Westlake Corporation (WLK) - Market capitalization

Market cap: HK$69.24 Billion

As of September 2026 Westlake Corporation has a market cap of HK$69.24 Billion. This makes Westlake Corporation the world's 2223th 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 Westlake Corporation from 2004 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	HK$69.24 B	-5.93%
2025	HK$73.60 B	-35.54%
2024	HK$114.18 B	-18.48%
2023	HK$140.07 B	37.08%
2022	HK$102.17 B	5.55%
2021	HK$96.80 B	19.82%
2020	HK$80.79 B	15.19%
2019	HK$70.14 B	5.37%
2018	HK$66.56 B	-38.05%
2017	HK$107.45 B	92%
2016	HK$55.96 B	2.08%
2015	HK$54.82 B	-12.94%
2014	HK$62.96 B	-0.21%
2013	HK$63.10 B	53.45%
2012	HK$41.12 B	97.56%
2011	HK$20.81 B	-7.13%
2010	HK$22.41 B	75.74%
2009	HK$12.75 B	54.32%
2008	HK$8.26 B	-14.76%
2007	HK$9.69 B	-39.13%
2006	HK$15.92 B	9.51%
2005	HK$14.54 B	-13.64%
2004	HK$16.84 B

End of Day market cap according to different sources

On Sep 19th, 2026 the market cap of Westlake Corporation was reported to be:

HK$69.24 Billion

by Nasdaq

HK$69.24 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Albemarle ALB	HK$102.66 B	48.27%	🇺🇸 USA
Celanese CE	HK$39.09 B	-43.54%	🇺🇸 USA
Dow DOW	HK$162.79 B	135.11%	🇺🇸 USA
Eastman Chemical EMN	HK$58.91 B	-14.92%	🇺🇸 USA
Phillips 66 PSX	HK$859.01 B	1,140.61%	🇺🇸 USA
Exxon Mobil XOM	HK$5.275 T	7,518.32%	🇺🇸 USA
Honeywell HON	HK$513.30 B	641.32%	🇺🇸 USA
Olin Corporation OLN	HK$15.05 B	-78.25%	🇺🇸 USA
Huntsman Corporation HUN	HK$12.50 B	-81.94%	🇺🇸 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 Westlake Corporation (WLK)

Market cap: HK$69.24 Billion