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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
Inscription Capital, LLC24,480$2.05M0.22%+700+2.9%Added
TD Private Client Wealth LLC24,481$2.05M0.05%−38,683−61.2%Reduced
Kerusso Capital Management LLC24,491$2.06M1.26%−1,409−5.4%Reduced
Evelyn Partners Investment Management LLP24,560$2.06M0.06%+11,360+86.1%Added
Victrix Investment Advisors24,618$2.07M1.13%+2,512+11.4%Added
Cigna Investments Inc24,655$2.07M0.29%−83−0.3%Reduced
Legacy Financial Advisors, Inc.24,672$2.07M0.29%+4,070+19.8%Added
Bulltick Wealth Management, LLC24,546$2.08M0.49%+5,829+31.1%Added
Gsa Capital Partners LLP24,809$2.08M0.17%+12,871+107.8%Added
West Oak Capital, LLC24,857$2.09M0.83%−550−2.2%Reduced
IFG Advisory, LLC24,893$2.09M0.09%−48−0.2%Reduced
Thompson Investment Management, Inc.24,924$2.09M0.28%+6,495+35.2%Added
Centaurus Financial, Inc.24,958$2.10M0.10%+1,371+5.8%Added
Live Oak Investment Partners24,967$2.10M1.39%+1,018+4.3%Added
Redmond Asset Management, LLC25,049$2.10M0.52%−300−1.2%Reduced
Red Spruce Capital, LLC25,094$2.11M0.86%−16,425−39.6%Reduced
Symphony Financial, Ltd. Co.25,956$2.11M0.26%−21,294−45.1%Reduced
Keystone Financial Group24,652$2.12M0.16%−2,449−9.0%Reduced
SeaCrest Wealth Management, LLC24,534$2.12M0.22%−3,168−11.4%Reduced
Sterling Investment Advisors, Ltd.25,278$2.12M0.41%−709−2.7%Reduced
Franklin Street Advisors Inc25,328$2.13M0.12%−4,554−15.2%Reduced
Bank Ozk25,351$2.13M0.75%−1,882−6.9%Reduced
Clarius Group, LLC25,398$2.13M0.13%+2,887+12.8%Added
Latko Wealth Management, Ltd.25,473$2.14M1.08%−1,073−4.0%Reduced
Cypress Capital, LLC25,514$2.14M0.61%−875−3.3%Reduced
Madison Asset Management, LLC25,514$2.14M0.02%−469−1.8%Reduced
ARS Investment Partners, LLC25,519$2.14M0.14%−3,047−10.7%Reduced
Golden State Equity Partners25,566$2.15M0.36%−1,402−5.2%Reduced
Marino, Stram & Associates LLC25,601$2.15M0.39%−2,018−7.3%Reduced
Allen Wealth Management, LLC25,632$2.15M1.46%+2,002+8.5%Added
Wilkinson Global Asset Management LLC25,705$2.16M0.14%−1,880−6.8%Reduced
Chicago Capital, LLC25,709$2.16M0.05%+423+1.7%Added
Sargent Investment Group, LLC25,818$2.17M0.31%+2,280+9.7%Added
Tobam25,843$2.17M0.79%−22,884−47.0%Reduced
CFC Planning Co LLC25,880$2.17M1.83%+1,539+6.3%Added
Court Place Advisors, LLC25,917$2.18M0.65%−1,341−4.9%Reduced
International Assets Investment Management, LLC26,602$2.18M0.18%−46−0.2%Reduced
AIMZ Investment Advisors, LLC25,930$2.18M0.68%−403−1.5%Reduced
American National Bank25,980$2.18M0.21%−1,207−4.4%Reduced
Silvant Capital Management LLC26,005$2.18M0.08%−1,169−4.3%Reduced
LMG Wealth Partners, LLC26,013$2.18M0.41%+550+2.2%Added
Aries Wealth Management26,034$2.19M0.52%−150−0.6%Reduced
Humankind Investments LLC26,067$2.19M0.50%−1,604−5.8%Reduced
Harbor Advisory Corp26,300$2.21M0.65%−50.0%Reduced
Howard Capital Management Inc.26,403$2.22M0.03%+1,712+6.9%Added
Davis R M Inc26,404$2.22M0.04%−12,850−32.7%Reduced
Charter Research & Investment Group, Inc.26,427$2.22M1.54%−7,375−21.8%Reduced
Parcion Private Wealth LLC26,610$2.23M0.14%+4,613+21.0%Added
Ashford Capital Management Inc26,683$2.24M0.25%+8,321+45.3%Added
Journey Advisory Group, LLC26,694$2.24M0.17%−1,141−4.1%Reduced
iA Global Asset Management Inc.26,713$2.24M0.03%−93,345−77.7%Reduced
Moody National Bank Trust Division26,768$2.25M0.19%−2,448−8.4%Reduced
Ritholtz Wealth Management26,906$2.26M0.04%+410+1.5%Added
Trust Co26,913$2.26M0.23%+1,151+4.5%Added
Grimes & Company, Inc.26,919$2.26M0.06%+2,727+11.3%Added
William B. Walkup & Associates, Inc.27,053$2.27M1.22%+62+0.2%Added
TownSquare Capital, LLC27,064$2.27M0.34%−124,069−82.1%Reduced
Key Financial Inc25,227$2.27M0.42%+791+3.2%Added
Wolverine Asset Management LLC27,121$2.28M0.03%−14,068−34.2%Reduced
Camden Capital, LLC27,171$2.28M0.16%+8,746+47.5%Added
Altfest L J & Co Inc27,237$2.29M0.26%+5,815+27.1%Added
Matrix Trust Co27,294$2.29M0.36%+9,885+56.8%Added
Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors27,300$2.29M0.27%−1,726−5.9%Reduced
Montecito Bank & Trust27,329$2.29M0.36%+27,329New
Harbour Investments, Inc.27,387$2.30M0.05%+10,442+61.6%Added
Mission Wealth Management, LP27,459$2.30M0.05%−2,872−9.5%Reduced
Pathway Financial Advisers, LLC27,639$2.31M0.67%+3,388+14.0%Added
Evoke Wealth, LLC27,405$2.32M0.05%+1,609+6.2%Added
Windward Capital Management Co27,669$2.32M0.19%−110.0%Reduced
Valmark Advisers, Inc.27,672$2.32M0.03%+1,002+3.8%Added
Univest Financial Corp27,683$2.32M0.13%−18,610−40.2%Reduced
Alliance Wealth Advisors, LLC27,745$2.33M0.55%+122+0.4%Added
Castle Rock Wealth Management, LLC26,325$2.33M0.52%+1,200+4.8%Added
Tower Research Capital LLC (TRC)27,935$2.34M0.06%−98,107−77.8%Reduced
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management28,104$2.36M0.05%−1,390−4.7%Reduced
Journey Strategic Wealth LLC28,118$2.36M0.07%+5,972+27.0%Added
First Financial Bank - Trust Division28,165$2.36M0.20%−246−0.9%Reduced
Essex LLC28,170$2.36M0.43%−2,808−9.1%Reduced
Glass Wealth Management Co LLC28,349$2.38M1.06%−435−1.5%Reduced
Capital Investment Advisory Services, LLC28,415$2.38M0.19%−275−1.0%Reduced
Horizon Kinetics Asset Management LLC28,617$2.40M0.03%−7,218−20.1%Reduced
Independent Financial Group, LLC28,624$2.40M0.06%+817+2.9%Added
Optimist Retirement Group LLC28,637$2.40M1.09%+28,637New
Sage Mountain Advisors LLC28,640$2.40M0.14%+2,782+10.8%Added
Pettyjohn, Wood & White, Inc28,652$2.40M0.40%−372−1.3%Reduced
Chiron Capital Management, LLC28,728$2.41M2.06%−923−3.1%Reduced
Heritage Wealth Management, Inc.28,751$2.41M0.71%+3,332+13.1%Added
Financial Advisors Network, Inc.28,774$2.42M0.34%+710+2.5%Added
Werlinich Asset Management, LLC28,835$2.42M1.20%+50+0.2%Added
Coastal Bridge Advisors, LLC28,890$2.42M0.18%+970+3.5%Added
Kingswood Wealth Advisors, LLC28,897$2.43M0.15%+5,262+22.3%Added
Shoker Investment Counsel, Inc.28,968$2.43M0.72%+285+1.0%Added
Pensionfund Sabic29,000$2.43M0.66%00.0%Unchanged
Dark Forest Capital Management LP29,010$2.43M0.09%−17,337−37.4%Reduced
Bailard, Inc.29,044$2.44M0.05%−30,041−50.8%Reduced
Addison Capital Co29,206$2.44M0.72%−931−3.1%Reduced
Trust Asset Management LLC29,141$2.45M0.17%00.0%Unchanged
Ellis Investment Partners, LLC29,171$2.45M0.44%+740+2.6%Added
Hudock, Inc.29,200$2.45M0.37%−453−1.5%Reduced
Community Financial Services Group, LLC29,201$2.45M0.45%+1,661+6.0%Added