As of May 2026 Kirby Corporation has a market cap of โน736.49 Billion. This makes Kirby Corporation the world's 2415th 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 May 4th, 2026 the market cap of Kirby Corporation was reported to be: