MARSH & MCLENNAN COS (MMC) Institutional Ownership Changes & 13F Activity

MARSH & MCLENNAN COS (MMC). 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 AKO Capital, Jensen Investment Management, Parnassus Endeavor Fund, Renaissance Technologies LLC, and Torray Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026AKO CapitalSell-1,223,333261,527$45,362
Q1 2026Jensen Investment ManagementBuy66,8871,151,204$199,676,334
Q1 2026Parnassus Endeavor FundBuy36,8182,210,439$383,400,645
Q1 2026Renaissance Technologies LLCSell-32,100365,500$63,395,975
Q1 2026Torray FundSell-3,34894,329$16,361,365
Q1 2026Sequoia Financial AdvisorsBuy1,97319,058$3,305,552
Q1 2026Yacktman Asset ManagementBuy10019,380$3,361,461
Q1 2026Mairs & Power Growth FundSell-561,300$225,485
Q4 2025Jensen Investment ManagementSell-1,322,3281,084,317$201,162,490
Q4 2025Renaissance Technologies LLCSell-722,700397,600$73,762,752
Q4 2025Parnassus Endeavor FundSell-413,0832,173,621$403,250,168
Q4 2025AKO CapitalSell-314,8931,484,860$275,471
Q4 2025Torray FundBuy27,66297,677$18,121,037
Q4 2025Yacktman Asset ManagementBuy1,93519,280$3,576,826
Q4 2025Sequoia Financial AdvisorsSell-70217,085$3,169,525
Q3 2025Sequoia Financial AdvisorsSell-166,93817,787$3,584,524
Q3 2025Renaissance Technologies LLCBuy146,3691,120,300$225,774,059
Q3 2025Parnassus Endeavor FundSell-72,7802,586,704$521,298,457
Q3 2025AKO CapitalBuy17,5531,799,753$362,704
Q3 2025Yacktman Asset ManagementBuy17,34517,345$3,495,538
Q3 2025Jensen Investment ManagementSell-16,9922,406,645$485,011,167
Q3 2025Mairs & Power Growth FundSell-181,356$273,275
Q2 2025Renaissance Technologies LLCBuy354,931973,931$212,940,274
Q2 2025AKO CapitalSell-339,5301,782,200$389,660
Q2 2025Jensen Investment ManagementSell-206,0492,423,637$529,903,994
Q2 2025Parnassus Endeavor FundSell-137,9932,659,484$581,469,582
Q2 2025Sequoia Financial AdvisorsBuy14,285184,725$40,388,282
Q2 2025Torray FundSell-80070,015$15,308,080
Q2 2025Mairs & Power Growth FundSell-751,374$300,411
Q1 2025Parnassus Endeavor FundSell-771,6642,797,477$682,668,312

Frequently asked questions about MMC activity

  • Which institutional owners are buying MMC?

    Institutional owners buying MMC 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 MMC activity?

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

  • Is institutional interest in MMC increasing?

    Institutional interest in MMC 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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