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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
Michael E. PrevoznikSVP General Counsel2026-03-053,878$206.21
$799.68kSell
Catherine T. DohertyEVP Regional Businesses2026-03-055,558$206.21
$1.15MSell
Patrick PlewmanSVP for Diagnostic Services2026-03-052,855$206.21
$588.73kSell
Sam SamadExecutive Vice President CFO2026-03-0413,947$204.86
$2.86MBuy
Michael E. PrevoznikSVP General Counsel2026-03-043,354$204.86
$687.10kSell
Michael E. PrevoznikSVP General Counsel2026-03-047,232$204.86
$1.48MBuy
Patrick PlewmanSVP for Diagnostic Services2026-03-042,827$204.86
$579.14kSell
Patrick PlewmanSVP for Diagnostic Services2026-03-045,682$204.86
$1.16MBuy
Karthik KuppusamySVP Clinical Solutions2026-03-042,628$204.86
$538.37kSell
J. E. DavisCEO and President2026-03-0451,652$204.86
$10.58MBuy

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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 Inc13.10%14,392,082$2.87BInstitution
Blackrock Inc8.61%9,459,218$1.88BInstitution
Price T Rowe Associates Inc5.73%6,297,157$1.25BInstitution
State Street Corp4.90%5,382,547$1.07BInstitution
Jpmorgan Chase Co3.77%4,145,896$825.90MInstitution
Boston Partners3.56%3,913,326$779.57MInstitution
Geode Capital Management LLC2.76%3,028,207$603.25MInstitution
Morgan Stanley2.45%2,693,568$536.59MInstitution
Victory Capital Management Inc1.94%2,126,422$423.60MInstitution
Dimensional Fund Advisors LP1.76%1,931,548$384.78MInstitution

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DGX vs Diagnostic & Research Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DGX96.57%1.83%Net SellingNet Buying
LH96.90%1.55%Net SellingNet Selling
EXAS85.07%3.51%Net SellingNet Selling
MTD95.43%4.57%Net BuyingNet Buying
ILMN93.48%6.52%Net SellingNet Selling
View Top Diagnostic & Research Stocks

Quest Diagnostics Stock Ownership FAQ

Who owns Quest Diagnostics?

Quest Diagnostics (NYSE: DGX) is owned by 96.57% institutional shareholders, 1.83% Quest Diagnostics insiders, and 1.60% retail investors. Vanguard Group Inc is the largest individual Quest Diagnostics shareholder, owning 14.39M shares representing 13.10% of the company. Vanguard Group Inc's Quest Diagnostics shares are currently valued at $2.87B.

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