Quest Diagnostics, Inc. engages in the provision of diagnostic testing, information, and services. It operates through the Diagnostic Information Services (DIS) and All Other segments. The DIS segment offers diagnostic information services to physicians, hospitals, patients, and consumers. The All Other segment consists of risk assessment services and healthcare information technology. The company was founded in 1967 and is headquartered in Secaucus, NJ.
Sector:
Health Services
Industry:
Servicestothe Health Industry
Employees:
56,000
Frequently Asked Questions
What is Market Cap of Quest Diagnostics, Inc.?
Market cap, also known as market capitalization, is the total market value of a company. It’s calculated by multiplying the current market price by the total number of shares outstanding. Quest Diagnostics, Inc. market cap is $20.5B.
What is the 52-week high for Quest Diagnostics, Inc.?
52 week high is the highest price of a stock in the past 52 weeks, or one year. Quest Diagnostics, Inc. 52 week high is $185.62 as of September 19, 2025.
What is the 52-week low for Quest Diagnostics, Inc.?
52 week low is the lowest price of a stock in the past 52 weeks, or one year. Quest Diagnostics, Inc. 52 week low is $146.17 as of September 19, 2025.
What is Quest Diagnostics, Inc. stock price today?
Quest Diagnostics, Inc. stock price today is $183.33.
What was Quest Diagnostics, Inc. stock price yesterday?
Quest Diagnostics, Inc. stock price yesterday was $182.25.
What is the PE ratio of Quest Diagnostics, Inc.?
The Price-to-Earnings (or P/E) ratio is a commonly used tool for valuing a company. It’s calculated by dividing the current share price by the earnings per share (or EPS). It can also be calculated by dividing the company’s Market Cap by the Net Profit. Quest Diagnostics, Inc.’s P/E ratio is 21.92.
What is the Price-to-Book ratio of Quest Diagnostics, Inc.?
The Price-to-Book (P/B) ratio is a commonly used tool for valuing a company. It’s calculated by dividing a company’s market capitalization by its book value. Quest Diagnostics, Inc. P/B ratio is 2.8408.
What is the 50-day moving average of Quest Diagnostics, Inc.?
The 50-day moving average is a frequently used data point by active investors and traders to understand the trend of a stock. It’s calculated by averaging the closing stock price over the previous 50 trading days. Quest Diagnostics, Inc. 50-day moving average is $176.17.
How many employess does Quest Diagnostics, Inc. has?
DGX Quest Diagnostics, Inc.