As of December 2025 Vistra has a market cap of โน4.898 Trillion. This makes Vistra the world's 427th 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 17th, 2025 the market cap of Vistra was reported to be: