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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: 2,962 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: 3,618 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 20243,502$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, 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
Financial Life Planners1$530.00%+1New
Park Square Financial Group, LLC2$840.00%−2,437−99.9%Reduced
New Millennium Group LLC4$3360.00%−445−99.1%Reduced
Hoey Investments, Inc5$4200.00%00.0%Unchanged
Legacy Wealth Managment, LLC6$5040.00%−10−62.5%Reduced
Bridge Generations Wealth Management LLC6$5040.00%00.0%Unchanged
Mma Asset Management LLC12$9990.00%+12New
DecisionPoint Financial, LLC12$1.08K0.00%−1,000−98.8%Reduced
HighMark Wealth Management LLC14$1.21K0.00%−106−88.3%Reduced
Finley Financial, LLC21$1.76K0.00%00.0%Unchanged
HFM Investment Advisors, LLC21$1.76K0.00%00.0%Unchanged
Davis Capital Management21$1.76K0.00%+21New
Ball & Co Wealth Management Inc.31$2.00K0.00%+1+3.3%Added
Family Legacy Financial Solutions, LLC24$2.01K0.00%00.0%Unchanged
C M Bidwell & Associates Ltd24$2.01K0.00%+24New
E Fund Management (Hong Kong) Co., Ltd.27$2.27K0.00%+27New
SIMA Wealth Partners, LLC29$2.43K0.00%+29New
Bay Harbor Wealth Management, LLC34$2.85K0.00%+14+70.0%Added
Clarity Asset Management, Inc.38$3.19K0.00%00.0%Unchanged
Greykasell Wealth Strategies, Inc.40$3.36K0.00%00.0%Unchanged
RMG Wealth Management LLC42$3.67K0.00%00.0%Unchanged
FWL Investment Management, LLC45$3.78K0.00%−17−27.4%Reduced
Eukles Asset Management45$3.78K0.00%00.0%Unchanged
PayPay Securities Corp46$3.89K0.14%−1−2.1%Reduced
ROSS\JOHNSON & Associates LLC48$4.03K0.08%+24+100.0%Added
Graney & King, LLC49$4.10K0.00%+1+2.1%Added
Alexis Investment Partners, LLC50$4.20K0.00%+50New
Bradley & Co. Private Wealth Management, LLC51$4.28K0.00%00.0%Unchanged
Decker Retirement Planning Inc.55$4.62K0.00%−175−76.1%Reduced
Burkett Financial Services, LLC71$5.95K0.00%+1+1.4%Added
Navigoe, LLC81$6.00K0.00%+16+24.6%Added
POM Investment Strategies, LLC73$6.13K0.00%+50+217.4%Added
Mendota Financial Group, LLC87$7.28K0.01%00.0%Unchanged
Evelyn Partners Investment Management (Europe) Ltd87$7.30K0.00%00.0%Unchanged
Morton Brown Family Wealth, LLC100$8.39K0.00%−82−45.1%Reduced
Miller Wealth Advisors, LLC100$8.39K0.00%00.0%Unchanged
CKW Financial Group100$9.00K0.00%00.0%Unchanged
Bear Mountain Capital, Inc.105$9.20K0.00%+5+5.0%Added
WealthCollab, LLC110$9.23K0.00%+14+14.6%Added
Copia Wealth Management111$9.32K0.01%−116−51.1%Reduced
Evelyn Partners Asset Management Ltd118$9.90K0.00%+118New
Keystone Financial Group, Inc.129$11.0K0.01%00.0%Unchanged
Luken Investment Analytics, LLC134$11.2K0.00%00.0%Unchanged
Sagard Holdings Management Inc.134$11.2K0.06%00.0%Unchanged
Proffitt & Goodson Inc138$11.6K0.00%00.0%Unchanged
Financial Avengers, Inc.144$12.1K0.01%+1+0.7%Added
Altshuler Shaham Ltd150$12.6K0.00%+150New
