Trinseo (TSE) - Market capitalization

Market cap: £8.62 Million

As of February 2026 Trinseo has a market cap of £8.62 Million. This makes Trinseo the world's 10280th 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.

Market cap history of Trinseo from 2014 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	£8.62 M	-41.35%
2025	£14.69 M	-89.92%
2024	£0.14 B	-36.92%
2023	£0.23 B	-64.78%
2022	£0.65 B	-56.5%
2021	£1.50 B	4.62%
2020	£1.44 B	30.36%
2019	£1.10 B	-26.24%
2018	£1.50 B	-36.09%
2017	£2.34 B	9.4%
2016	£2.14 B	131.19%
2015	£0.92 B	69.81%
2014	£0.54 B

End of Day market cap according to different sources

On Feb 17th, 2026 the market cap of Trinseo was reported to be:

£7.69 Million

by Nasdaq

£8.62 Million

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Celanese CE	£4.49 B	52,078.55%	🇺🇸 USA
Dow DOW	£16.61 B	192,625.96%	🇺🇸 USA
Westlake Corporation WLK	£9.24 B	107,164.23%	🇺🇸 USA
Kraton KRA	£1.10 B	12,709.04%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of Trinseo (TSE)

Market cap: £8.62 Million