QUEST DIAGNOSTICS INC (DGX) Stock Institutional Trading Activity


QUEST DIAGNOSTICS INC (DGX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include First Eagle U.S. Value, Sequoia Financial Advisors, Olstein Capital Management, Causeway Capital Management, and Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2025First Eagle U.S. ValueSell-1,8623,835$730,874
Q3 2025Sequoia Financial AdvisorsBuy1,29123,343$4,448,736
Q2 2025Olstein Capital ManagementSell-6,00040,000$7,185
Q2 2025First Eagle U.S. ValueBuy1485,697$1,023,353
Q2 2025Sequoia Financial AdvisorsBuy1,02222,052$3,961,136
Q1 2025Olstein Capital ManagementSell-8,21646,000$7,783
Q1 2025First Eagle U.S. ValueBuy6005,549$938,891
Q1 2025Sequoia Financial AdvisorsBuy1,38021,030$3,558,259
Q1 2025Causeway Capital ManagementSell-184,081120,400$20,371,692
Q4 2024Olstein Capital ManagementSell-1,10254,216$8,179
Q4 2024Sequoia Financial AdvisorsBuy94119,650$2,964,389
Q4 2024Causeway Capital ManagementSell-37,579304,481$45,934,011
Q3 2024Olstein Capital ManagementSell-11,68255,318$8,588
Q3 2024First Eagle U.S. ValueBuy5004,949$768,333
Q3 2024Sequoia Financial AdvisorsBuy26818,709$2,904,496
Q3 2024Renaissance Technologies LLCSell-46,00038,100$5,915,025
Q3 2024Causeway Capital ManagementSell-134,056342,060$53,104,835
Q2 2024First Eagle U.S. ValueBuy6004,449$608,979
Q2 2024Sequoia Financial AdvisorsBuy86518,441$2,524,269
Q2 2024Renaissance Technologies LLCSell-114,76384,100$11,511,608
Q2 2024Causeway Capital ManagementSell-25,001476,116$65,170,798
Q1 2024Olstein Capital ManagementBuy9,00067,000$8,918
Q1 2024Renaissance Technologies LLCSell-288,600198,863$26,471
Q1 2024Sequoia Financial AdvisorsSell-12817,576$2,339,600
Q1 2024Causeway Capital ManagementBuy8,410501,117$66,737,994
Q4 2023Olstein Capital ManagementSell-10,00058,000$7,997
Q4 2023Renaissance Technologies LLCSell-50,200487,463$67,211
Q4 2023Sequoia Financial AdvisorsBuy17,70417,704$2,441,084
Q4 2023Causeway Capital ManagementBuy3,013492,707$67,934,466
Q3 2023Olstein Capital ManagementBuy2,00068,000$8,286

Frequently asked questions about DGX activity

  • Which institutional owners are buying DGX?

    Institutional owners buying DGX 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 DGX activity?

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

  • Is institutional interest in DGX increasing?

    Institutional interest in DGX 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.