As of March 2026 NewMarket Corp has a market cap of โน539.72 Billion. This makes NewMarket Corp the world's 2774th 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 19th, 2026 the market cap of NewMarket Corp was reported to be: