LyondellBasell (LYB) - Market capitalization

Market cap: NZ$38.94 Billion

As of April 2026 LyondellBasell has a market cap of NZ$38.94 Billion. This makes LyondellBasell the world's 1052th 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	NZ$38.94 B	62.04%
2025	NZ$24.03 B	-43.7%
2024	NZ$42.69 B	-12.46%
2023	NZ$48.76 B	14.52%
2022	NZ$42.58 B	-5.23%
2021	NZ$44.93 B	5.93%
2020	NZ$42.41 B	-9.33%
2019	NZ$46.78 B	0.44%
2018	NZ$46.57 B	-23.98%
2017	NZ$61.27 B	21.42%
2016	NZ$50.46 B	-9.7%
2015	NZ$55.88 B	13.26%
2014	NZ$49.34 B	-7.97%
2013	NZ$53.61 B	35.06%
2012	NZ$39.69 B	65.14%
2011	NZ$24.03 B	-4.51%
2010	NZ$25.17 B

End of Day market cap according to different sources

On Apr 21st, 2026 the market cap of LyondellBasell was reported to be:

NZ$38.95 Billion

by Nasdaq

NZ$38.94 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Celanese CE	NZ$12.43 B	-68.07%	🇺🇸 USA
Dow DOW	NZ$46.57 B	19.59%	🇺🇸 USA
Dupont De Nemours DD	NZ$32.34 B	-16.95%	🇺🇸 USA
Westlake Corporation WLK	NZ$25.02 B	-35.74%	🇺🇸 USA
Sasol SSL	NZ$13.71 B	-64.79%	🇿🇦 South Africa
Braskem BAK	NZ$2.45 B	-93.71%	🇧🇷 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: NZ$38.94 Billion