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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
Westbourne Investments, Inc.6,254$803.6K0.33%+101+1.6%Added
Longfellow Investment Management Co LLC6,257$804.0K0.16%00.0%Unchanged
Bangor Savings Bank6,267$805.3K0.06%+670+12.0%Added
Mattern Wealth Management LLC6,274$806.3K0.13%+341+5.7%Added
New Covenant Trust Company, N.A.6,276$806.5K0.61%+241+4.0%Added
Summitry LLC6,279$806.9K0.03%+389+6.6%Added
Traphagen Investment Advisors LLC6,280$807.0K0.06%−335−5.1%Reduced
Clear Wave Wealth Management LLC6,280$807.0K0.18%+815+14.9%Added
Cardinal Point Capital Management, ULC6,290$808.3K0.05%00.0%Unchanged
MFA Wealth Services6,305$810.1K0.48%−22−0.3%Reduced
Aspen Investment Management Inc6,310$811.0K0.22%+11+0.2%Added
Legacy Trust6,318$811.9K0.14%+15+0.2%Added
First Western Trust Bank6,333$813.8K0.04%−248−3.8%Reduced
Sigma Investment Counselors Inc6,333$813.8K0.04%+1,425+29.0%Added
Brucke Financial, Inc.6,337$814.3K0.36%+662+11.7%Added
Allied Investment Advisors, LLC6,342$814.9K0.10%−45−0.7%Reduced
Nelson, Van Denburg & Campbell Wealth Management Group, LLC6,362$817.5K0.02%+615+10.7%Added
Acorn Wealth Advisors, LLC6,368$818.3K0.20%+281+4.6%Added
Garrett Wealth Advisory Group, LLC6,382$820.1K0.13%+17+0.3%Added
Certified Advisory Corp6,383$820.2K0.07%+96+1.5%Added
Synergy Financial Management, LLC6,385$820.5K0.08%+1,776+38.5%Added
Aft, Forsyth & Company, Inc.6,394$821.6K0.40%−780−10.9%Reduced
Boyar Asset Management Inc.6,406$823.2K0.47%−4,632−42.0%Reduced
Axiom Investment Management LLC6,417$824.6K0.55%−800−11.1%Reduced
Core Wealth Partners LLC6,447$828.5K0.35%+20.0%Added
Range Advisory, LLC6,452$829.1K0.10%+1,539+31.3%Added
Asset One Wealth Management LLC6,710$829.4K0.09%−117−1.7%Reduced
First National Bank of Mount Dora, Trust Investment Services6,460$830.1K0.17%−180−2.7%Reduced
one8zero8, LLC6,460$830.1K0.16%00.0%Unchanged
Semus Wealth Partners LLC6,461$830.3K0.40%−45−0.7%Reduced
Park Place Capital Corp6,461$830.8K0.13%−474−6.8%Reduced
OneAscent Family Office, LLC6,470$831.5K0.42%+2,288+54.7%Added
Compass Wealth Management LLC6,487$833.6K0.16%+6,487New
Fielder Capital Group LLC6,488$833.8K0.18%+1,219+23.1%Added
Tiemann Investment Advisors, LLC6,492$834.2K0.30%00.0%Unchanged
Hamilton Capital, LLC6,524$838.4K0.04%+136+2.1%Added
Chancellor Financial Group WB LP6,526$838.7K0.52%+607+10.3%Added
Cowa, LLC6,531$839.2K0.21%−554−7.8%Reduced
Arista Wealth Management, LLC6,551$841.8K0.09%−55−0.8%Reduced
Hills Bank & Trust Co6,571$844.4K0.04%+1,078+19.6%Added
First Command Advisory Services, Inc.6,568$845.3K0.01%−4,705−41.7%Reduced
Curtis Advisory Group, LLC6,600$848.1K0.16%00.0%Unchanged
Wealth Preservation Advisors, LLC6,613$849.8K0.48%−55−0.8%Reduced
BIP Wealth, LLC6,615$850.1K0.02%+1,486+29.0%Added
Allegiance Financial Group Advisory Services LLC6,578$850.9K0.15%−232−3.4%Reduced
Trueblood Wealth Management, LLC6,626$851.5K0.30%+35+0.5%Added
Granite Investment Partners, LLC6,632$852.2K0.04%00.0%Unchanged
Farmers & Merchants Trust Co of Long Beach6,661$855.9K0.18%+10+0.2%Added
Strategic Investment Advisors6,694$860.2K0.05%−394−5.6%Reduced
Cox Capital Mgt LLC6,698$860.7K0.48%−57−0.8%Reduced
Phillips Wealth Planners LLC6,685$861.4K0.63%+1,487+28.6%Added
West Paces Advisors Inc.6,717$863.1K0.14%−860−11.4%Reduced
Onefund, LLC6,727$864.4K0.49%−96−1.4%Reduced
Balboa Wealth Partners6,729$864.6K0.12%−218−3.1%Reduced
BCS Private Wealth Management, Inc.6,712$868.2K0.26%+25+0.4%Added
TFR Capital, LLC.6,757$868.3K0.24%+309+4.8%Added
Monticello Wealth Management, LLC6,764$869.2K0.05%+45+0.7%Added
Carl P. Sherr & Co., LLC6,777$870.9K0.36%−20−0.3%Reduced
SHP Wealth Management6,781$871.4K0.06%+501+8.0%Added
C2P Capital Advisory Group, LLC d.b.a. Prosperity Capital Advisors6,782$871.5K0.04%+145+2.2%Added
Intrua Financial, LLC6,787$872.1K0.08%−1,914−22.0%Reduced
Golden State Wealth Management, LLC6,790$872.6K0.08%+65+1.0%Added
Quantum Financial Advisors, LLC6,793$872.9K0.09%+158+2.4%Added
Eldridge Investment Advisors, Inc.6,799$873.7K0.17%+6+0.1%Added
Agate Pass Investment Management, LLC6,800$873.8K0.32%00.0%Unchanged
LifePlan Financial, LLC6,815$875.7K0.61%−224−3.2%Reduced
Crews Bank & Trust6,824$876.9K0.11%−297−4.2%Reduced
Davidson Trust Co6,832$877.9K0.34%+115+1.7%Added
Hemenway Trust Co LLC6,860$881.5K0.06%−20−0.3%Reduced
KPP Advisory Services LLC6,862$881.7K0.11%−985−12.6%Reduced
Maloon Powers Pitre Higgins & Dennehy, LLC6,865$882.2K0.30%+6,865New
Investment Management Corp6,872$883.1K0.74%+123+1.8%Added
Pictet North America Advisors SA6,875$883.4K0.08%00.0%Unchanged
Riversedge Advisors, LLC6,880$884.1K0.12%+355+5.4%Added
Planned Solutions, Inc.6,896$886.1K0.25%+170+2.5%Added
Pioneer Trust Bank N A6,899$886.5K0.20%−604−8.1%Reduced
Retirement Planning Group6,911$888.1K0.02%−328−4.5%Reduced
Hudson Valley Investment Advisors Inc6,926$889.9K0.11%−1,199−14.8%Reduced
Embree Financial Group6,928$890.2K0.09%+43+0.6%Added
Peoples Bank6,930$890.5K0.46%+89+1.3%Added
Arrow Financial Corp6,932$890.8K0.08%−33−0.5%Reduced
Asset Management Group, Inc.6,960$894.3K0.13%+45+0.7%Added
JT Stratford LLC6,964$894.8K0.10%−71−1.0%Reduced
Baron Silver Stevens Financial Advisors, LLC6,964$894.9K0.11%+193+2.9%Added
LBMC Investment Advisors, LLC6,967$895.3K0.05%−2,032−22.6%Reduced
Impact Partnership Wealth, LLC6,993$898.7K0.09%+2,415+52.8%Added
Colonial Trust Co6,995$898.8K0.11%−2,025−22.5%Reduced
Ridgecrest Wealth Partners, LLC7,002$899.8K0.43%+164+2.4%Added
TCFG Investment Advisors, LLC7,004$900.0K0.30%+102+1.5%Added
Burns J W & Co Inc7,012$901.0K0.09%−187−2.6%Reduced
Bedel Financial Consulting, Inc.7,015$901.4K0.09%+86+1.2%Added
Hardy Reed LLC7,034$903.9K0.06%+656+10.3%Added
Beacon Financial Group7,047$905.6K0.08%+678+10.6%Added
Centennial Bank7,051$906.1K0.29%+122+1.8%Added
Duncan Williams Asset Management, LLC7,052$906.2K0.20%00.0%Unchanged
Cetera Trust Company, N.A7,054$906.4K0.45%00.0%Unchanged
Knightsbridge Asset Management, LLC7,055$906.5K0.12%−408−5.5%Reduced
Ethos Financial Group, LLC6,957$906.9K0.06%−1,187−14.6%Reduced
Townsend & Associates, Inc7,314$909.9K0.08%00.0%Unchanged
Greenwich Wealth Management LLC7,081$910.0K0.03%−840−10.6%Reduced