Quest Diagnostics Incorporated

NYSE:DGX Stock Report

Market Cap: US$20.1b

Quest Diagnostics Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:DGX Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
19 Feb 25SellUS$90,795Catherine DohertyIndividual535US$169.71
19 Feb 25SellUS$54,307Patrick PlewmanIndividual320US$169.71
05 Feb 25SellUS$66,214Mark DelaneyIndividual403US$164.30
05 Feb 25SellUS$205,710Vicky GreggIndividual1,250US$164.57
28 Oct 24SellUS$278,525Karthik KuppusamyIndividual1,775US$156.92

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of DGX?
Owner TypeNumber of SharesOwnership Percentage
State or Government168,2280.15%
Individual Insiders417,5810.373%
General Public1,296,5931.16%
Institutions109,941,03998.3%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 65.1% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
12.7%
The Vanguard Group, Inc.
14,233,576US$2.6b2.13%0.03%
9.22%
BlackRock, Inc.
10,311,410US$1.8b2.13%0.02%
6.45%
T. Rowe Price Group, Inc.
7,209,622US$1.3b20.3%0.1%
4.64%
State Street Global Advisors, Inc.
5,184,999US$929.8m0.16%0.03%
3.47%
JP Morgan Asset Management
3,876,573US$695.2m13.1%0.06%
2.82%
Boston Partners Global Investors, Inc.
3,155,708US$565.9m30.5%0.29%
2.67%
Geode Capital Management, LLC
2,982,415US$534.8m7.51%0.03%
2.51%
Victory Capital Management Inc.
2,809,226US$503.8m-10.4%0.29%
1.96%
UBS Asset Management AG
2,194,982US$393.6m12.3%0.03%
1.7%
Dimensional Fund Advisors LP
1,902,355US$341.1m-0.59%0.05%
1.64%
Wells Fargo & Company
1,828,839US$328.0m3.59%0.07%
1.56%
Grantham Mayo Van Otterloo & Co. LLC
1,747,952US$313.5m-12.9%0.66%
1.43%
Wellington Management Group LLP
1,599,216US$286.8m-9.05%0.04%
1.26%
Invesco Capital Management LLC
1,408,845US$252.6m31.8%0.08%
1.21%
Davis Selected Advisers LP
1,354,420US$242.9m-43.3%1.05%
1.19%
Norges Bank Investment Management
1,325,624US$237.7m4.25%0.02%
1.11%
AllianceBernstein L.P.
1,241,855US$222.7m5.46%0.06%
1.1%
Eaton Vance Management
1,233,776US$221.3m44.4%0.04%
1.06%
Fiduciary Management, Inc.
1,185,318US$212.6m-5.28%1.59%
1.05%
Northern Trust Global Investments
1,178,397US$211.3m0.56%0.03%
1.02%
FMR LLC
1,137,087US$203.9m27.8%0.01%
0.96%
M&G Investment Management Limited
1,072,721US$192.4m257%0.35%
0.8%
Morgan Stanley
897,594US$161.0m-2.18%0.02%
0.79%
Managed Account Advisors LLC
878,388US$157.5m71.8%0.02%
0.75%
Squarepoint OPS LLC
843,291US$151.2m444%0.31%

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2025/10/06 21:09
End of Day Share Price 2025/10/03 00:00
Earnings2025/06/30
Annual Earnings2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Quest Diagnostics Incorporated is covered by 47 analysts. 16 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Jasper HellwegArgus Research Company
Brian Kemp DolliverAvondale Partners
Eric ColdwellBaird