MERCK & CO. INC. (MRK) Institutional Ownership Changes & 13F Activity

MERCK & CO. INC. (MRK). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Kahn Brothers Group, Causeway Capital Management, Sequoia Financial Advisors, Cullen Value Fund, and Dodge & Cox Stock Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Kahn Brothers GroupSell-202,815227,288$27,340,511
Q1 2026Causeway Capital ManagementSell-190,405854,212$102,753,243
Q1 2026Sequoia Financial AdvisorsSell-9,097297,046$35,731,646
Q1 2026Cullen Value FundSell-4,884112,739$13,559,564
Q1 2026Dodge & Cox Stock FundSell-2,155136,050$16,365,455
Q1 2026Mairs & Power Growth FundSell-1,65150,348$6,056,361
Q1 2026Matrix Advisors Value FundSell-1,1911,671$201,005
Q1 2026Hancock Classic ValueSell-8132,511$302,048
Q1 2026Gardner Russo & QuinnSell-6222,141$257,536
Q1 2026Semper Augustus Investments GroupBuy19044,633$5,368,904
Q1 2026Matrix Private Capital GroupSell-698,376$1,014,669
Q4 2025Causeway Capital ManagementSell-89,4401,044,617$109,956,449
Q4 2025Dodge & Cox Stock FundSell-16,070138,205$14,547,458
Q4 2025Cullen Value FundSell-11,693117,623$13,001,569
Q4 2025Sequoia Financial AdvisorsSell-5,422306,143$32,224,599
Q4 2025Kahn Brothers GroupSell-3,647430,103$45,272,674
Q4 2025Matrix Private Capital GroupBuy6018,445$895,955
Q4 2025Mairs & Power Growth FundSell-18851,999$5,473,415
Q4 2025Matrix Advisors Value FundSell-82,862$301,254
Q3 2025Causeway Capital ManagementBuy151,3971,134,057$95,181,306
Q3 2025Kahn Brothers GroupSell-56,715433,750$36,404,663
Q3 2025Sequoia Financial AdvisorsBuy12,467311,565$26,149,660
Q3 2025Cullen Value FundBuy8,890129,316$11,534,234
Q3 2025Mairs & Power Growth FundSell-4,68452,187$4,380,055
Q3 2025Dodge & Cox Stock FundSell-3,025154,275$12,948,301
Q3 2025Matrix Private Capital GroupBuy4047,844$664,616
Q3 2025Matrix Advisors Value FundSell-452,870$240,879
Q2 2025Causeway Capital ManagementBuy84,791982,660$77,787,310
Q2 2025Renaissance Technologies LLCSell-81,872139,820$11,068,154
Q2 2025Sequoia Financial AdvisorsBuy18,652299,098$23,676,589

Frequently asked questions about MRK activity

  • Which institutional owners are buying MRK?

    Institutional owners buying MRK include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MRK activity?

    "Buy" means an investor increased their reported position in MRK compared to the prior reporting period. This reflects growing exposure to MERCK & CO. INC. (MRK) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MRK increasing?

    Institutional interest in MRK can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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