LyondellBasell (LYB) - Market capitalization

Market cap: €11.91 Billion

As of December 2025 LyondellBasell has a market cap of €11.91 Billion. This makes LyondellBasell the world's 1504th 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 LyondellBasell from 2010 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	€11.91 B	-48.49%
2024	€23.13 B	-17.06%
2023	€27.89 B	10.69%
2022	€25.20 B	-7%
2021	€27.10 B	8.91%
2020	€24.88 B	-11.52%
2019	€28.12 B	2.98%
2018	€27.31 B	-24.7%
2017	€36.26 B	9.13%
2016	€33.23 B	-5%
2015	€34.98 B	10.05%
2014	€31.78 B	-0.36%
2013	€31.90 B	29.23%
2012	€24.68 B	70.89%
2011	€14.44 B	-1.06%
2010	€14.60 B

End of Day market cap according to different sources

On Dec 4th, 2025 the market cap of LyondellBasell was reported to be:

€11.91 Billion

by Nasdaq

€11.91 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Westlake Chemical WLK	€7.48 B	-37.24%	🇺🇸 USA
Sasol SSL	€3.35 B	-71.82%	🇿🇦 South Africa
Dupont De Nemours DD	€14.31 B	20.09%	🇺🇸 USA
Celanese CE	€3.74 B	-68.60%	🇺🇸 USA
Dow DOW	€13.94 B	17.01%	🇺🇸 USA
Braskem BAK	€1.04 B	-91.23%	🇧🇷 Brazil

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 LyondellBasell (LYB)

Market cap: €11.91 Billion