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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
Catherine T. DohertyEVP Regional Businesses2026-03-055,558$206.21
$1.15MSell
Michael E. PrevoznikSVP General Counsel2026-03-053,878$206.21
$799.68kSell
Patrick PlewmanSVP for Diagnostic Services2026-03-052,855$206.21
$588.73kSell
Mark E. DelaneySVP Chief Commercial Officer2026-03-042,326$204.86
$476.50kSell
J. E. DavisCEO and President2026-03-0451,652$204.86
$10.58MBuy
J. E. DavisCEO and President2026-03-0426,414$204.86
$5.41MSell
Mark E. DelaneySVP Chief Commercial Officer2026-03-045,682$204.86
$1.16MBuy
Michael J. DeppeSVP Corp. Controller CAO2026-03-041,473$204.86
$301.76kBuy
Michael J. DeppeSVP Corp. Controller CAO2026-03-04750$204.86
$153.65kSell
Catherine T. DohertyEVP Regional Businesses2026-03-0411,364$204.86
$2.33MBuy

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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$2.95BInstitution
Blackrock Inc8.61%9,459,218$1.94BInstitution
Price T Rowe Associates Inc5.73%6,297,157$1.29BInstitution
State Street Corp4.90%5,382,547$1.10BInstitution
Jpmorgan Chase Co3.77%4,145,896$850.07MInstitution
Boston Partners3.56%3,913,326$802.39MInstitution
Geode Capital Management LLC2.76%3,028,207$620.90MInstitution
Morgan Stanley2.45%2,693,568$552.29MInstitution
Victory Capital Management Inc1.94%2,126,422$436.00MInstitution
Dimensional Fund Advisors LP1.76%1,931,548$396.04MInstitution

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DGX vs Diagnostic & Research Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DGX95.88%1.82%Net SellingNet Buying
LH96.94%1.62%Net SellingNet Selling
ILMN93.45%6.55%Net BuyingNet Buying
MTD95.44%4.56%Net BuyingNet Buying
NTRA80.36%19.64%Net SellingNet Selling
View Top Diagnostic & Research Stocks

Quest Diagnostics Stock Ownership FAQ

Who owns Quest Diagnostics?

Quest Diagnostics (NYSE: DGX) is owned by 95.88% institutional shareholders, 1.82% Quest Diagnostics insiders, and 2.30% retail investors. Vanguard Group Inc is the largest individual Quest Diagnostics shareholder, owning 14.39M shares representing 13.00% of the company. Vanguard Group Inc's Quest Diagnostics shares are currently valued at $2.94B.

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