QUEST DIAGNOSTICS INC (DGX) Institutional Ownership Changes & 13F Activity

QUEST DIAGNOSTICS INC (DGX) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Olstein Capital Management, First Eagle U.S. Value, Sequoia Financial Advisors, Causeway Capital Management, and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2023Renaissance Technologies LLCSell-50,200487,463$67,211
Q4 2023Sequoia Financial AdvisorsBuy17,70417,704$2,441,084
Q4 2023Olstein Capital ManagementSell-10,00058,000$7,997
Q4 2023Causeway Capital ManagementBuy3,013492,707$67,934,466
Q3 2023Causeway Capital ManagementBuy181,201489,694$59,674,164
Q3 2023Renaissance Technologies LLCSell-99,937537,663$65,520
Q3 2023Olstein Capital ManagementBuy2,00068,000$8,286
Q3 2023First Eagle U.S. ValueBuy1783,849$469,039
Q2 2023Renaissance Technologies LLCSell-33,800637,600$89,621
Q2 2023Olstein Capital ManagementBuy11,00066,000$9,277
Q2 2023Causeway Capital ManagementBuy2,991308,493$43,361,828
Q1 2023Renaissance Technologies LLCSell-296,500671,400$94,990
Q1 2023Olstein Capital ManagementBuy9,00055,000$7,781
Q1 2023First Eagle U.S. ValueBuy3,3973,671$519,373
Q4 2022Renaissance Technologies LLCBuy96,000967,900$151,418
Q4 2022Olstein Capital ManagementSell-41,00046,000$7,196
Q4 2022First Eagle U.S. ValueSell-25274$42,865
Q3 2022Renaissance Technologies LLCSell-249,400871,900$106,973
Q3 2022Olstein Capital ManagementBuy19,60087,000$7,122
Q3 2022First Eagle U.S. ValueBuy168299$37
Q2 2022Renaissance Technologies LLCSell-10,6001,121,300$149,110
Q2 2022Olstein Capital ManagementSell-7,60067,400$8,963
Q1 2022Hancock Classic ValueSell-427,7341,966$269
Q1 2022Renaissance Technologies LLCSell-185,8001,131,900$154,912
Q1 2022Olstein Capital ManagementBuy33,00075,000$10,265
Q1 2022First Eagle U.S. ValueBuy131131$18
Q4 2021Renaissance Technologies LLCBuy350,4001,317,700$227,975
Q4 2021Olstein Capital ManagementSell-18,00042,000$7,266
Q3 2021Renaissance Technologies LLCBuy779,000967,300$140,558
Q3 2021Olstein Capital ManagementSell-2,00060,000$8,719

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.

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