As of March 2025 Quest Diagnostics has a market cap of €17.06 Billion. This makes Quest Diagnostics the world's 1048th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Mar 24th, 2025 the market cap of Quest Diagnostics was reported to be: