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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
LCNB Corp26,283$3.38M1.04%−889−3.3%Reduced
Wellington Grp LLC26,263$3.37M0.89%−19−0.1%Reduced
Charter Research & Investment Group, Inc.26,258$3.37M2.05%00.0%Unchanged
Burling Wealth Partners, LLC26,244$3.37M0.49%−719−2.7%Reduced
Nilsine Partners, LLC26,144$3.36M0.23%−334−1.3%Reduced
First Financial Bank - Trust Division26,128$3.36M0.24%+47+0.2%Added
Armis Advisers, LLC26,444$3.35M0.31%+329+1.3%Added
Parr McKnight Wealth Management Group, LLC25,951$3.33M0.40%+1,220+4.9%Added
Sargent Investment Group, LLC25,863$3.32M0.40%+264+1.0%Added
Silvant Capital Management LLC25,811$3.32M0.10%00.0%Unchanged
LMG Wealth Partners, LLC25,729$3.31M0.53%+642+2.6%Added
First National Bank & Trust Co of Newtown25,369$3.30M0.67%−809−3.1%Reduced
Meridian Wealth Advisors, LLC25,697$3.30M0.38%−20.0%Reduced
BDF-Gestion42,451$3.29M0.98%−4,773−10.1%Reduced
Mitchell McLeod Pugh & Williams Inc25,603$3.29M0.40%+2,213+9.5%Added
Cornerstone Select Advisors, LLC25,523$3.28M1.38%+2,762+12.1%Added
Aries Wealth Management25,514$3.28M0.64%−18−0.1%Reduced
Sterling Investment Advisors, Ltd.25,499$3.28M0.55%−554−2.1%Reduced
AIMZ Investment Advisors, LLC25,475$3.27M0.90%+151+0.6%Added
McAdam, LLC25,372$3.26M0.13%+1,376+5.7%Added
Beacon Investment Advisory Services, Inc.25,298$3.25M0.12%−1,286−4.8%Reduced
Huber Capital Management LLC25,293$3.25M0.48%00.0%Unchanged
SevenBridge Financial Group, LLC25,263$3.25M0.48%−1,640−6.1%Reduced
SageView Advisory Group, LLC25,250$3.24M0.11%+1,929+8.3%Added
Parkside Financial Bank & Trust25,116$3.23M0.22%−709−2.7%Reduced
Linden Thomas Advisory Services, LLC25,106$3.23M0.26%+582+2.4%Added
Truvestments Capital LLC25,027$3.22M0.48%+811+3.3%Added
Jain Global LLC24,975$3.21M0.04%−20,697−45.3%Reduced
McKinley Carter Wealth Services, Inc.24,973$3.21M0.17%+227+0.9%Added
Curbstone Financial Management Corp24,914$3.20M0.55%+850+3.5%Added
Cypress Capital, LLC24,880$3.20M0.87%−751−2.9%Reduced
Ellis Investment Partners, LLC24,852$3.19M0.48%−250−1.0%Reduced
Stratos Wealth Advisors, LLC24,837$3.19M0.18%+463+1.9%Added
International Assets Investment Management, LLC25,392$3.18M0.19%−1,606−5.9%Reduced
Old Point Trust & Financial Services N A24,771$3.18M0.97%+1,313+5.6%Added
Howe & Rusling Inc24,744$3.18M0.18%+1,035+4.4%Added
P.A.W. Capital Corp24,715$3.18M2.43%−950−3.7%Reduced
Personal Cfo Solutions, LLC24,511$3.17M0.46%+607+2.5%Added
Pekin Hardy Strauss, Inc.24,621$3.16M0.28%−84−0.3%Reduced
Univest Financial Corp24,610$3.16M0.16%−429−1.7%Reduced
Matrix Trust Co24,606$3.16M0.46%−1,458−5.6%Reduced
Argent Advisors, Inc.24,547$3.15M0.79%−211−0.9%Reduced
Thompson Investment Management, Inc.24,470$3.14M0.36%+17+0.1%Added
Fiduciary Group LLC24,429$3.14M0.25%+385+1.6%Added
Marino, Stram & Associates LLC24,413$3.14M0.50%−553−2.2%Reduced
3Chopt Investment Partners, LLC24,198$3.13M0.59%+2,004+9.0%Added
AlTi Global, Inc.24,188$3.13M0.06%+674+2.9%Added
Northstar Group, Inc.24,202$3.11M0.40%−44−0.2%Reduced
Naviter Wealth, LLC24,004$3.10M0.28%+2,375+11.0%Added
Oakmont Investment Advisors, Inc.24,110$3.10M2.15%+101+0.4%Added
Counterweight Ventures, LLC24,081$3.09M1.54%−1,005−4.0%Reduced
Hayek Kallen Investment Management24,059$3.09M0.94%+347+1.5%Added
MCF Advisors LLC23,882$3.08M0.11%−427−1.8%Reduced
CFC Planning Co LLC23,994$3.08M1.82%−1,121−4.5%Reduced
Smith, Moore & Co.23,976$3.08M0.20%−1,997−7.7%Reduced
Capital Asset Advisory Services LLC23,955$3.08M0.11%+1,715+7.7%Added
Cornerstone Wealth Group, LLC23,956$3.08M0.18%+564+2.4%Added
Ausdal Financial Partners, Inc.23,933$3.08M0.12%+2,541+11.9%Added
Harbor Advisory Corp23,912$3.07M0.82%00.0%Unchanged
Nations Financial Group Inc,23,911$3.07M0.15%+478+2.0%Added
WCG Wealth Advisors LLC23,852$3.07M0.07%+144+0.6%Added
Forum Finance Group S.A.29,485$3.06M1.10%+1,705+6.1%Added
Bull Harbor Capital LLC23,810$3.06M0.60%+119+0.5%Added
Madison Asset Management, LLC23,786$3.06M0.04%−105−0.4%Reduced
Bridgewater Advisors Inc.23,905$3.05M0.17%+96+0.4%Added
Ellevest, Inc.23,926$3.05M0.36%+349+1.5%Added
Catalyst Funds Management Pty Ltd23,750$3.05M0.17%+20,134+556.8%Added
Massachusetts Wealth Management23,717$3.05M1.16%+110+0.5%Added
Davis R M Inc23,586$3.05M0.05%−809−3.3%Reduced
Brendel Financial Advisors LLC23,668$3.04M1.41%00.0%Unchanged
Allen Wealth Management, LLC23,602$3.03M1.48%−1,593−6.3%Reduced
Zhang Financial LLC23,571$3.03M0.09%+322+1.4%Added
IAM Advisory, LLC23,515$3.02M0.59%+278+1.2%Added
Checchi Capital Advisers, LLC23,506$3.02M0.19%−279−1.2%Reduced
Broderick Brian C23,484$3.02M0.47%+1,234+5.5%Added
Cigna Investments Inc23,473$3.02M0.39%−203−0.9%Reduced
Marathon Capital Management23,351$3.00M0.61%−334−1.4%Reduced
Precedent Wealth Partners, LLC23,322$3.00M0.50%+572+2.5%Added
Lawood & Co23,298$2.99M2.03%−145−0.6%Reduced
Flavin Financial Services, Inc.23,296$2.99M1.71%+3,163+15.7%Added
OmniStar Financial Group, Inc.23,190$2.98M1.37%+1,804+8.4%Added
Deseret Mutual Benefit Administrators23,182$2.98M0.97%−2,898−11.1%Reduced
Journey Advisory Group, LLC23,149$2.97M0.23%−540−2.3%Reduced
Sumitomo Life Insurance Co22,968$2.95M0.05%−1,327−5.5%Reduced
Mystic Asset Management, Inc.22,899$2.94M0.63%−1,546−6.3%Reduced
Optimist Retirement Group LLC22,801$2.93M1.13%−39−0.2%Reduced
MV Capital Management, Inc.22,792$2.93M0.26%−359−1.6%Reduced
Berkshire Bank22,741$2.92M0.56%−2,553−10.1%Reduced
Brown Miller Wealth Management, LLC22,736$2.92M0.74%00.0%Unchanged
Genus Capital Management Inc.22,719$2.92M0.29%−80,267−77.9%Reduced
MMBG Investment Advisors Co.22,563$2.92M0.23%00.0%Unchanged
Callahan Advisors, LLC22,700$2.92M0.22%−702−3.0%Reduced
Key Financial Inc22,676$2.91M0.48%−2,536−10.1%Reduced
Gilliland Jeter Wealth Management LLC22,675$2.91M0.76%−1,054−4.4%Reduced
Wellington Shields & Co., LLC22,666$2.91M0.65%−600−2.6%Reduced
Monument Capital Management22,665$2.91M0.59%+710+3.2%Added
LVW Advisors, LLC22,654$2.91M0.25%−1,590−6.6%Reduced
Forty-three Eighteen Advisors, LLC22,442$2.88M1.94%+548+2.5%Added
Littlejohn Financial Services, Inc.22,440$2.88M2.10%−1,446−6.1%Reduced
LS Investment Advisors, LLC22,418$2.88M0.39%−8,755−28.1%Reduced