Pension & Wealth Management Advisors, Inc.152$12.8K0.00%−99−39.4%Reduced
Pineridge Advisors LLC156$13.1K0.00%00.0%Unchanged
Robinson Value Management, Ltd.166$13.9K0.01%00.0%Unchanged
Tidemark, LLC175$14.7K0.00%00.0%Unchanged
Financially Speaking Inc176$14.8K0.01%00.0%Unchanged
High Note Wealth, LLC185$15.5K0.00%−9−4.6%Reduced
Cypress Capital Management LLC (WY)185$15.7K0.01%−150−44.8%Reduced
Advantage Trust Co200$16.8K0.01%−350−63.6%Reduced
Knights of Columbus Asset Advisors LLC200$16.8K0.00%00.0%Unchanged
WestEnd Advisors, LLC213$17.9K0.00%−72−25.3%Reduced
Sellwood Investment Partners LLC215$18.0K0.01%+15+7.5%Added
Guerra Advisors Inc217$18.2K0.01%+217New
Redmont Wealth Advisors LLC222$18.6K0.03%−124−35.8%Reduced
Friedenthal Financial223$18.7K0.01%00.0%Unchanged
Imprint Wealth LLC234$19.6K0.06%+234New
Cloud Capital Management, LLC237$20.0K0.01%+237New
TruNorth Capital Management, LLC242$20.3K0.00%+70+40.7%Added
Evolution Wealth Management Inc.245$20.6K0.02%−151−38.1%Reduced
Lowe Wealth Advisors, LLC250$21.0K0.01%−15−5.7%Reduced
Horizon Financial Services, LLC250$21.0K0.01%00.0%Unchanged
Clal Insurance Enterprises Holdings Ltd248$21.0K0.00%−21−7.8%Reduced
Pinney & Scofield, Inc.252$21.1K0.01%00.0%Unchanged
Marquette Asset Management, LLC254$21.3K0.00%+254New
Midwest Capital Advisors, LLC261$21.9K0.01%00.0%Unchanged
Noble Wealth Management PBC261$21.9K0.01%+261New
Western Pacific Wealth Management, LP263$22.1K0.02%00.0%Unchanged
Red Tortoise LLC267$22.4K0.01%00.0%Unchanged
Harbor Asset Planning, Inc.285$23.9K0.02%00.0%Unchanged
Chung Wu Investment Group, LLC300$25.2K0.02%−273−47.6%Reduced
Front Row Advisors LLC297$25.2K0.01%−81−21.4%Reduced
Halbert Hargrove Global Advisors, LLC301$25.3K0.00%−447−59.8%Reduced
Anfield Capital Management, LLC305$25.6K0.01%−16−5.0%Reduced
Darwin Advisors, LLC307$25.8K0.01%+216+237.4%Added
Keener Financial Planning LLC329$27.0K0.01%00.0%Unchanged
Moisand Fitzgerald Tamayo, LLC327$27.4K0.00%−138−29.7%Reduced
Y.D. More Investments Ltd1,819$28.0K0.00%+1,277+235.6%Added
IMG Wealth Management, Inc.342$28.7K0.02%00.0%Unchanged
Horizons Wealth Management344$28.9K0.02%−27−7.3%Reduced
Curio Wealth, LLC345$29.0K0.01%−529−60.5%Reduced
Valued Wealth Advisors LLC350$29.7K0.01%+18+5.4%Added
Barnes Dennig Private Wealth Management LLC354$29.7K0.03%+266+302.3%Added
Contravisory Investment Management, Inc.363$30.5K0.01%−320−46.9%Reduced
Winch Advisory Services, LLC363$30.5K0.01%+1+0.3%Added
Bare Financial Services, Inc368$30.9K0.01%+2+0.5%Added
United Financial Planning Group LLC369$31.0K0.02%+369New
Kilter Group LLC369$31.0K0.01%+27+7.9%Added
Harvest Fund Management Co., Ltd374$31.0K0.00%−17−4.3%Reduced
Provenance Wealth Advisors, LLC370$31.1K0.00%00.0%Unchanged
Spurstone Advisory Services, LLC374$31.4K0.45%−190−33.7%Reduced
JDM Financial Group LLC400$33.6K0.01%00.0%Unchanged
Horizon Bancorp Inc407$34.0K0.02%00.0%Unchanged
Wealth Watch Advisors, INC410$34.4K0.01%+410New
Hurley Capital, LLC414$34.8K0.02%+17+4.3%Added