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NYSE: DGX
Quest Diagnostics Inc Stock Ownership - Who owns Quest Diagnostics?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Quest Diagnostics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
J. E. DavisCEO and President2025-11-057,143$175.57
$1.25MSell
Gary M. PfeifferDirector2025-10-221,482$182.40
$270.32kSell
Vicky B. GreggDirector2025-10-2170$189.08
$13.24kBuy
Mark E. DelaneySVP Chief Commercial Officer2025-10-2115$189.08
$2.84kBuy
Sam SamadExecutive Vice President CFO2025-10-2168$189.08
$12.86kBuy
Robert B. CarterDirector2025-10-216$189.09
$1.13kBuy
Karthik KuppusamySVP Clinical Solutions2025-10-2115$189.08
$2.84kBuy
Patrick PlewmanSVP for Diagnostic Services2025-10-2146$189.08
$8.70kBuy
Michael E. PrevoznikSVP General Counsel2025-09-26144$188.66
$27.17kSell
Michael E. PrevoznikSVP General Counsel2025-09-2683$187.22
$15.54kSell

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Net Insider Buy/Sell (L12M) Ownership

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DGX Shareholders

What type of owners hold Quest Diagnostics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Vanguard Group Inc12.81%14,251,632$2.66BInstitution
Blackrock Inc8.99%10,002,035$1.87BInstitution
Price T Rowe Associates Inc6.30%7,005,990$1.31BInstitution
State Street Corp4.70%5,223,930$976.61MInstitution
Jpmorgan Chase Co3.88%4,317,391$807.14MInstitution
Boston Partners3.63%4,036,881$754.69MInstitution
Geode Capital Management LLC2.73%3,036,485$567.67MInstitution
Victory Capital Management Inc2.11%2,343,974$438.21MInstitution
Morgan Stanley2.06%2,286,910$427.54MInstitution
Dimensional Fund Advisors LP1.71%1,907,510$356.61MInstitution

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DGX vs Diagnostic & Research Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DGX93.17%1.77%Net SellingNet Selling
LH92.51%1.52%Net SellingNet Selling
WAT92.17%7.83%Net SellingNet Buying
ILMN93.36%6.64%Net SellingNet Selling
MEDP26.58%73.42%Net BuyingNet Selling
View Top Diagnostic & Research Stocks

Quest Diagnostics Stock Ownership FAQ

Who owns Quest Diagnostics?

Quest Diagnostics (NYSE: DGX) is owned by 93.17% institutional shareholders, 1.77% Quest Diagnostics insiders, and 5.05% retail investors. Vanguard Group Inc is the largest individual Quest Diagnostics shareholder, owning 14.25M shares representing 12.81% of the company. Vanguard Group Inc's Quest Diagnostics shares are currently valued at $2.66B.

If you're new to stock investing, here's how to buy Quest Diagnostics stock.
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