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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: 11 institutions have reported holding MRK so far. See Q3 2026

Institutional holders
3,855
+95 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
213
1,635 more added
Sold out
118
1,509 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
Eagle Rock Investment Company, LLC29,913$3.84M0.48%−90−0.3%Reduced
Cordatus Wealth Management LLC29,906$3.84M0.84%−166−0.6%Reduced
China Universal Asset Management Co., Ltd.29,663$3.83M0.23%+22,595+319.7%Added
A. D. Beadell Investment Counsel, Inc.29,714$3.82M2.44%−299−1.0%Reduced
Diversify Wealth Management, LLC29,135$3.81M0.06%+2,558+9.6%Added
Diversify Advisory Services, LLC29,135$3.81M0.06%+29,135New
Rehmann Capital Advisory Group29,611$3.81M0.17%+453+1.6%Added
Broadwater Capital Management LLC29,582$3.80M2.76%−250−0.8%Reduced
Walter & Keenan Financial Consulting Co29,479$3.79M0.94%+54+0.2%Added
Prevail Innovative Wealth Advisors, LLC29,458$3.79M0.56%+9,145+45.0%Added
Central Bank & Trust Co29,437$3.78M0.54%+186+0.6%Added
National Asset Management, Inc.29,226$3.78M0.21%−1,838−5.9%Reduced
Syon Capital LLC29,362$3.77M0.16%+3,692+14.4%Added
VCI Wealth Management LLC29,344$3.77M0.95%+809+2.8%Added
Chilton Capital Management LLC29,329$3.77M0.12%+95+0.3%Added
E Fund Management Co., Ltd.29,310$3.77M0.08%+897+3.2%Added
Gould Capital, LLC29,265$3.76M2.10%+229+0.8%Added
Peak Retirement Planning, Inc.29,248$3.76M0.60%+7,649+35.4%Added
Glass Wealth Management Co LLC29,119$3.74M1.25%+465+1.6%Added
Ameritas Advisory Services, LLC29,071$3.74M0.08%+9,540+48.8%Added
Intrust Bank NA28,996$3.73M0.28%+632+2.2%Added
Turtle Creek Wealth Advisors, LLC28,968$3.72M0.20%+2,215+8.3%Added
Legacy Financial Advisors, Inc.28,939$3.72M0.45%+828+2.9%Added
Dearborn Partners LLC28,921$3.72M0.21%−6,122−17.5%Reduced
Independent Solutions Wealth Management, LLC28,910$3.71M0.48%−138−0.5%Reduced
Werlinich Asset Management, LLC28,835$3.71M1.42%00.0%Unchanged
Wealth Enhancement Trust Services, Inc.28,812$3.70M0.41%−5,906−17.0%Reduced
Kovack Advisors, Inc.29,013$3.70M0.18%−8,754−23.2%Reduced
Cassaday & Co Wealth Management LLC28,760$3.70M0.07%−292−1.0%Reduced
Harvey Investment Co LLC28,754$3.69M0.40%−500−1.7%Reduced
Newman Dignan & Sheerar, Inc.28,738$3.69M0.71%−64−0.2%Reduced
Global Trust Asset Management, LLC28,730$3.69M1.15%+3,153+12.3%Added
J.P. Marvel Investment Advisors, LLC28,670$3.68M0.42%00.0%Unchanged
Community Financial Services Group, LLC29,385$3.68M0.54%−128−0.4%Reduced
Beese Fulmer Investment Management, Inc.28,659$3.68M0.21%−1,455−4.8%Reduced
Heritage Wealth Management, Inc.28,609$3.68M0.92%−30−0.1%Reduced
CMH Wealth Management LLC28,358$3.67M0.56%+537+1.9%Added
Addison Capital Co28,505$3.66M0.60%−1,241−4.2%Reduced
Prudent Man Advisors, LLC28,446$3.66M0.84%+3,198+12.7%Added
Keebeck Wealth Management, LLC28,212$3.65M0.36%−2,869−9.2%Reduced
Accurate Wealth Management, LLC29,492$3.64M0.35%+2,553+9.5%Added
Essex Savings Bank28,245$3.63M0.78%−36−0.1%Reduced
Town & Country Bank & Trust CO dba First Bankers Trust CO28,243$3.63M1.13%−920−3.2%Reduced
Malaga Cove Capital, LLC28,235$3.63M1.16%−456−1.6%Reduced
Horizon Kinetics Asset Management LLC28,151$3.62M0.04%−232−0.8%Reduced
BigSur Wealth Management LLC27,960$3.62M0.87%−3,000−9.7%Reduced
Paradigm Capital Management, LLC28,084$3.61M3.10%−2,385−7.8%Reduced
PW Nova Financial Services LLC28,064$3.61M0.77%−317−1.1%Reduced
Cornerstone Planning, LLC28,026$3.60M0.83%+254+0.9%Added
Generali Investments CEE, investicni spolecnost, a.s.27,981$3.60M0.17%−1,644−5.5%Reduced
Means Investment Co., Inc.27,981$3.60M0.27%−43−0.2%Reduced
SNS Financial Group, LLC27,952$3.59M0.07%+17,436+165.8%Added
Nicolet Bankshares Inc28,130$3.59M0.11%+444+1.6%Added
Lynx Capital Group Ltd27,879$3.58M1.45%−75−0.3%Reduced
Sax Wealth Advisors, LLC29,762$3.58M0.15%+2,034+7.3%Added
WESPAC Advisors, LLC27,798$3.57M1.74%00.0%Unchanged
Harbor Capital Advisors, Inc.27,785$3.57M0.24%−784−2.7%Reduced
Castle Rock Wealth Management, LLC28,419$3.56M0.70%+590+2.1%Added
Employees Retirement System of Texas27,704$3.56M0.03%00.0%Unchanged
Garrett Investment Advisors LLC27,689$3.56M0.26%−654−2.3%Reduced
Trust Asset Management LLC27,624$3.55M0.22%−448−1.6%Reduced
Capital International Sarl27,611$3.55M0.05%+27,611New
Emerald Investment Advisers, LLC27,592$3.55M0.24%+788+2.9%Added
DoubleLine ETF Adviser LP27,527$3.54M1.46%−3,383−10.9%Reduced
Integrated Investment Consultants, LLC27,502$3.53M0.70%−49−0.2%Reduced
Wright Investors Service Inc27,422$3.52M0.96%−506−1.8%Reduced
Archford Capital Strategies, LLC27,354$3.52M0.36%−6,991−20.4%Reduced
Ssa Swiss Advisors AG27,275$3.51M1.32%−10,750−28.3%Reduced
Stelac Advisory Services LLC27,275$3.51M0.65%−10,750−28.3%Reduced
Waterloo Capital, L.P.27,308$3.51M0.20%+238+0.9%Added
New England Research & Management, Inc.27,279$3.51M1.36%+750+2.8%Added
Essex LLC27,256$3.50M0.53%+617+2.3%Added
Pettyjohn, Wood & White, Inc27,200$3.50M0.51%−395−1.4%Reduced
Wedmont Private Capital28,290$3.49M0.10%+2,429+9.4%Added
Prosperity Consulting Group, LLC27,182$3.49M0.13%+1,550+6.0%Added
Freestone Grove Partners LP27,158$3.49M0.02%+27,158New
Chicago Capital, LLC27,111$3.48M0.08%+55+0.2%Added
HBW Advisory Services LLC27,037$3.47M0.31%+127+0.5%Added
William B. Walkup & Associates, Inc.27,033$3.47M1.67%+316+1.2%Added
TRUE Private Wealth Advisors27,029$3.47M0.30%−1,368−4.8%Reduced
American National Bank26,998$3.47M0.30%00.0%Unchanged
Victrix Investment Advisors26,958$3.46M1.45%+2,244+9.1%Added
Valmark Advisers, Inc.26,899$3.46M0.04%−1,442−5.1%Reduced
Main Street Financial Solutions, LLC26,862$3.45M0.22%+272+1.0%Added
Foundations Investment Advisors, LLC26,833$3.45M0.04%+6,533+32.2%Added
Blue Fin Capital, Inc.26,735$3.44M0.50%+110+0.4%Added
CFS Investment Advisory Services, LLC26,467$3.43M0.23%−130.0%Reduced
Mogy Joel R Investment Counsel Inc26,683$3.43M0.20%00.0%Unchanged
Bailard, Inc.26,669$3.43M0.07%+2,160+8.8%Added
Inscription Capital, LLC26,514$3.41M0.30%+2,164+8.9%Added
EverSource Wealth Advisors, LLC26,464$3.40M0.11%−4,568−14.7%Reduced
Aaron Wealth Advisors26,456$3.40M0.17%−733−2.7%Reduced
Red Spruce Capital, LLC26,440$3.40M1.18%+347+1.3%Added
ZWJ Investment Counsel Inc26,437$3.40M0.11%+306+1.2%Added
Windward Capital Management Co26,382$3.39M0.26%+290+1.1%Added
KMG Fiduciary Partners, LLC26,379$3.39M0.31%−26,888−50.5%Reduced
Patten Group, Inc.26,376$3.39M0.53%−940−3.4%Reduced
Regal Investment Advisors LLC26,367$3.39M0.18%−493−1.8%Reduced
Infrastructure Capital Advisors, LLC26,324$3.38M0.26%+4,347+19.8%Added
Little House Capital LLC26,318$3.38M0.76%+842+3.3%Added