As of October 2026 Six Flags has a market cap of $1.09 Billion USD. This makes Six Flags the world's 6101th 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 Sep 30th, 2026 the market cap of Six Flags was reported to be: