As of October 2026 Great Lakes Dredge & Dock Corp. has a market cap of โฌ1.00 Billion. This makes Great Lakes Dredge & Dock Corp. the world's 6030th 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.