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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
Penobscot Wealth Management5,566$715.2K0.19%+158+2.9%Added
Second Line Capital, LLC5,534$715.8K0.13%−340−5.8%Reduced
Good Steward Wealth Advisors,LLC5,575$716.4K0.43%−3−0.1%Reduced
Tobam5,587$718.0K0.17%−7,176−56.2%Reduced
Phoenix Wealth Advisors5,594$718.8K0.24%−39−0.7%Reduced
Foundation Wealth Management, LLC5,596$719.1K0.22%−131−2.3%Reduced
Beverly Hills Private Wealth, LLC5,600$719.6K0.14%−8,299−59.7%Reduced
Shayne & Co., LLC5,611$721.0K0.21%00.0%Unchanged
Hill Investment Group Partners, LLC5,614$721.4K0.07%+84+1.5%Added
Delta Investment Management, LLC5,643$725.2K0.12%00.0%Unchanged
Pring Turner Capital Group Inc5,659$726.5K0.42%−826−12.7%Reduced
SeaBridge Investment Advisors LLC5,655$726.7K0.11%+375+7.1%Added
Revolve Wealth Partners, LLC5,669$728.5K0.08%+336+6.3%Added
Rosenberg Matthew Hamilton5,672$728.9K0.14%+542+10.6%Added
Ifrah Financial Services, Inc.5,695$731.8K0.18%+10.0%Added
Ariadne Wealth Management, LP5,696$731.9K0.32%−862−13.1%Reduced
Gerber Kawasaki Wealth & Investment Management5,696$732.0K0.02%+32+0.6%Added
American Alpha Advisors, LLC5,707$733.4K0.43%+66+1.2%Added
Lazari Capital Management, Inc.5,710$733.8K0.23%+44+0.8%Added
Alteri Wealth LLC5,712$734.0K0.20%+252+4.6%Added
Hodges Capital Management Inc.5,714$734.3K0.05%−8,148−58.8%Reduced
Argonautica Private Wealth Management, Inc5,715$734.4K0.18%+9+0.2%Added
Townsend Asset Management Corp5,722$735.3K0.24%−7−0.1%Reduced
Madson Wealth Advisors Inc5,730$736.4K0.50%+584+11.3%Added
Trifecta Capital Advisors, LLC5,740$737.6K0.10%+17+0.3%Added
EJMK Ventures LLC5,720$737.8K0.33%+454+8.6%Added
Demars Financial Group, LLC5,754$739.4K0.20%+10.0%Added
Atticus Wealth Management, LLC5,756$739.6K0.18%+56+1.0%Added
Verum Partners LLC5,758$739.9K0.11%+1,469+34.3%Added
Asset Advisory Group, Inc.5,765$740.8K0.32%00.0%Unchanged
Retirement Income Solutions, Inc6,163$741.3K0.13%+243+4.1%Added
Terry L. Blaker5,770$741.4K0.03%00.0%Unchanged
Summit Wealth Group LLC5,779$742.6K0.06%−556−8.8%Reduced
Lionshead Wealth Management, LLC5,754$744.3K0.48%+44+0.8%Added
Ponta Wealth Partners, LLC5,816$747.4K0.40%+369+6.8%Added
Beta Wealth Group, Inc.5,822$748.2K0.28%+202+3.6%Added
Holistic Planning, LLC5,834$749.7K0.12%+218+3.9%Added
Vicus Capital5,836$750.0K0.05%+704+13.7%Added
Banyan Capital Management, Inc.5,841$750.6K0.33%−308−5.0%Reduced
Gallagher Fiduciary Advisors, LLC5,849$751.6K0.02%−107−1.8%Reduced
Providence First Trust Co5,849$751.7K0.21%+1,370+30.6%Added
Curat Global, LLC4,752$751.7K0.64%−2,265−32.3%Reduced
Traub Capital Management LLC5,859$752.9K0.67%−255−4.2%Reduced
Lathrop Investment Management Corp5,866$754.0K0.13%00.0%Unchanged
Maseco LLP5,873$754.1K0.02%−141−2.3%Reduced
Weatherly Asset Management L. P.5,839$754.4K0.05%−115−1.9%Reduced
First Heartland Consultants, Inc.5,871$754.4K0.05%+32+0.5%Added
Intesa Sanpaolo Wealth Management5,872$754.6K0.15%+5,384+1,103.3%Added
Victory Financial Group, LLC5,874$754.8K0.08%+100+1.7%Added
