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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

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
1,509 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: 3,618 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 20243,502$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
Olistico Wealth, LLC3,473$446.3K0.19%−138−3.8%Reduced
Somerset Group LLC3,613$446.4K0.31%00.0%Unchanged
Paragon Financial Partners, Inc.3,439$447.8K0.24%+356+11.5%Added
Kelman-Lazarov, Inc.3,490$448.4K0.06%−52−1.5%Reduced
Ironwood Investment Management LLC3,494$449.0K0.16%00.0%Unchanged
South Shore Capital Advisors3,498$449.5K0.30%+90+2.6%Added
Jupiter Asset Management Ltd3,500$449.8K0.00%+454+14.9%Added
Schrum Private Wealth Management LLC3,603$450.1K0.46%+441+13.9%Added
Liberty Square Wealth Partners LLC3,508$450.8K0.11%00.0%Unchanged
Adkins Seale Capital Management LLC3,509$450.9K0.40%00.0%Unchanged
Willow Creek Capital Management, Inc.3,511$451.2K0.44%+3,511New
Security National Bank of Sioux City Iowa3,514$451.5K0.19%+225+6.8%Added
Alexander Labrunerie & Co., Inc.3,530$453.6K0.16%+14+0.4%Added
OneAscent Investment Solutions LLC3,533$454.0K0.43%−405−10.3%Reduced
Paragon Private Wealth Management, LLC3,545$455.5K0.12%+2+0.1%Added
Mayfair Advisory Group, LLC3,477$455.8K0.14%−490−12.4%Reduced
Arq Wealth Advisors, LLC3,579$456.2K0.06%+130+3.8%Added
Pension & Wealth Management Advisors, Inc.3,551$456.4K0.12%+70+2.0%Added
InTrack Investment Management Inc3,557$457.1K0.23%00.0%Unchanged
D.B. Root & Company, LLC3,564$457.9K0.10%−13−0.4%Reduced
Oxbow Advisors, LLC3,575$459.4K0.04%+292+8.9%Added
Wall Street Financial Group, Inc.3,580$460.0K0.25%−156−4.2%Reduced
Berkeley, Inc3,583$460.4K0.14%00.0%Unchanged
Verity & Verity, LLC3,587$460.9K0.03%−378−9.5%Reduced
Westshore Wealth, LLC3,592$461.5K0.14%+101+2.9%Added
Harvest Fund Management Co., Ltd3,600$462.0K0.02%−4,108−53.3%Reduced
Powers Advisory Group, LLC3,599$462.5K0.14%−32−0.9%Reduced
Tradition Wealth Management, LLC3,604$463.1K0.03%+481+15.4%Added
Wilkins Miller Wealth Management, LLC3,604$463.2K0.25%+22+0.6%Added
WMG Financial Advisors, LLC3,605$463.3K0.17%−198−5.2%Reduced
Owen LaRue, LLC3,615$464.5K0.16%+3,615New
Lansing Street Advisors3,594$464.9K0.10%−498−12.2%Reduced
Wellspring Financial Advisors, LLC22,465$465.4K0.03%+45+0.2%Added
Adamsbrown Wealth Consultants LLC3,627$466.1K0.09%+12+0.3%Added
BDFS Capital LLC3,608$466.7K0.20%00.0%Unchanged
Targeted Financial Services LLC3,634$467.0K0.34%+392+12.1%Added
St. Nicholas Private Asset Management, Inc3,644$468.3K0.41%−140−3.7%Reduced
Polymer Capital Management (US) LLC3,646$468.5K0.07%+1,110+43.8%Added
Syntegra Private Wealth Group, LLC3,649$468.9K0.04%−171−4.5%Reduced
First National Advisers, LLC3,651$469.2K0.07%+675+22.7%Added
Thurston, Springer, Miller, Herd & Titak, Inc.3,656$470.0K0.17%+1,194+48.5%Added
Peck Wealth Management, LLC3,659$470.2K0.40%00.0%Unchanged
Arkfeld Wealth Strategies, L.L.C.3,716$471.1K0.14%−33−0.9%Reduced
Ballew Advisors, Inc3,636$471.1K0.24%00.0%Unchanged
Fidelity D & D Bancorp Inc3,669$471.5K0.16%−142−3.7%Reduced
Bell Bank3,672$471.9K0.02%+552+17.7%Added
Dakota Community Bank & Trust NA3,685$473.5K1.47%−147−3.8%Reduced
Bouchey Financial Group Ltd3,672$474.9K0.03%+442+13.7%Added
Tranquility Partners, LLC3,703$475.8K0.16%−216−5.5%Reduced
Dimension Capital Management LLC3,704$476.0K0.06%00.0%Unchanged
Aspen Grove Capital, LLC3,683$476.4K0.07%−82−2.2%Reduced
Fund Advisors of America Inc3,708$476.5K0.43%−74−2.0%Reduced
Renasant Bank3,712$477.0K0.31%−39−1.0%Reduced
Cortland Associates Inc3,711$477.0K0.07%+15+0.4%Added
Schubert & Co3,712$477.0K0.33%−404−9.8%Reduced
Gentry Private Wealth, LLC3,719$477.9K0.25%−173−4.4%Reduced
Gradient Investments LLC3,723$478.4K0.01%−48−1.3%Reduced
Perennial Advisors, LLC3,724$478.5K0.07%−550−12.9%Reduced
JTC Employer Solutions Trusteee Ltd3,729$479.0K0.04%00.0%Unchanged
CacheTech Inc.3,732$479.6K0.08%+2,039+120.4%Added
Black Diamond Financial, LLC3,735$479.9K0.04%−172−4.4%Reduced
Nexus Investment Management ULC3,735$479.9K0.06%00.0%Unchanged
Paces Ferry Wealth Advisors, LLC3,748$481.6K0.18%−231−5.8%Reduced
Purkiss Capital Advisors LLC3,751$482.0K0.18%+363+10.7%Added
Sculati Wealth Management, LLC3,783$482.3K0.16%00.0%Unchanged
Odyssey Group, LLC3,755$482.5K0.13%+3,755New
Silvia McColl Wealth Management, LLC3,756$482.7K0.29%00.0%Unchanged
Sepio Capital, LP3,766$483.9K0.02%−9,100−70.7%Reduced
Redwood Financial Network Corp3,769$484.4K0.27%+2+0.1%Added
Orographic Financial Advisors, LLC3,657$486.0K0.32%00.0%Unchanged
Safeguard Investment Advisory Group, LLC3,789$487.0K0.11%+1,465+63.0%Added
American Institute for Advanced Investment Management, LLP3,795$487.7K0.28%00.0%Unchanged
Peoples Bank3,795$487.7K0.47%00.0%Unchanged
Beacon Financial Strategies CORP3,796$487.8K0.24%+2+0.1%Added
Providence Financial Advisors, LLC3,797$487.9K0.28%−197−4.9%Reduced
Greatmark Investment Partners, Inc.3,806$489.1K0.05%00.0%Unchanged
Financial Management Professionals, Inc.3,783$489.4K0.05%+49+1.3%Added
Morey & Quinn Wealth Partners, LLC3,811$489.7K0.31%00.0%Unchanged
Per Stirling Capital Management, LLC.3,821$491.0K0.05%+52+1.4%Added
Princeton Global Asset Management LLC3,825$491.6K0.07%−627−14.1%Reduced
New World Advisors LLC3,835$492.8K0.08%+43+1.1%Added
Consolidated Planning Corp3,842$493.7K0.07%−174−4.3%Reduced
Chemistry Wealth Management LLC3,843$493.8K0.08%−480−11.1%Reduced
Legacy Wealth Advisors, LLC3,848$494.5K0.21%+1,405+57.5%Added
BlackDiamond Wealth Management Inc.3,785$495.6K0.20%+233+6.6%Added
Vista Investment Partners LLC3,858$495.8K0.13%+7+0.2%Added
Bravera Wealth3,860$496.0K0.19%−241−5.9%Reduced
American Trust3,865$496.7K0.04%−110−2.8%Reduced
Eads & Heald Wealth Management3,872$497.6K0.24%−141−3.5%Reduced
Select Asset Management & Trust3,876$498.0K0.14%−2,000−34.0%Reduced
Verus Financial Partners, Inc.3,877$498.2K0.04%+7+0.2%Added
Wealth Advisory Solutions, LLC3,882$498.8K0.10%−313−7.5%Reduced
One Charles Private Wealth Services, LLC3,893$500.2K0.12%+12+0.3%Added
Hoese & Co LLP3,894$500.4K0.33%+692+21.6%Added
Dale Q Rice Investment Management Ltd3,904$501.7K0.27%−63−1.6%Reduced
Oak Asset Management, LLC3,906$501.9K0.16%−19−0.5%Reduced
Baron Wealth Management LLC3,920$503.7K0.13%−362−8.5%Reduced
McLean Asset Management Corp3,870$503.9K0.07%−89−2.2%Reduced
Meridian Investment Counsel Inc.3,923$504.1K0.11%+130+3.4%Added
Values Added Financial LLC3,925$504.4K0.18%+323+9.0%Added