As of April 2025 Alliant Energy has a market cap of €13.92 Billion. This makes Alliant Energy the world's 1139th 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 Apr 15th, 2025 the market cap of Alliant Energy was reported to be: