financial Group, LLC14,167$1.19M0.80%+164+1.2%Added
City State Bank14,174$1.19M0.34%00.0%Unchanged
Segment Wealth Management, LLC14,233$1.19M0.07%−865−5.7%Reduced
Icon Wealth Advisors, LLC14,245$1.20M0.08%−22,419−61.1%Reduced
Adell Harriman & Carpenter Inc14,277$1.20M0.07%−3,923−21.6%Reduced
WCG Wealth Advisors LLC14,280$1.20M0.08%−118−0.8%Reduced
First Foundation Advisors14,296$1.20M0.04%+948+7.1%Added
Hendershot Investments Inc.14,302$1.20M0.15%00.0%Unchanged
Peregrine Asset Advisers, Inc.14,315$1.20M0.36%−850−5.6%Reduced
Meridian Financial Partners LLC13,910$1.20M0.50%−395−2.8%Reduced
E&G Advisors, LP14,305$1.20M0.28%−92−0.6%Reduced
Arvest Bank Trust Division14,360$1.21M0.07%+226+1.6%Added
Emerald Advisors, LLC14,473$1.21M0.16%+1,489+11.5%Added
Hexagon Capital Partners LLC14,490$1.22M0.24%+355+2.5%Added
Cherokee Insurance Co14,498$1.22M0.52%00.0%Unchanged
United Advisor Group, LLC14,489$1.22M0.16%+5,827+67.3%Added
Drucker Wealth 3.0, LLC14,515$1.22M0.22%+5,997+70.4%Added
Exchange Bank14,519$1.22M0.85%−272−1.8%Reduced
McGlone Suttner Wealth Management, Inc.14,539$1.22M0.17%+344+2.4%Added
RKL Wealth Management LLC14,551$1.22M0.10%+547+3.9%Added
Keynote Financial Services LLC14,583$1.22M0.74%+283+2.0%Added
Bank & Trust Co14,598$1.23M0.91%00.0%Unchanged
Navalign, LLC14,603$1.23M0.32%+408+2.9%Added
Wisconsin Capital Management LLC14,610$1.23M0.63%−225−1.5%Reduced
Cladis Investment Advisory, LLC14,621$1.23M0.70%+3,650+33.3%Added
Reuter James Wealth Management, LLC14,621$1.23M0.17%−50−0.3%Reduced
Calton & Associates, Inc.14,624$1.23M0.18%+10,279+236.6%Added
Borer Denton & Associates, Inc.14,624$1.23M0.41%−1,000−6.4%Reduced
Hager Investment Management Services, LLC14,640$1.23M0.66%00.0%Unchanged
Chesapeake Wealth Management14,653$1.23M0.38%−386−2.6%Reduced
Keeler Thomas Management LLC14,699$1.23M0.50%+283+2.0%Added
Generali Investments Towarzystwo Funduszy Inwestycyjnych14,800$1.24M0.66%+600+4.2%Added
Mraz, Amerine & Associates, Inc.14,806$1.24M0.19%+11,078+297.2%Added
Cassia Capital Partners, LLC14,810$1.24M0.68%+1,748+13.4%Added
Register Financial Advisors LLC14,819$1.24M0.49%+381+2.6%Added
Park Place Capital Corp14,829$1.24M0.26%+1,514+11.4%Added
Trust Point Inc.14,834$1.25M0.10%+120+0.8%Added
Waldron Private Wealth LLC14,707$1.25M0.05%−165−1.1%Reduced
Acropolis Investment Management, LLC15,793$1.25M0.06%+750+5.0%Added
Insigneo Advisory Services, LLC14,922$1.25M0.09%−3,166−17.5%Reduced
Redhawk Wealth Advisors, Inc.14,975$1.26M0.15%+1,754+13.3%Added
Belpointe Asset Management LLC14,987$1.26M0.05%+1,557+11.6%Added
Grove Bank & Trust14,999$1.26M0.15%−596−3.8%Reduced
Graham Capital Management, L.P.15,011$1.26M0.05%+15,011New
NWF Advisory Services Inc.15,118$1.27M0.14%−1,732−10.3%Reduced
Marathon Trading Investment Management LLC15,121$1.27M0.54%−18,100−54.5%Reduced
Paradigm Financial Partners, LLC15,127$1.27M0.13%−1,181−7.2%Reduced
OneAscent Financial Services LLC15,154$1.27M0.08%+1,183+8.5%Added
Texas Bank & Trust Co15,193$1.28M0.48%+2,841+23.0%Added
Riverbend Wealth Management, LLC15,196$1.28M0.89%+740+5.1%Added
Catalyst Financial Partners LLC15,200$1.28M0.15%+527+3.6%Added
Am Investment Strategies LLC15,200$1.28M0.28%+22+0.1%Added
Osprey Private Wealth LLC15,225$1.28M0.46%+8,900+140.7%Added
Umpqua Bank15,196$1.28M0.36%−115−0.8%Reduced
Turtle Creek Wealth Advisors, LLC15,229$1.28M0.11%−32,584−68.1%Reduced
Huber Capital Management LLC15,293$1.28M0.20%00.0%Unchanged
Sunflower Bank, N.A.15,309$1.28M0.31%+150+1.0%Added
Lantz Financial LLC15,339$1.29M0.28%+1,191+8.4%Added
St. Johns Investment Management Company, LLC15,341$1.29M0.55%−1,354−8.1%Reduced
Quattro Financial Advisors LLC15,350$1.29M0.41%00.0%Unchanged
Ransom Advisory, Ltd15,381$1.29M0.58%−1,442−8.6%Reduced
Evermay Wealth Management LLC15,293$1.29M0.15%−977−6.0%Reduced