LyondellBasell (LYB) - Market capitalization

Market cap: C$26.65 Billion

As of September 2026 LyondellBasell has a market cap of C$26.65 Billion. This makes LyondellBasell the world's 1204th 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	C$26.65 B	39.84%
2025	C$19.06 B	-44.82%
2024	C$34.55 B	-15.53%
2023	C$40.90 B	11.5%
2022	C$36.68 B	-6.21%
2021	C$39.11 B	0.23%
2020	C$39.02 B	-5.16%
2019	C$41.14 B	-3.31%
2018	C$42.55 B	-22.21%
2017	C$54.71 B	16.46%
2016	C$46.97 B	-11.46%
2015	C$53.05 B	18.26%
2014	C$44.86 B	-4.34%
2013	C$46.90 B	44.43%
2012	C$32.47 B	70.16%
2011	C$19.08 B	-1.7%
2010	C$19.41 B

End of Day market cap according to different sources

On Sep 29th, 2026 the market cap of LyondellBasell was reported to be:

C$26.66 Billion

by Nasdaq

C$26.65 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Celanese CE	C$6.98 B	-73.82%	🇺🇸 USA
Dow DOW	C$28.29 B	6.12%	🇺🇸 USA
Dupont De Nemours DD	C$24.92 B	-6.52%	🇺🇸 USA
Westlake Corporation WLK	C$11.49 B	-56.90%	🇺🇸 USA
Sasol SSL	C$12.59 B	-52.76%	🇿🇦 South Africa
Braskem BAK	C$0.45 B	-98.29%	🇧🇷 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: C$26.65 Billion