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

Institutional holders
3,855
+96 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
214
1,635 more added
Sold out
118
1,508 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: 2,961 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 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 20263,812$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, 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
Virtus Family Office LLC7,473$966.6K0.76%−433−5.5%Reduced
Lesa Sroufe & Co30,189$964.0K0.69%+21,122+233.0%Added
Perkins Capital Management Inc7,500$963.8K0.76%−250−3.2%Reduced
Red Wave Investments LLC7,500$963.8K0.24%+24+0.3%Added
Tempus Wealth Planning, LLC7,491$962.6K0.19%+554+8.0%Added
Roehl & Yi Investment Advisors, LLC7,486$961.9K0.32%+2,523+50.8%Added
ProVise Management Group, LLC7,483$961.6K0.06%−335−4.3%Reduced
Mizuho Markets Cayman LP7,473$960.3K0.04%+7,473New
Investment Advisory Services Inc7,465$959.3K0.28%+84+1.1%Added
Sweeney & Michel, LLC7,447$957.5K0.25%−242−3.1%Reduced
Kaufman Rossin Wealth, LLC7,655$957.4K0.45%+149+2.0%Added
Cim Investment Mangement Inc7,447$956.9K0.23%−693−8.5%Reduced
TRB Wealth Management, LLC7,434$955.3K0.13%−1,499−16.8%Reduced
Financial Harvest, LLC7,429$954.6K0.39%+271+3.8%Added
Sunbeam Capital Management, LLC7,398$950.7K0.43%+67+0.9%Added
Cross Staff Investments Inc7,397$950.5K0.57%00.0%Unchanged
Sapient Capital LLC7,327$947.7K0.01%−9,075−55.3%Reduced
Magnus Financial Group LLC7,351$944.5K0.07%−25−0.3%Reduced
Barlow Wealth Partners, Inc.7,490$943.7K0.10%00.0%Unchanged
SOA Wealth Advisors, LLC.7,342$943.4K0.16%+296+4.2%Added
Yoffe Investment Management, LLC7,341$943.3K1.08%00.0%Unchanged
Resurgent Financial Advisors LLC7,331$942.0K0.26%+1,878+34.4%Added
G&S Capital LLC7,326$941.5K0.27%−10.0%Reduced
Old North State Trust, LLC7,326$941.0K0.48%−1,137−13.4%Reduced
Appleton Partners Inc7,307$939.0K0.06%+939+14.7%Added
Summit Asset Management, LLC7,305$938.7K0.12%+864+13.4%Added
Systematic Financial Management LP7,300$938.0K0.02%00.0%Unchanged
Auto-Owners Insurance Co7,300$938.0K0.02%00.0%Unchanged
May Hill Capital, LLC7,298$937.8K0.20%−10−0.1%Reduced
Regent Peak Wealth Advisors LLC7,297$937.7K0.17%+108+1.5%Added
US Asset Management LLC7,277$935.1K0.71%00.0%Unchanged
Grace & White Inc7,267$933.8K0.15%00.0%Unchanged
Vigilare Wealth Management7,267$933.8K0.29%+5,482+307.1%Added
Autumn Glory Partners, LLC7,251$931.8K0.26%−1,971−21.4%Reduced
Port Capital LLC7,247$931.2K0.04%−261−3.5%Reduced
Signature Estate & Investment Advisors LLC7,229$929.3K0.02%+600+9.1%Added
Bath Savings Trust Co7,227$928.7K0.10%+1,494+26.1%Added
Ignite Planners, LLC7,223$928.5K0.13%+368+5.4%Added
Sendero Wealth Management, LLC7,221$927.9K0.09%+2,380+49.2%Added
Concentric Capital Strategies, LP7,217$927.4K0.06%+3,725+106.7%Added
M.E. Allison & Co., Inc.7,203$925.6K0.53%+59+0.8%Added
Wrapmanager Inc7,185$923.3K0.29%−68−0.9%Reduced
Signature Wealth Management Partners, LLC7,180$922.6K0.43%+10.0%Added
Affinity Investment Advisors, LLC7,172$921.6K0.47%+27+0.4%Added
Simplify Asset Management Inc.7,167$921.0K0.01%+623+9.5%Added
Cercano Management LLC7,156$919.5K0.12%00.0%Unchanged
Avantra Family Wealth, Inc.7,156$919.5K0.59%+1,633+29.6%Added
RFG - Bristol Wealth Advisors, LLC7,151$918.9K0.22%+135+1.9%Added
Resolute Wealth Strategies, LLC7,143$917.8K0.36%+69+1.0%Added
First Fiduciary Investment Counsel, Inc.7,118$915.0K0.17%+900+14.5%Added
Beacon Financial Advisory LLC7,120$914.9K0.18%+489+7.4%Added
TrueWealth Advisors, LLC7,109$913.5K0.21%+525+8.0%Added
Bingham Private Wealth, LLC7,105$913.2K0.63%+1,114+18.6%Added
Thayer Partners, LLC7,103$912.8K0.38%−21−0.3%Reduced
Greenwich Wealth Management LLC7,081$910.0K0.03%−840−10.6%Reduced
Townsend & Associates, Inc7,314$909.9K0.08%00.0%Unchanged
Ethos Financial Group, LLC6,957$906.9K0.06%−1,187−14.6%Reduced
Knightsbridge Asset Management, LLC7,055$906.5K0.12%−408−5.5%Reduced
Cetera Trust Company, N.A7,054$906.4K0.45%00.0%Unchanged
Duncan Williams Asset Management, LLC7,052$906.2K0.20%00.0%Unchanged
Centennial Bank7,051$906.1K0.29%+122+1.8%Added
Beacon Financial Group7,047$905.6K0.08%+678+10.6%Added
Hardy Reed LLC7,034$903.9K0.06%+656+10.3%Added
Bedel Financial Consulting, Inc.7,015$901.4K0.09%+86+1.2%Added
Burns J W & Co Inc7,012$901.0K0.09%−187−2.6%Reduced
TCFG Investment Advisors, LLC7,004$900.0K0.30%+102+1.5%Added
Ridgecrest Wealth Partners, LLC7,002$899.8K0.43%+164+2.4%Added
Colonial Trust Co6,995$898.8K0.11%−2,025−22.5%Reduced
Impact Partnership Wealth, LLC6,993$898.7K0.09%+2,415+52.8%Added
LBMC Investment Advisors, LLC6,967$895.3K0.05%−2,032−22.6%Reduced
Baron Silver Stevens Financial Advisors, LLC6,964$894.9K0.11%+193+2.9%Added
JT Stratford LLC6,964$894.8K0.10%−71−1.0%Reduced
Asset Management Group, Inc.6,960$894.3K0.13%+45+0.7%Added
Arrow Financial Corp6,932$890.8K0.08%−33−0.5%Reduced
Peoples Bank6,930$890.5K0.46%+89+1.3%Added
Embree Financial Group6,928$890.2K0.09%+43+0.6%Added
Hudson Valley Investment Advisors Inc6,926$889.9K0.11%−1,199−14.8%Reduced
Retirement Planning Group6,911$888.1K0.02%−328−4.5%Reduced
Pioneer Trust Bank N A6,899$886.5K0.20%−604−8.1%Reduced
Planned Solutions, Inc.6,896$886.1K0.25%+170+2.5%Added
Riversedge Advisors, LLC6,880$884.1K0.12%+355+5.4%Added
Pictet North America Advisors SA6,875$883.4K0.08%00.0%Unchanged
Investment Management Corp6,872$883.1K0.74%+123+1.8%Added
Maloon Powers Pitre Higgins & Dennehy, LLC6,865$882.2K0.30%+6,865New
KPP Advisory Services LLC6,862$881.7K0.11%−985−12.6%Reduced
Hemenway Trust Co LLC6,860$881.5K0.06%−20−0.3%Reduced
Davidson Trust Co6,832$877.9K0.34%+115+1.7%Added
Crews Bank & Trust6,824$876.9K0.11%−297−4.2%Reduced
LifePlan Financial, LLC6,815$875.7K0.61%−224−3.2%Reduced
Agate Pass Investment Management, LLC6,800$873.8K0.32%00.0%Unchanged
Eldridge Investment Advisors, Inc.6,799$873.7K0.17%+6+0.1%Added
Quantum Financial Advisors, LLC6,793$872.9K0.09%+158+2.4%Added
Golden State Wealth Management, LLC6,790$872.6K0.08%+65+1.0%Added
Intrua Financial, LLC6,787$872.1K0.08%−1,914−22.0%Reduced
C2P Capital Advisory Group, LLC d.b.a. Prosperity Capital Advisors6,782$871.5K0.04%+145+2.2%Added
SHP Wealth Management6,781$871.4K0.06%+501+8.0%Added
Carl P. Sherr & Co., LLC6,777$870.9K0.36%−20−0.3%Reduced
Monticello Wealth Management, LLC6,764$869.2K0.05%+45+0.7%Added
TFR Capital, LLC.6,757$868.3K0.24%+309+4.8%Added
BCS Private Wealth Management, Inc.6,712$868.2K0.26%+25+0.4%Added