As of December 2025 Spire Energy has a market cap of โน436.52 Billion. This makes Spire Energy the world's 3092th 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 9th, 2025 the market cap of Spire Energy was reported to be: