Westlake Corporation (WLK) - Market capitalization

Market cap: £7.23 Billion

As of June 2026 Westlake Corporation has a market cap of £7.23 Billion. This makes Westlake Corporation the world's 2083th 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	£7.23 B	3.04%
2025	£7.02 B	-40.07%
2024	£11.72 B	-16.74%
2023	£14.07 B	30.23%
2022	£10.80 B	17.53%
2021	£9.19 B	20.29%
2020	£7.64 B	11.33%
2019	£6.86 B	2.56%
2018	£6.69 B	-34.19%
2017	£10.17 B	73.99%
2016	£5.84 B	22.54%
2015	£4.77 B	-8.46%
2014	£5.21 B	5.7%
2013	£4.93 B	50.3%
2012	£3.28 B	90.36%
2011	£1.72 B	-7.58%
2010	£1.86 B	83.55%
2009	£1.01 B	39.29%
2008	£0.72 B	16.57%
2007	£0.62 B	-40.13%
2006	£1.04 B	-3.89%
2005	£1.08 B	-3.64%
2004	£1.12 B

End of Day market cap according to different sources

On Jun 29th, 2026 the market cap of Westlake Corporation was reported to be:

£7.24 Billion

by Nasdaq

£7.23 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Albemarle ALB	£11.56 B	59.80%	🇺🇸 USA
Celanese CE	£3.80 B	-47.39%	🇺🇸 USA
Dow DOW	£15.21 B	110.20%	🇺🇸 USA
Eastman Chemical EMN	£5.78 B	-20.07%	🇺🇸 USA
Phillips 66 PSX	£52.75 B	628.93%	🇺🇸 USA
Exxon Mobil XOM	£426.38 B	5,790.96%	🇺🇸 USA
Honeywell HON	£54.56 B	653.90%	🇺🇸 USA
Olin Corporation OLN	£1.79 B	-75.21%	🇺🇸 USA
Huntsman Corporation HUN	£1.45 B	-79.94%	🇺🇸 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: £7.23 Billion