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
Q4 2021Dodge & Cox Stock FundSell-7,520214,158$16,413
Q4 2021Hillman Value FundSell-1,04198,696$7,564
Q4 2021Hancock Classic ValueSell-7346,885$528
Q4 2021Mairs & Power Growth FundSell-52663,502$4,867
Q4 2021Matrix Private Capital GroupBuy25210,989$850
Q4 2021Gardner Russo & QuinnBuy103,888$298
Q3 2021Renaissance Technologies LLCBuy740,2001,499,000$112,590
Q3 2021Sound Shore ManagementBuy424,9391,671,798$125,569
Q3 2021Parnassus Endeavor FundBuy249,6311,956,933$146,985
Q3 2021Sequoia Financial AdvisorsSell-41,57735,406$2,659
Q3 2021Dodge & Cox Stock FundSell-7,350221,678$16,650
Q3 2021Hillman Value FundBuy4,18099,737$7,491
Q3 2021Mairs & Power Growth FundSell-2,92564,028$4,809
Q3 2021Matrix Advisors Value FundBuy2,148175,000$13,144
Q3 2021Matrix Private Capital GroupBuy12510,737$813
Q3 2021Gardner Russo & QuinnBuy103,878$291
Q2 2021Berkshire HathawaySell-8,725,1969,157,192$712,155
Q2 2021Parnassus Endeavor FundBuy1,707,3021,707,302$132,777
Q2 2021Renaissance Technologies LLCBuy251,366758,800$59,012
Q2 2021Matrix Advisors Value FundBuy30,974172,852$13,443
Q2 2021Hillman Value FundBuy27,57995,557$7,431
Q2 2021Dodge & Cox Stock FundSell-18,058229,028$17,812
Q2 2021Sequoia Financial AdvisorsBuy16,93076,983$5,987
Q2 2021Sound Shore ManagementSell-11,7341,246,859$96,968
Q2 2021Mairs & Power Growth FundSell-8,92066,953$5,207
Q2 2021Hancock Classic ValueSell-9277,619$593
Q2 2021Matrix Private Capital GroupBuy2210,612$832
Q2 2021Gardner Russo & QuinnBuy103,868$301
Q1 2021Berkshire HathawaySell-10,815,04717,882,388$1,378,553
Q1 2021Renaissance Technologies LLCBuy479,219507,434$39,118

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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