As of February 2026 Spire Inc. has a market cap of โน455.63 Billion. This makes Spire Inc. the world's 3113th 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 Feb 4th, 2026 the market cap of Spire Inc. was reported to be: