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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
Sound Income Strategies, LLC4,917$631.9K0.03%+172+3.6%Added
Palumbo Wealth Management LLC4,918$631.9K0.13%+58+1.2%Added
ABLE Financial Group, LLC4,923$632.6K0.11%00.0%Unchanged
MKT Advisors LLC4,919$633.8K0.20%00.0%Unchanged
Financial Solutions Advisory Group, Inc.5,069$633.9K0.08%00.0%Unchanged
Redwood Investment Management, LLC4,933$634.0K0.06%+37+0.8%Added
BOS Asset Management, LLC4,935$634.1K0.15%00.0%Unchanged
Accretive Wealth Partners, LLC4,954$636.6K0.15%+20.0%Added
Financial Enhancement Group LLC4,955$636.7K0.08%+101+2.1%Added
Founders Grove Wealth Partners, LLC4,961$637.5K0.13%+652+15.1%Added
S.A. Mason LLC4,968$638.3K0.20%+8+0.2%Added
Novak & Powell Financial Services, Inc.4,975$639.3K0.30%+15+0.3%Added
NFP Retirement, Inc.4,976$639.4K0.04%−131−2.6%Reduced
Element Wealth, LLC4,981$640.0K0.24%+4+0.1%Added
Ullmann Financial Group, Inc.4,982$640.1K0.06%+222+4.7%Added
Laurel Wealth Advisors LLC4,984$640.4K0.06%00.0%Unchanged
CrossGen Wealth, LLC4,992$641.5K0.50%−512−9.3%Reduced
Cora Capital Advisors LLC4,994$641.7K0.18%+24+0.5%Added
Indiana Trust & Investment Management CO4,996$642.0K0.18%00.0%Unchanged
Pavaki Capital Management LLC5,000$642.5K0.37%00.0%Unchanged
Westmount Partners, LLC5,013$644.1K0.14%+123+2.5%Added
Fortis Capital Advisors, LLC5,018$644.8K0.07%+1,350+36.8%Added
Snowwater Investment Partners, LLC4,988$645.1K0.45%+54+1.1%Added
Floyd Financial Group LLC5,359$647.3K0.42%−17−0.3%Reduced
Salvus Wealth Management, LLC5,037$647.3K0.36%+500+11.0%Added
Golden Reserve Retirement LLC5,044$648.2K0.10%+2,410+91.5%Added
Successful Portfolios LLC5,204$648.2K0.30%−10.0%Reduced
Green Ridge Wealth Planning LLC5,048$648.7K0.27%−322−6.0%Reduced
Lake Street Financial LLC5,051$649.1K0.07%−33−0.6%Reduced
Summit Financial Strategies, Inc.5,052$649.2K0.05%−1,005−16.6%Reduced
Congress Park Capital LLC5,060$650.2K0.18%00.0%Unchanged
Blake Schutter Theil Wealth Advisors, LLC5,065$650.9K0.44%00.0%Unchanged
Presilium Private Wealth, LLC5,084$653.3K0.10%+1,710+50.7%Added
Investment Partners, Ltd.5,098$655.0K0.20%+121+2.4%Added
McLaughlin Asset Management, Inc.5,110$656.9K0.45%+7+0.1%Added
Beacon Investment Advisors LLC5,120$658.0K0.21%−10.0%Reduced
MOR Wealth Management, LLC5,136$660.0K0.26%+5,136New
Topsail Wealth Management, LLC5,112$661.2K0.08%+11+0.2%Added
Worthington Financial Partners, LLC5,149$661.6K0.55%−267−4.9%Reduced
Clark Wealth Partners5,121$662.4K0.37%−168−3.2%Reduced
Royal Palms Capital LLC5,158$662.8K0.58%+28+0.5%Added
Arcataur Capital Management LLC5,177$665.2K0.16%+87+1.7%Added
Arsenal Capital Advisors LLC5,179$665.5K0.39%+15+0.3%Added
Ironwood Financial, llc5,395$669.2K0.10%00.0%Unchanged
Werba Rubin Papier Wealth Management5,214$670.0K0.08%+97+1.9%Added
Atlas Capital Advisors LLC5,216$670.3K0.07%−1,581−23.3%Reduced
Galvin, Gaustad & Stein, LLC5,221$670.9K0.05%+35+0.7%Added
Cohen Investment Advisors LLC5,231$672.2K0.30%−490−8.6%Reduced
