As of August 2026 CoStar Group has a market cap of S$15.61 Billion. This makes CoStar Group the world's 1780th 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 Aug 3rd, 2026 the market cap of CoStar Group was reported to be: