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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, Q4 2023

Institutional positions in Merck & Co., Inc. as of Dec 31, 2023. 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
3,443
+275 vs. Q3 2023
Shares held
1.94B
+26.5M (+1.4%) vs. Q3 2023
Total value
$211.6B
+$14.5B (+7.4%) vs. Q3 2023
New holders
382
1,247 more added
Sold out
107
1,486 more reduced

53 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2023: 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 holdersQ4 2023: 3,443 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 heldQ4 2023: $211.6B
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, Q4 2023

Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q3 2023.

Institutions holding MRK in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Cetera Advisors LLC120,320$13.1M0.18%+1,896+1.6%Added
Prospera Financial Services Inc120,958$13.2M0.44%+9,359+8.4%Added
Smithfield Trust Co122,385$13.3M0.75%−470−0.4%Reduced
Investment House LLC122,379$13.3M0.94%+743+0.6%Added
Auxier Asset Management122,795$13.4M2.17%−1,336−1.1%Reduced
ARS Investment Partners, LLC122,857$13.4M1.48%+4,731+4.0%Added
Clough Capital Partners L P122,953$13.4M1.48%−10,697−8.0%Reduced
Mengis Capital Management, Inc.123,051$13.4M2.51%−747−0.6%Reduced
Livforsakringsbolaget Skandia, Omsesidigt122,407$13.4M1.28%+2,544+2.1%Added
Signature Estate & Investment Advisors LLC123,494$13.5M0.40%+7,598+6.6%Added
Sphera Funds Management Ltd.123,600$13.5M2.50%00.0%Unchanged
Beacon Investment Advisory Services, Inc.123,856$13.5M0.61%−3,445−2.7%Reduced
iA Global Asset Management Inc.123,857$13.5M0.31%+21,790+21.3%Added
Foundry Partners, LLC124,025$13.5M0.81%−15,365−11.0%Reduced
Wetherby Asset Management Inc124,350$13.6M0.71%+933+0.8%Added
Buckingham Strategic Wealth, LLC124,514$13.6M0.16%−3,574−2.8%Reduced
Snowden Capital Advisors LLC124,684$13.6M0.52%−4,120−3.2%Reduced
American Assets Investment Management, LLC125,000$13.6M1.41%00.0%Unchanged
M&R Capital Management Inc125,465$13.7M3.42%−1,511−1.2%Reduced
Marex Group plc125,492$13.7M0.54%+122,609+4,252.8%Added
Parsons Capital Management Inc126,811$13.8M0.99%−1,233−1.0%Reduced
Greenwood Gearhart Inc127,060$13.9M1.48%−26,001−17.0%Reduced
Boston Private Wealth LLC127,296$13.9M0.34%−12,226−8.8%Reduced
Woodstock Corp127,590$13.9M1.61%−363−0.3%Reduced
Old National Bancorp127,815$13.9M0.37%−5,512−4.1%Reduced
Park Avenue Securities LLC128,126$14.0M0.19%−15,401−10.7%Reduced
Edge Wealth Management LLC128,213$14.0M3.06%−2,229−1.7%Reduced
Omers Administration Corp128,248$14.0M0.18%00.0%Unchanged
Stonebridge Capital Advisors LLC128,309$14.0M1.40%+4,464+3.6%Added
Jacobs Levy Equity Management, Inc129,127$14.1M0.07%+11,722+10.0%Added
Patten & Patten Inc129,196$14.1M1.16%−6,567−4.8%Reduced
Fishman Jay A Ltd129,901$14.2M1.62%+4,965+4.0%Added
Connors Investor Services Inc129,901$14.2M1.59%+6,374+5.2%Added
Cornerstone Advisors, LLC130,600$14.2M0.63%−17,200−11.6%Reduced
Eagle Global Advisors LLC130,667$14.2M0.86%−11,466−8.1%Reduced
FineMark National Bank & Trust131,140$14.3M0.58%−2,109−1.6%Reduced
Edge Capital Group, LLC131,724$14.4M0.80%+10,365+8.5%Added
LMCG Investments, LLC131,774$14.4M0.89%−1,584−1.2%Reduced
Diversified Trust Co131,829$14.4M0.48%+27,304+26.1%Added
New Mexico Educational Retirement Board131,986$14.4M0.55%00.0%Unchanged
Farmers & Merchants Investments Inc132,258$14.4M0.53%−1,386−1.0%Reduced
Black Creek Investment Management Inc.132,300$14.4M0.47%−80,000−37.7%Reduced
Granite Bay Wealth Management, LLC139,041$14.4M0.13%00.0%Unchanged