Vantus Wealth LLC5,250$674.6K0.36%+5,250New
Simon Quick Advisors, LLC5,250$674.7K0.03%+304+6.1%Added
Carr Financial Group Corp5,252$674.9K0.16%+62+1.2%Added
Rasp Wealth Solutions, LLC5,259$675.8K0.22%+5,259New
Mendel Capital Management LLC5,263$676.3K0.30%+29+0.6%Added
Maxele Advisors, LLC5,271$677.4K0.47%+5,271New
Stenger Family Office, LLC5,282$678.7K0.11%+286+5.7%Added
Rialto Wealth Management, LLC5,295$680.4K0.13%+70+1.3%Added
Steadtrust LLC5,299$680.9K0.34%+20.0%Added
Easterly Investment Partners LLC5,300$681.0K0.03%00.0%Unchanged
Strathmore Capital Advisors, Inc.5,400$681.8K0.18%−113−2.0%Reduced
Zevin Asset Management LLC5,318$683.4K0.10%00.0%Unchanged
Good Harbor Advisors, Inc.5,318$683.4K0.67%+3,620+213.2%Added
Hummer Financial Advisory Services Inc5,289$684.1K0.45%00.0%Unchanged
Rahlfs Capital, LLC5,325$684.3K0.50%00.0%Unchanged
Stonebrook Private Inc.5,341$686.4K0.13%+550+11.5%Added
Womack Financial LLC5,358$688.5K0.46%+182+3.5%Added
Perennial Investment Advisors, LLC5,358$688.6K0.05%+22+0.4%Added
Summa Corp.5,360$688.8K0.22%00.0%Unchanged
Congress Asset Management Co5,371$690.2K0.00%00.0%Unchanged
Stokes Capital Advisors, LLC5,373$690.4K0.15%+1,275+31.1%Added
Beto Financial Group, LLC5,575$693.5K0.36%+28+0.5%Added
HHM Wealth Advisors, LLC5,402$694.2K0.07%−24−0.4%Reduced
Sender Co & Partners, Inc.5,404$694.4K0.29%+5,404New
Centiva Capital, LP5,405$694.5K0.02%+2,397+79.7%Added
Wagner Wealth Management, LLC5,406$694.7K0.13%−485−8.2%Reduced
Leigh Baldwin & Co., LLC5,407$694.7K0.37%−157−2.8%Reduced
Barrett & Company, Inc.5,411$695.3K0.19%+715+15.2%Added
O'Rourke & Company, Inc5,424$697.0K0.24%+9+0.2%Added
Trail Ridge Investment Advisors, LLC5,426$697.3K0.29%−67−1.2%Reduced
Sather Financial Group Inc5,433$698.1K0.04%+538+11.0%Added
Eagle Bay Advisors LLC5,407$699.3K0.52%−367−6.4%Reduced
Dempze Nancy E5,455$701.0K0.34%00.0%Unchanged
Woodward Financial Advisors, Inc.5,455$701.0K0.23%00.0%Unchanged
Foster Group, Inc.5,458$701.3K0.02%+409+8.1%Added
GTS Securities LLC5,462$701.9K0.01%−3,843−41.3%Reduced
Western Financial Corp5,469$702.8K0.21%−15−0.3%Reduced
Gemmer Asset Management LLC5,485$704.8K0.05%−23−0.4%Reduced
Braeburn Wealth Management LLC5,487$705.0K0.30%+441+8.7%Added
Financial Planning Hawaii, Inc.5,491$705.6K0.38%−640−10.4%Reduced
RFP Financial Group LLC5,494$706.0K0.32%−1,486−21.3%Reduced
JNBA Financial Advisors5,494$706.0K0.05%+53+1.0%Added
Crescent Sterling, Ltd.5,497$706.4K0.63%−22−0.4%Reduced
Seeds Investor LLC5,502$707.0K0.07%+602+12.3%Added
Midland Wealth Advisors LLC5,509$707.9K0.03%+306+5.9%Added
Third View Private Wealth, LLC5,509$707.9K0.09%−537−8.9%Reduced
First National Bank5,509$707.9K0.28%+225+4.3%Added
First Growth Capital LLC5,520$709.3K0.54%−111−2.0%Reduced
Michael B. Yongue5,522$709.6K0.49%00.0%Unchanged
waypoint wealth counsel5,527$710.2K0.45%−4,369−44.1%Reduced
PCG Asset Management, LLC5,507$712.3K0.51%−80−1.4%Reduced
Invenio Wealth Partners LLC5,564$715.0K0.26%−68−1.2%Reduced