Quest Diagnostics Inc. (DGX)
Health Care ยท Services-Medical Laboratories
Quest Diagnostics Inc. (DGX) is listed on the New York Stock Exchange, where its shares have traded since December 17, 1996. SentiSense covers Quest Diagnostics Inc. in the Health Care sector, and its Standard Industrial Classification is Services-Medical Laboratories. James E. Davis is its chief executive officer. The company reports 57,000 employees, and its corporate website is www.questdiagnostics.com.
About Quest Diagnostics Inc.
Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US. The company generates over 97% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,400 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk-assessment services, and information technology solutions.
Latest reported results
Quest Diagnostics Incorporated reported revenue of $3.10 billion for Q3 FY2026, up 10.0% from the same period a year earlier.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 1,082 institutions reported holding DGX, with 104.3 million shares worth $22.1 billion in aggregate. The largest reported holders were Vanguard, BlackRock and State Street. Of the 5 largest reported holders, 4 added shares and 1 reduced its position during the quarter.
More on DGX
- DGX sentiment: whether news and social coverage of Quest Diagnostics Inc. leans bullish or bearish, and the stories driving it.
- DGX ownership: all 1,082 reporting institutions, plus insider and congressional trades.
- DGX financials: revenue, net income, operating margin and free cash flow through Q3 FY2026.
SentiSense also tracks daily options readings for Quest Diagnostics Inc.: IV rank, put/call percentile, 25-delta skew and open-interest walls.
Frequently asked questions
What does Quest Diagnostics Inc. do?
Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US.
What sector is DGX in?
SentiSense classifies Quest Diagnostics Inc. in the Health Care sector, and its Standard Industrial Classification is Services-Medical Laboratories.
Where does DGX stock trade?
Quest Diagnostics Inc. (DGX) is listed on the New York Stock Exchange, where its shares have traded since December 17, 1996.
Who is the CEO of Quest Diagnostics Inc.?
James E. Davis is the chief executive officer of Quest Diagnostics Inc..