Karpas Strategies, LLC132,934$14.5M4.79%+79+0.1%Added
Easterly Investment Partners LLC133,240$14.5M1.55%−2,666−2.0%Reduced
Calamos Wealth Management LLC134,092$14.6M0.92%−1,139−0.8%Reduced
Intact Investment Management Inc.134,100$14.6M0.59%+5,400+4.2%Added
Ar Asset Management Inc134,320$14.6M3.84%−250−0.2%Reduced
Beck Mack & Oliver LLC134,461$14.7M0.34%−599−0.4%Reduced
Shelton Capital Management135,730$14.8M0.47%+30,038+28.4%Added
CCM Investment Advisers LLC135,932$14.8M1.82%+2,235+1.7%Added
Cutter Capital Management, LP136,098$14.8M7.09%+136,098New
Wesleyan Assurance Society136,371$14.9M1.47%00.0%Unchanged
Charter Trust Co137,403$15.0M1.12%+412+0.3%Added
Middleton & Co Inc138,017$15.0M1.88%+4,012+3.0%Added
Lido Advisors, LLC137,824$15.1M0.15%+3,533+2.6%Added
Congress Asset Management Co138,991$15.2M0.12%−5,235−3.6%Reduced
Alley Investment Management Company, LLC139,940$15.3M2.23%+7,434+5.6%Added
Moore Capital Management, LP140,000$15.3M0.37%+115,000+460.0%Added
Columbia Asset Management140,020$15.3M3.12%−1,281−0.9%Reduced
Gratus Capital LLC140,955$15.4M0.87%+40,073+39.7%Added
Washington Trust Bank141,157$15.4M1.36%−1,781−1.2%Reduced
Abner Herrman & Brock LLC141,537$15.4M2.17%−2,521−1.7%Reduced
Goelzer Investment Management, Inc.141,581$15.4M0.99%−1,280−0.9%Reduced
Motco141,816$15.5M0.99%−7,250−4.9%Reduced
Moors & Cabot, Inc.142,047$15.5M0.96%−1,221−0.9%Reduced
Blue Chip Partners, Inc.142,375$15.5M1.62%+15,757+12.4%Added
Bourgeon Capital Management LLC142,419$15.5M3.43%−592−0.4%Reduced
Massmutual Trust Co FSB143,095$15.6M0.52%−81−0.1%Reduced
Davy Global Fund Management Ltd144,028$15.7M1.85%+58,170+67.8%Added
ARS Wealth Advisors Group, LLC144,061$15.7M2.33%+45,138+45.6%Added
Gotham Asset Management, LLC144,208$15.7M0.29%+53,836+59.6%Added
Lombard Odier Asset Management (Switzerland) SA144,324$15.7M2.10%+7,230+5.3%Added
AustralianSuper Pty Ltd145,092$15.8M0.09%+145,092New
RMB Capital Management, LLC145,516$15.9M0.48%+9,464+7.0%Added
Metis Global Partners, LLC145,574$15.9M0.63%+16,730+13.0%Added
Central Trust Co145,756$15.9M0.42%+1,333+0.9%Added
Bragg Financial Advisors, Inc145,916$15.9M0.76%−2,633−1.8%Reduced
Empower Advisory Group, LLC146,380$16.0M0.06%−5,476−3.6%Reduced
Rhenman & Partners Asset Management AB147,500$16.1M1.61%−42,500−22.4%Reduced
National Asset Management, Inc.146,629$16.1M0.43%−15,946−9.8%Reduced
Ledyard National Bank147,695$16.1M1.66%+614+0.4%Added
Wescott Financial Advisory Group, LLC150,608$16.4M2.30%−1,290−0.8%Reduced
Credit Agricole S A151,396$16.5M0.34%+83,611+123.3%Added
Cohen Klingenstein LLC151,580$16.5M0.68%−145−0.1%Reduced
Cadinha & Co LLC152,284$16.6M2.65%+243+0.2%Added
Applied Finance Capital Management, LLC152,919$16.7M1.45%+16,209+11.9%Added
Bridgeway Capital Management, LLC152,993$16.7M0.36%+34,562+29.2%Added
Congress Wealth Management LLC153,003$16.7M0.31%+15,340+11.1%Added
Louisiana State Employees Retirement System153,200$16.7M0.35%−4,000−2.5%Reduced
ExodusPoint Capital Management, LP153,655$16.8M0.21%−463,994−75.1%Reduced
MAI Capital Management154,905$16.9M0.22%+536+0.3%Added
Quest Investment Management LLC155,097$16.9M2.12%+18,688+13.7%Added
Beese Fulmer Investment Management, Inc.155,542$17.0M1.76%+54,212+53.5%Added
Ardevora Asset Management LLP157,288$17.1M1.53%−119,118−43.1%Reduced
Capital International Investors157,905$17.2M0.00%+4,069+2.6%Added
Prospector Partners LLC158,187$17.2M2.17%+610+0.4%Added
Woodmont Investment Counsel LLC158,631$17.3M1.62%+1,969+1.3%Added
Parthenon LLC158,883$17.3M2.39%−1,596−1.0%Reduced
Perigon Wealth Management, LLC159,990$17.4M0.57%+44,738+38.8%Added