Mirador Capital Partners LP5,882$755.8K0.09%00.0%Unchanged
Roxbury Financial LLC5,883$755.9K0.60%−45−0.8%Reduced
HCR Wealth Advisors5,887$756.5K0.07%+1,278+27.7%Added
Shum Financial Group, Inc.5,889$756.8K0.46%−64−1.1%Reduced
Canton Hathaway, LLC5,898$757.9K0.15%00.0%Unchanged
Stanley-Laman Group, Ltd.5,916$760.2K0.08%00.0%Unchanged
KDT Advisors, LLC5,926$761.5K1.05%00.0%Unchanged
Clark Asset Management, LLC5,931$762.1K0.06%+121+2.1%Added
Garner Asset Management Corp5,936$762.8K0.25%+619+11.6%Added
Revisor Wealth Management LLC5,906$762.9K0.18%+2,587+77.9%Added
Mainsail Asset Management, LLC5,984$763.0K0.30%+2,541+73.8%Added
Granite Harbor Advisors, Inc.5,942$763.5K0.30%+257+4.5%Added
Boltwood Capital Management5,943$763.7K0.17%+100+1.7%Added
denkapparat Operations GmbH5,946$764.1K0.25%−2,098−26.1%Reduced
Cottonwood Capital Advisors, LLC5,954$765.0K0.46%00.0%Unchanged
Ocean Capital Management, LLC5,955$765.3K0.14%−16−0.3%Reduced
Insight 2811, Inc.5,956$765.3K0.31%+219+3.8%Added
Southern Capital Advisors, LLC5,961$766.0K0.32%+8+0.1%Added
Cohen Capital Management, Inc.5,967$766.8K0.10%00.0%Unchanged
Alpha Family Trust5,975$767.8K0.31%00.0%Unchanged
Wingate Wealth Advisors, Inc.5,985$769.0K0.34%−155−2.5%Reduced
Virtue Capital Management, LLC5,985$769.1K0.10%−119−1.9%Reduced
WealthPLAN Partners, LLC6,004$771.5K0.15%+50+0.8%Added
Nadler Financial Group, Inc.6,005$771.7K0.07%+152+2.6%Added
Bigelow Investment Advisors, LLC6,009$772.2K0.28%−194−3.1%Reduced
Focused Alpha, LLC6,009$772.2K0.20%−160−2.6%Reduced
Fiduciary Financial Group, LLC6,015$773.0K0.09%+1,485+32.8%Added
Roberts Glore & Co Inc6,037$775.8K0.19%−22−0.4%Reduced
Greater Midwest Financial Group, LLC6,044$776.6K0.39%+97+1.6%Added
Integrity Advisory Solutions, LLC6,053$777.9K0.08%+4,115+212.3%Added
Lester Murray Antman dba SimplyRich6,059$778.0K0.18%00.0%Unchanged
Swiss Re Ltd6,058$778.5K0.07%+5,521+1,028.1%Added
Steinberganna Wealth Management6,083$781.7K0.32%+43+0.7%Added
Prota Financial, LLC6,253$783.9K0.52%+171+2.8%Added
Sutton Place Investors LLC6,109$785.0K0.38%−6−0.1%Reduced
Destination Wealth Management6,119$786.2K0.02%−68−1.1%Reduced
Innovative Asset Advisors Group, LLC6,088$787.5K0.34%+52+0.9%Added
Alliance Private Wealth, LLC6,141$789.1K0.27%−400−6.1%Reduced
American Capital Advisory, LLC6,146$789.8K0.29%+529+9.4%Added
J2 Capital Management Inc6,147$789.9K0.53%+6,147New
Hazlett, Burt & Watson, Inc.6,130$790.0K0.21%+690+12.7%Added
Lebenthal Global Advisors, LLC6,150$790.3K0.11%−283−4.4%Reduced
Shulman DeMeo Asset Management LLC6,161$791.7K0.15%−88−1.4%Reduced
Stokes Family Office, LLC6,187$795.0K0.09%−18−0.3%Reduced
Gray Private Wealth, LLC6,199$796.6K0.34%−9−0.1%Reduced
Investment Research Partners LLC6,207$797.6K0.27%−54−0.9%Reduced
Bright Futures Wealth Management, LLC.6,220$799.3K0.52%−6,361−50.6%Reduced
Old Second National Bank of Aurora6,222$799.5K0.15%00.0%Unchanged
Aspire Growth Partners LLC6,241$802.0K0.47%−35−0.6%Reduced
St. Clair Advisors, LLC6,248$802.9K0.21%00.0%Unchanged
Northstar Asset Management LLC6,130$803.5K0.15%00.0%Unchanged