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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
Canton Hathaway, LLC5,898$757.9K0.15%00.0%Unchanged
Shum Financial Group, Inc.5,889$756.8K0.46%−64−1.1%Reduced
HCR Wealth Advisors5,887$756.5K0.07%+1,278+27.7%Added
Roxbury Financial LLC5,883$755.9K0.60%−45−0.8%Reduced
Mirador Capital Partners LP5,882$755.8K0.09%00.0%Unchanged
Victory Financial Group, LLC5,874$754.8K0.08%+100+1.7%Added
Intesa Sanpaolo Wealth Management5,872$754.6K0.15%+5,384+1,103.3%Added
First Heartland Consultants, Inc.5,871$754.4K0.05%+32+0.5%Added
Weatherly Asset Management L. P.5,839$754.4K0.05%−115−1.9%Reduced
Maseco LLP5,873$754.1K0.02%−141−2.3%Reduced
Lathrop Investment Management Corp5,866$754.0K0.13%00.0%Unchanged
Traub Capital Management LLC5,859$752.9K0.67%−255−4.2%Reduced
Curat Global, LLC4,752$751.7K0.64%−2,265−32.3%Reduced
Providence First Trust Co5,849$751.7K0.21%+1,370+30.6%Added
Gallagher Fiduciary Advisors, LLC5,849$751.6K0.02%−107−1.8%Reduced
Banyan Capital Management, Inc.5,841$750.6K0.33%−308−5.0%Reduced
Vicus Capital5,836$750.0K0.05%+704+13.7%Added
Holistic Planning, LLC5,834$749.7K0.12%+218+3.9%Added
Beta Wealth Group, Inc.5,822$748.2K0.28%+202+3.6%Added
Ponta Wealth Partners, LLC5,816$747.4K0.40%+369+6.8%Added
Lionshead Wealth Management, LLC5,754$744.3K0.48%+44+0.8%Added
Summit Wealth Group LLC5,779$742.6K0.06%−556−8.8%Reduced
Terry L. Blaker5,770$741.4K0.03%00.0%Unchanged
Retirement Income Solutions, Inc6,163$741.3K0.13%+243+4.1%Added
Asset Advisory Group, Inc.5,765$740.8K0.32%00.0%Unchanged
Verum Partners LLC5,758$739.9K0.11%+1,469+34.3%Added
Atticus Wealth Management, LLC5,756$739.6K0.18%+56+1.0%Added
Demars Financial Group, LLC5,754$739.4K0.20%+10.0%Added
EJMK Ventures LLC5,720$737.8K0.33%+454+8.6%Added
Trifecta Capital Advisors, LLC5,740$737.6K0.10%+17+0.3%Added
Madson Wealth Advisors Inc5,730$736.4K0.50%+584+11.3%Added
Townsend Asset Management Corp5,722$735.3K0.24%−7−0.1%Reduced
Argonautica Private Wealth Management, Inc5,715$734.4K0.18%+9+0.2%Added
Hodges Capital Management Inc.5,714$734.3K0.05%−8,148−58.8%Reduced
Alteri Wealth LLC5,712$734.0K0.20%+252+4.6%Added
Lazari Capital Management, Inc.5,710$733.8K0.23%+44+0.8%Added
American Alpha Advisors, LLC5,707$733.4K0.43%+66+1.2%Added
Gerber Kawasaki Wealth & Investment Management5,696$732.0K0.02%+32+0.6%Added
Ariadne Wealth Management, LP5,696$731.9K0.32%−862−13.1%Reduced
Ifrah Financial Services, Inc.5,695$731.8K0.18%+10.0%Added
Rosenberg Matthew Hamilton5,672$728.9K0.14%+542+10.6%Added
Revolve Wealth Partners, LLC5,669$728.5K0.08%+336+6.3%Added
SeaBridge Investment Advisors LLC5,655$726.7K0.11%+375+7.1%Added
Pring Turner Capital Group Inc5,659$726.5K0.42%−826−12.7%Reduced
Delta Investment Management, LLC5,643$725.2K0.12%00.0%Unchanged
Hill Investment Group Partners, LLC5,614$721.4K0.07%+84+1.5%Added
Shayne & Co., LLC5,611$721.0K0.21%00.0%Unchanged
Beverly Hills Private Wealth, LLC5,600$719.6K0.14%−8,299−59.7%Reduced
