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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
Deane Retirement Strategies, Inc.415$34.8K0.01%+415New
Stephens Consulting, LLC417$35.0K0.01%−947−69.4%Reduced
Roble, Belko & Company, Inc423$35.0K0.00%−82−16.2%Reduced
Minot DeBlois Advisors LLC418$35.1K0.03%−25−5.6%Reduced
Dunhill Financial, LLC419$35.2K0.01%+190+83.0%Added
Tradewinds Capital Management, LLC421$35.3K0.01%+35+9.1%Added
Silicon Valley Capital Partners422$35.4K0.00%+260+160.5%Added
Accent Capital Management, LLC420$35.6K0.02%00.0%Unchanged
Itau Unibanco Holding S.A.427$35.8K0.00%−4−0.9%Reduced
Mascoma Wealth Management LLC445$37.3K0.01%−148−25.0%Reduced
J.Safra Asset Management Corp450$37.8K0.00%+157+53.6%Added
Fiduciary Advisors, Inc.453$38.0K0.03%00.0%Unchanged
Tower Trust & Investment Co460$38.6K0.03%00.0%Unchanged
Migdal Insurance & Financial Holdings Ltd.465$39.0K0.00%00.0%Unchanged
Seneschal Advisors, LLC497$41.7K0.03%+497New
Arcadia Investment Management Corp500$42.0K0.01%−1,500−75.0%Reduced
Dougherty Wealth Advisers LLC500$42.0K0.03%00.0%Unchanged
Cape Investment Advisory, Inc.501$42.0K0.04%−650−56.5%Reduced
Glass Jacobson Investment Advisors llc501$42.1K0.02%−50−9.1%Reduced
Sofos Investments, Inc.515$43.3K0.01%+515New
Howard Hughes Medical Institute537$45.1K0.03%−9−1.6%Reduced
Toth Financial Advisory Corp539$45.2K0.00%00.0%Unchanged
Marshall & Sterling Wealth Advisors Inc.546$45.7K0.03%+5+0.9%Added
Turning Point Benefit Group, Inc.512$46.1K0.03%+512New
Future Financial Wealth Managment LLC553$46.4K0.03%00.0%Unchanged
CBIZ Investment Advisory Services, LLC549$46.5K0.00%+202+58.2%Added
Mountain Hill Investment Partners Corp.557$46.7K0.04%+10+1.8%Added
SWAN Capital LLC557$46.8K0.02%+106+23.5%Added
Team Financial Group, LLC559$46.9K0.02%+5+0.9%Added
Global Wealth Strategies & Associates559$46.9K0.01%+440+369.7%Added
Accordant Advisory Group Inc563$47.3K0.03%00.0%Unchanged
Insight Financial Services597$50.1K0.03%00.0%Unchanged
Copeland Capital Management, LLC600$50.4K0.00%00.0%Unchanged
Evelyn Partners Investment Management Services Ltd608$51.0K0.01%−150−19.8%Reduced
Beaird Harris Wealth Management, LLC612$51.3K0.00%+11+1.8%Added
MJT & Associates Financial Advisory Group, Inc.616$51.7K0.04%+33+5.7%Added
Main Street Group, LTD639$53.7K0.02%00.0%Unchanged
Wiser Advisor Group LLC655$55.0K0.07%+655New
Gleason Group, Inc.659$55.3K0.01%+23+3.6%Added
Cedar Mountain Advisors, LLC670$56.2K0.01%+646+2,691.7%Added
Retirement Wealth Solutions LLC675$56.6K0.04%−72−9.6%Reduced
Clear Investment Research, LLC676$56.7K0.08%+317+88.3%Added
AXS Investments LLC697$58.5K0.02%+697New
Cherry Tree Wealth Management, LLC697$58.5K0.01%−240−25.6%Reduced
Aspect Partners, LLC703$59.0K0.03%−110−13.5%Reduced
Quest 10 Wealth Builders, Inc.712$59.7K0.06%+73+11.4%Added
Bellevue Asset Management, LLC713$59.9K0.03%+4+0.6%Added
VSM Wealth Advisory, LLC720$60.5K0.02%−798−52.6%Reduced
Mowery & Schoenfeld Wealth Management, LLC724$60.8K0.10%00.0%Unchanged
Battery Global Advisors, LLC718$60.8K0.03%00.0%Unchanged
Atwood & Palmer Inc730$61.3K0.00%00.0%Unchanged
Vermillion & White Wealth Management Group, LLC750$62.9K0.04%+502+202.4%Added
Breakwater Investment Management759$63.7K0.02%−439−36.6%Reduced
Activest Wealth Management769$64.5K0.01%+172+28.8%Added
Scarborough Advisors, LLC770$64.6K0.01%−43−5.3%Reduced
Stuart Chaussee & Associates, Inc.770$64.6K0.01%00.0%Unchanged
LFA - Lugano Financial Advisors SA788$66.1K0.03%−77−8.9%Reduced
Fairman Group, LLC790$66.9K0.05%00.0%Unchanged
State of Wyoming800$67.1K0.01%−7,954−90.9%Reduced
Thurston, Springer, Miller, Herd & Titak, Inc.813$68.2K0.14%−15,268−94.9%Reduced
Holos Integrated Wealth LLC808$69.5K0.04%00.0%Unchanged
Country Trust Bank832$69.8K0.00%−6−0.7%Reduced
1620 Investment Advisors, Inc.842$70.7K0.05%00.0%Unchanged
DiNuzzo Private Wealth, Inc.869$73.1K0.01%−1−0.1%Reduced
Hopwood Financial Services, Inc.876$73.5K0.05%+1+0.1%Added
Principia Wealth Advisory, LLC888$74.6K0.05%+3+0.3%Added
Dynamic Wealth Strategies, LLC898$75.4K0.05%+87+10.7%Added
Richardson Financial Services Inc.948$79.5K0.05%+55+6.2%Added
FSA Wealth Management LLC951$79.8K0.03%−78−7.6%Reduced
Ulland Investment Advisors, LLC957$80.0K0.06%−26−2.6%Reduced
Proathlete Wealth Management LLC956$80.3K0.02%−11−1.1%Reduced
Cornerstone National Bank & Trust Co1,000$83.9K0.03%00.0%Unchanged
American Wealth Advisors, LLC1,013$85.0K0.08%+1,013New
Strategic Advocates LLC1,014$85.1K0.02%+1,014New
Hughes Financial Services, LLC987$85.6K0.01%−15−1.5%Reduced
Ogorek Anthony Joseph1,032$86.0K0.02%+183+21.6%Added
Louisbourg Investments Inc.1,034$86.8K0.02%+677+189.6%Added
IAG Wealth Partners, LLC1,035$86.9K0.01%+6+0.6%Added
Centerpoint Advisors, LLC1,042$87.0K0.03%00.0%Unchanged
Comprehensive Financial Planning, Inc.1,043$87.6K0.06%−11−1.0%Reduced
NVWM, LLC1,087$91.2K0.02%+5+0.5%Added
WPG Advisers, LLC1,108$93.0K0.07%−15−1.3%Reduced
Creative Capital Management Investments LLC1,113$93.4K0.03%−375−25.2%Reduced
West Financial Advisors, LLC1,114$93.5K0.02%−45−3.9%Reduced
ZRC Wealth Management, LLC1,131$94.9K0.03%−159−12.3%Reduced
Essex Investment Management Co LLC1,132$95.0K0.01%00.0%Unchanged
Ritter Daniher Financial Advisory LLC1,163$97.6K0.02%00.0%Unchanged
Stone House Investment Management, LLC1,168$98.0K0.02%+8+0.7%Added
Cedar Wealth Management, LLC1,174$98.5K0.03%−144−10.9%Reduced
Dogwood Wealth Management LLC1,171$99.3K0.05%+161+15.9%Added
Vision Financial Markets LLC1,186$99.5K0.08%00.0%Unchanged
Sarver Vrooman Wealth Advisors1,256$105.4K0.07%00.0%Unchanged
Twin Lakes Capital Management, LLC1,318$110.6K0.05%+105+8.7%Added
Financial Perspectives, Inc1,318$110.6K0.03%00.0%Unchanged
ESL Trust Services, LLC1,319$110.7K0.02%+119+9.9%Added
Granite FO LLC1,320$110.8K0.06%00.0%Unchanged
Creekmur Asset Management LLC1,334$112.0K0.02%+2+0.2%Added
Robinswood Financial LLC1,344$112.9K0.04%+1+0.1%Added
Tower View Investment Management & Research LLC1,358$114.0K0.06%+13+1.0%Added
Financial Network Wealth Advisors LLC1,358$114.0K0.12%+96+7.6%Added