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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 Businesses2026-02-191,433$204.83
$293.52kSell
Michael E. PrevoznikSVP General Counsel2026-02-191,111$204.83
$227.57kSell
Patrick PlewmanSVP for Diagnostic Services2026-02-19958$204.83
$196.23kSell
J. E. DavisCEO and President2026-02-183,788$206.99
$784.08kSell
J. E. DavisCEO and President2026-02-182,396$210.01
$503.18kSell
Catherine T. DohertyEVP Regional Businesses2026-02-18728$206.99
$150.69kSell
Mark E. DelaneySVP Chief Commercial Officer2026-02-18205$210.01
$43.05kSell
Michael E. PrevoznikSVP General Counsel2026-02-18347$206.99
$71.83kSell
Michael E. PrevoznikSVP General Counsel2026-02-18301$210.01
$63.21kSell
Mark E. DelaneySVP Chief Commercial Officer2026-02-18230$206.99
$47.61kSell

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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 Inc12.94%14,392,082$2.91BInstitution
Blackrock Inc8.50%9,459,218$1.91BInstitution
Price T Rowe Associates Inc5.66%6,297,157$1.27BInstitution
State Street Corp4.84%5,382,547$1.09BInstitution
Jpmorgan Chase Co3.73%4,145,896$839.17MInstitution
Boston Partners3.52%3,913,326$792.10MInstitution
Geode Capital Management LLC2.72%3,028,207$612.94MInstitution
Morgan Stanley2.42%2,693,568$545.21MInstitution
Victory Capital Management Inc1.91%2,126,422$430.41MInstitution
Dimensional Fund Advisors LP1.74%1,931,548$390.96MInstitution

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DGX vs Diagnostic & Research Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DGX94.77%1.79%Net SellingNet Selling
LH95.15%1.55%Net SellingNet Selling
WAT92.19%7.81%Net SellingNet Selling
EXAS84.94%3.48%Net SellingNet Selling
ILMN93.46%6.54%Net SellingNet Selling
View Top Diagnostic & Research Stocks

Quest Diagnostics Stock Ownership FAQ

Who owns Quest Diagnostics?

Quest Diagnostics (NYSE: DGX) is owned by 94.77% institutional shareholders, 1.79% Quest Diagnostics insiders, and 3.45% retail investors. Vanguard Group Inc is the largest individual Quest Diagnostics shareholder, owning 14.39M shares representing 12.94% of the company. Vanguard Group Inc's Quest Diagnostics shares are currently valued at $2.91B.

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