As of December 2025 Kirby Corporation has a market cap of โน566.05 Billion. This makes Kirby Corporation the world's 2660th 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 Dec 5th, 2025 the market cap of Kirby Corporation was reported to be: