Company Profile
Quest Diagnostics Stock Price, News & Analysis
- Ticker:
- DGX
- Exchange:
- NYSE
- Sector:
- MedTech
- Location:
- Secaucus, New Jersey
Stock performance
238.50 USD (+1.13%)
Close
Last updated: August 6, 2026
21.4B USD
Market cap
Why the stock is moving
As of Aug 6, 2026, DGX closed up 1.13% at $238.50. No new same-company headline was identified in the current news window.
Company overview
Diagnostic Information Services Leader
Quest Diagnostics provides laboratory testing and diagnostic insights to physicians, hospitals, consumers, and population-health partners. Its core value lies in converting testing data into information that supports disease detection, treatment decisions, and health management.
Consumer Access Channels
Quest is expanding access through questhealth.com, consumer-health services, wearable-device partnerships, and wellness programs. These channels allow individuals and employers to use the company’s laboratory network outside traditional physician-ordered testing workflows.
Advanced Diagnostics
The Advanced Diagnostics portfolio includes blood-based Alzheimer’s testing and assays in cardiometabolic disease, endocrinology, and liver fibrosis. These higher-value tests extend Quest into areas requiring specialized interpretation and clinical decision support.
Oncology Testing and Digital Integration
Quest received New York State approval for the Haystack minimal residual disease test and is piloting molecular-testing integration through Flatiron Health’s OncoEMR Molecular Profiling Integration platform. These initiatives extend the company beyond traditional laboratory services into precision oncology and embedded clinical workflows.
National Laboratory Network
Quest’s scale is built on a broad network of laboratories, patient service centers, logistics, and relationships with physicians and health systems. This infrastructure supports high-volume routine testing while providing a distribution channel for newly introduced advanced diagnostics.
Future catalysts
Quest Diagnostics should be watched for advanced-diagnostics mix, volume trends, and any acquisition or network-expansion step. The next update will help show whether the company is moving from promise to a more de-risked stage of execution. Investors will care less about the label than about whether the platform can keep producing credible next steps.
Recent news
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Similar stocks
Peer names with similar commercial maturity, therapeutic overlap, or catalyst patterns.
Frequently Asked Questions
What is the current stock price of Quest Diagnostics (DGX)?
Quest Diagnostics (DGX) most recently closed at 238.50 USD, a +1.13% move versus the previous session.
What is the market cap of Quest Diagnostics (DGX)?
Quest Diagnostics currently has a market capitalization of 21.4B USD on BioPharmSignal.
What does Quest Diagnostics do?
Diagnostic Information Services Leader Quest Diagnostics provides laboratory testing and diagnostic insights to physicians, hospitals, consumers, and population-health partners. Its core value lies in converting testing data into information that supports disease detection, treatment decisions, and health management. Consumer Access Channels Quest is...
On which exchange is DGX stock listed?
Quest Diagnostics (DGX) is associated with NYSE, Secaucus, New Jersey, MedTech.
What is Diagnostic?
Quest Diagnostics should be watched for advanced-diagnostics mix, volume trends, and any acquisition or network-expansion step.
Which conditions is Quest Diagnostics targeting with Diagnostic?
Quest Diagnostics is associated with oncology, metabolic disease based on its company overview and current catalyst commentary.
How does Quest Diagnostics describe recent progress with Diagnostic?
Quest Diagnostics should be watched for advanced-diagnostics mix, volume trends, and any acquisition or network-expansion step.
What is Information?
Diagnostic Information Services Leader Quest Diagnostics provides laboratory testing and diagnostic insights to physicians, hospitals, consumers, and population-health partners.