Foundation Wealth Management, LLC5,596$719.1K0.22%−131−2.3%Reduced
Phoenix Wealth Advisors5,594$718.8K0.24%−39−0.7%Reduced
Tobam5,587$718.0K0.17%−7,176−56.2%Reduced
Good Steward Wealth Advisors,LLC5,575$716.4K0.43%−3−0.1%Reduced
Second Line Capital, LLC5,534$715.8K0.13%−340−5.8%Reduced
Penobscot Wealth Management5,566$715.2K0.19%+158+2.9%Added
Invenio Wealth Partners LLC5,564$715.0K0.26%−68−1.2%Reduced
PCG Asset Management, LLC5,507$712.3K0.51%−80−1.4%Reduced
waypoint wealth counsel5,527$710.2K0.45%−4,369−44.1%Reduced
Michael B. Yongue5,522$709.6K0.49%00.0%Unchanged
First Growth Capital LLC5,520$709.3K0.54%−111−2.0%Reduced
Third View Private Wealth, LLC5,509$707.9K0.09%−537−8.9%Reduced
First National Bank5,509$707.9K0.28%+225+4.3%Added
Midland Wealth Advisors LLC5,509$707.9K0.03%+306+5.9%Added
Seeds Investor LLC5,502$707.0K0.07%+602+12.3%Added
Crescent Sterling, Ltd.5,497$706.4K0.63%−22−0.4%Reduced
JNBA Financial Advisors5,494$706.0K0.05%+53+1.0%Added
RFP Financial Group LLC5,494$706.0K0.32%−1,486−21.3%Reduced
Financial Planning Hawaii, Inc.5,491$705.6K0.38%−640−10.4%Reduced
Braeburn Wealth Management LLC5,487$705.0K0.30%+441+8.7%Added
Gemmer Asset Management LLC5,485$704.8K0.05%−23−0.4%Reduced
Western Financial Corp5,469$702.8K0.21%−15−0.3%Reduced
GTS Securities LLC5,462$701.9K0.01%−3,843−41.3%Reduced
Foster Group, Inc.5,458$701.3K0.02%+409+8.1%Added
Woodward Financial Advisors, Inc.5,455$701.0K0.23%00.0%Unchanged
Dempze Nancy E5,455$701.0K0.34%00.0%Unchanged
Eagle Bay Advisors LLC5,407$699.3K0.52%−367−6.4%Reduced
Sather Financial Group Inc5,433$698.1K0.04%+538+11.0%Added
Trail Ridge Investment Advisors, LLC5,426$697.3K0.29%−67−1.2%Reduced
O'Rourke & Company, Inc5,424$697.0K0.24%+9+0.2%Added
Barrett & Company, Inc.5,411$695.3K0.19%+715+15.2%Added
Leigh Baldwin & Co., LLC5,407$694.7K0.37%−157−2.8%Reduced
Wagner Wealth Management, LLC5,406$694.7K0.13%−485−8.2%Reduced
Centiva Capital, LP5,405$694.5K0.02%+2,397+79.7%Added
Sender Co & Partners, Inc.5,404$694.4K0.29%+5,404New
HHM Wealth Advisors, LLC5,402$694.2K0.07%−24−0.4%Reduced
Beto Financial Group, LLC5,575$693.5K0.36%+28+0.5%Added
Stokes Capital Advisors, LLC5,373$690.4K0.15%+1,275+31.1%Added
Congress Asset Management Co5,371$690.2K0.00%00.0%Unchanged
Summa Corp.5,360$688.8K0.22%00.0%Unchanged
Perennial Investment Advisors, LLC5,358$688.6K0.05%+22+0.4%Added
Womack Financial LLC5,358$688.5K0.46%+182+3.5%Added
Stonebrook Private Inc.5,341$686.4K0.13%+550+11.5%Added
Rahlfs Capital, LLC5,325$684.3K0.50%00.0%Unchanged
Hummer Financial Advisory Services Inc5,289$684.1K0.45%00.0%Unchanged
Good Harbor Advisors, Inc.5,318$683.4K0.67%+3,620+213.2%Added
Zevin Asset Management LLC5,318$683.4K0.10%00.0%Unchanged
Strathmore Capital Advisors, Inc.5,400$681.8K0.18%−113−2.0%Reduced
Easterly Investment Partners LLC5,300$681.0K0.03%00.0%Unchanged
Steadtrust LLC5,299$680.9K0.34%+20.0%Added
Rialto Wealth Management, LLC5,295$680.4K0.13%+70+1.3%Added
Stenger Family Office, LLC5,282$678.7K0.11%+286+5.7%Added