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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
Cypress Capital Advisors, LLC8,433$1.08M0.45%−535−6.0%Reduced
Total Wealth Planning & Management, Inc.8,427$1.08M0.79%−407−4.6%Reduced
Magnolia Capital Management Ltd8,417$1.08M0.75%−2,779−24.8%Reduced
Aurdan Capital Management, LLC8,418$1.08M0.27%−1,510−15.2%Reduced
Northern Financial Advisors Inc8,398$1.08M0.71%+143+1.7%Added
YHB Investment Advisors, Inc.8,398$1.08M0.07%−50−0.6%Reduced
Roman Butler Fullerton & Co8,695$1.08M0.26%+244+2.9%Added
Jessup Wealth Management, Inc8,375$1.08M0.32%−54,569−86.7%Reduced
Berger Financial Group, Inc8,364$1.07M0.05%−63−0.7%Reduced
Strategic Advisors LLC8,362$1.07M0.24%+30.0%Added
Obermeyer Wood Investment Counsel, LLLP8,359$1.07M0.04%−251−2.9%Reduced
Annis Gardner Whiting Capital Advisors, LLC8,338$1.07M0.16%+205+2.5%Added
Northcape Wealth Management, LLC8,353$1.07M0.28%−208−2.4%Reduced
SGL Investment Advisors, Inc.8,197$1.07M0.37%+251+3.2%Added
T. Rowe Price Investment Management, Inc.8,336$1.07M0.00%+66+0.8%Added
Edentree Asset Management Ltd8,340$1.07M0.33%−45,000−84.4%Reduced
Wakefield Asset Management LLLP8,331$1.07M0.24%00.0%Unchanged
Sym Financial Corp8,324$1.07M0.09%−12−0.1%Reduced
Wealth Alliance Advisory Group, LLC8,319$1.07M0.15%+29+0.3%Added
Commonwealth Financial Services, LLC8,315$1.07M0.14%+782+10.4%Added
Sara-Bay Financial8,311$1.07M0.28%−321−3.7%Reduced
Capstone Financial Advisors, Inc.8,309$1.07M0.05%+65+0.8%Added
West Branch Capital LLC8,301$1.07M0.25%+869+11.7%Added
Main Street Research LLC8,298$1.07M0.05%−1,223−12.8%Reduced
Brindle & Bay Financial Advisors, LLC8,294$1.07M0.53%+1,205+17.0%Added
Generation Capital Management LLC8,294$1.07M0.65%−177−2.1%Reduced
Plan Group Financial, LLC8,264$1.06M0.22%−1,139−12.1%Reduced
Charles Schwab Trust Co8,250$1.06M0.06%+330+4.2%Added
Hartford Funds Management Co LLC8,223$1.06M0.08%−81−1.0%Reduced
AssuredPartners Investment Advisors, LLC8,218$1.06M0.10%−510−5.8%Reduced
Channel Wealth LLC8,207$1.05M0.24%−146−1.7%Reduced
InvesTrust8,198$1.05M0.41%−113−1.4%Reduced
Armstrong, Fleming & Moore, Inc8,188$1.05M0.35%00.0%Unchanged
Trust Co8,184$1.05M0.09%−2,631−24.3%Reduced
Sittner & Nelson, LLC8,165$1.05M0.33%+18+0.2%Added
Barton Investment Management8,158$1.05M0.14%00.0%Unchanged
Elevatus Welath Management8,152$1.05M0.25%+4,246+108.7%Added
Cary Street Partner Investment Advisory LLC8,104$1.04M0.21%+1,120+16.0%Added
PKS Advisory Services, LLC8,103$1.04M0.17%+1,450+21.8%Added
Polymer Capital Management (HK) LTD8,100$1.04M0.11%−34,470−81.0%Reduced
Wilkinson Global Asset Management LLC8,090$1.04M0.08%00.0%Unchanged
Cooper Financial Group8,089$1.04M0.09%−429−5.0%Reduced
Amussen Hunsaker Associates LLC8,077$1.04M0.10%+7+0.1%Added
CFM Wealth Partners LLC8,071$1.04M0.13%00.0%Unchanged
McRae Capital Management Inc8,069$1.04M0.20%−200−2.4%Reduced
Basecamp Wealth Advisors LLC8,064$1.04M0.19%−138−1.7%Reduced
SBI Okasan Asset Management Co.Ltd.8,000$1.04M0.03%00.0%Unchanged
Mendel Money Management8,050$1.03M0.38%−746−8.5%Reduced
Beaumont Asset Management, L.L.C.8,037$1.03M0.40%−53−0.7%Reduced
Renaissance Investment Group LLC8,037$1.03M0.20%+204+2.6%Added
Madison Wealth Partners, Inc8,024$1.03M0.13%+6,006+297.6%Added
LOM Asset Management Ltd8,021$1.03M0.27%+1,386+20.9%Added
Cornell Pochily Investment Advisors, Inc.8,019$1.03M0.28%+10.0%Added
Winthrop Advisory Group LLC7,931$1.03M0.07%+480+6.4%Added
Acumen Wealth Advisors, LLC7,919$1.02M0.22%−19,307−70.9%Reduced
Professional Advisory Services Inc7,972$1.02M0.12%00.0%Unchanged
Builder Investment Group Inc7,967$1.02M0.20%+6+0.1%Added
King Wealth7,948$1.02M0.11%+53+0.7%Added
Northwest Wealth Management, LLC7,944$1.02M0.13%−9−0.1%Reduced
Rexford Capital Inc7,926$1.02M0.62%+24+0.3%Added
Orion Capital Management LLC7,922$1.02M0.32%+16+0.2%Added
Elyxium Wealth, LLC7,919$1.02M0.11%+2,829+55.6%Added
Staley Capital Advisers Inc7,910$1.02M0.04%−135−1.7%Reduced
Orca Wealth Management, LLC7,878$1.01M0.61%−68−0.9%Reduced
Benchmark Financial Wealth Advisors, LLC7,860$1.01M0.25%−500−6.0%Reduced
Greenspring Advisors, LLC7,857$1.01M0.06%−8−0.1%Reduced
Ames National Corp7,854$1.01M0.56%00.0%Unchanged
Cambridge Advisors Inc.7,852$1.01M0.17%+56+0.7%Added
Bogart Wealth, LLC7,849$1.01M0.03%+565+7.8%Added
Karani Asset Management LLC7,836$1.01M0.73%00.0%Unchanged
Focused Wealth Management, Inc7,826$1.01M0.09%+626+8.7%Added
Verus Capital Partners, LLC7,818$1.00M0.05%−560−6.7%Reduced
Washington Trust Advisors, Inc.7,790$1.00M0.07%−1,116−12.5%Reduced
Abel Hall, LLC7,789$1.00M0.17%−8,120−51.0%Reduced
Capital Advantage, Inc.7,767$998.0K0.12%−406−5.0%Reduced
Prepared Retirement Institute LLC7,753$996.3K0.42%+8+0.1%Added
Talon Private Wealth, LLC7,741$994.7K0.12%+7,741New
Willner & Heller, LLC7,737$994.2K0.62%+103+1.3%Added
Old Port Advisors7,724$992.5K0.20%+667+9.5%Added
Fort Point Capital Partners LLC7,670$992.1K0.11%+762+11.0%Added
Edgewood Management LLC7,718$991.8K0.01%00.0%Unchanged
Ellenbecker Investment Group7,714$991.4K0.12%+200+2.7%Added
17 Capital Partners, LLC7,704$990.0K0.45%00.0%Unchanged
Octavia Wealth Advisors, LLC7,648$989.3K0.09%−286−3.6%Reduced
F/M Investments LLC7,674$986.1K0.05%+1,252+19.5%Added
Mosaic Financial Group, LLC7,641$982.0K0.63%−73−0.9%Reduced
Sunpointe, LLC7,636$981.2K0.28%−1,374−15.2%Reduced
Cromwell Holdings LLC7,577$980.1K0.44%+95+1.3%Added
Bank of Stockton7,615$978.5K0.27%−97−1.3%Reduced
Financial Consulate, Inc7,599$977.8K0.11%+41+0.5%Added
IFG Advisors, LLC7,609$977.7K0.13%00.0%Unchanged
Athena Investment Management7,598$976.4K0.58%−1,179−13.4%Reduced
Lighthouse Financial Services Inc7,780$975.3K0.20%00.0%Unchanged
Key Client Fiduciary Advisors, LLC7,589$975.1K0.28%+186+2.5%Added
Tevis Investment Management7,534$974.5K0.53%+5+0.1%Added
Meadowbrook Advisors Group, LLC7,576$973.5K0.52%−2,850−27.3%Reduced
Maple Capital Management, Inc.7,566$972.3K0.06%−827−9.9%Reduced
Journey Retirement Planning & Investment Management LLC7,565$972.1K0.76%+835+12.4%Added
Morton Capital Management LLC7,531$967.8K0.13%+598+8.6%Added
Income Insurance Ltd7,530$967.6K0.58%00.0%Unchanged