LyondellBasell (LYB) - Market capitalization

Market cap: £18.23 Billion

As of April 2026 LyondellBasell has a market cap of £18.23 Billion. This makes LyondellBasell the world's 962th 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 2026

End of year Market Cap

Year	Marketcap	Change
2026	£18.23 B	76.42%
2025	£10.33 B	-46.12%
2024	£19.18 B	-20.74%
2023	£24.20 B	8.32%
2022	£22.34 B	-1.72%
2021	£22.73 B	1.26%
2020	£22.45 B	-6.55%
2019	£24.02 B	-2.38%
2018	£24.61 B	-23.56%
2017	£32.19 B	13.65%
2016	£28.33 B	9.76%
2015	£25.81 B	3.94%
2014	£24.83 B	-7.03%
2013	£26.71 B	32.2%
2012	£20.20 B	67.39%
2011	£12.07 B	-4.05%
2010	£12.58 B

End of Day market cap according to different sources

On Mar 31st, 2026 the market cap of LyondellBasell was reported to be:

£19.50 Billion

by Nasdaq

£19.49 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Celanese CE	£5.27 B	-71.07%	🇺🇸 USA
Dow DOW	£21.68 B	18.92%	🇺🇸 USA
Dupont De Nemours DD	£14.52 B	-20.37%	🇺🇸 USA
Westlake Corporation WLK	£11.16 B	-38.76%	🇺🇸 USA
Sasol SSL	£5.78 B	-68.29%	🇿🇦 South Africa
Braskem BAK	£1.06 B	-94.16%	🇧🇷 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: £18.23 Billion