DGX Quest Diagnostics Incorporated
NYSEActiveCommon stock
DGX is the ticker symbol of Quest Diagnostics Incorporated, which is listed on NYSE.
DGX at a glance
- Symbol
- DGX
- Company / issuer
- Quest Diagnostics Incorporated
- Security type
- Common stock
- Exchange
- NYSE
- Status
- Actively traded
- Seen in listing files
- Apr 2015 – present
- Sector
- Health Care
- Industry
- Medical Specialities
- Country
- United States
- Market cap
- $26.1 billion (Sep 2026)
Quest Diagnostics Incorporated company profile
- Industry (SIC)
- Services-Medical Laboratories
- Headquarters
- Secaucus, NJ
- Incorporated in
- DE
- Fiscal year end
- December 31
- SEC filer category
- Large accelerated filer
- Latest annual report
- 10-K filed 2026-02-26
- Latest interim report
- 10-Q filed 2026-07-23
- SEC CIK
- 1022079
Former company names
- Corning Clinical Laboratories Inc (until 1997)
Source: SEC EDGAR filer data.
DGX price chart
Interactive chart provided by TradingView (loads third-party scripts).
Frequently asked questions
What company has the ticker symbol DGX?
DGX is the ticker symbol of Quest Diagnostics Incorporated on NYSE.
Is DGX still trading?
Yes. DGX appears in the current NYSE listings as of Sep 2026.
Which exchange is DGX listed on?
DGX is listed on NYSE.
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