As of January 2026 Trinseo has a market cap of $19.47 Million USD. This makes Trinseo the world's 10169th 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 Jan 14th, 2026 the market cap of Trinseo was reported to be: