Market capitalization of Occidental Petroleum (OXY)

Market cap: €49.99 Billion

As of August 2026 Occidental Petroleum has a market cap of €49.99 Billion. This makes Occidental Petroleum the world's 449th 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 Occidental Petroleum from 1996 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	€49.99 B	49.58%
2025	€33.42 B	-23.67%
2024	€43.78 B	-7.62%
2023	€47.40 B	-11.19%
2022	€53.37 B	123.24%
2021	€23.90 B	82.43%
2020	€13.10 B	-60.16%
2019	€32.89 B	-18.2%
2018	€40.20 B	-14.41%
2017	€46.97 B	-9.22%
2016	€51.74 B	9.59%
2015	€47.22 B	-7.55%
2014	€51.07 B	-6.82%
2013	€54.81 B	17.49%
2012	€46.65 B	-20.35%
2011	€58.57 B	-2.29%
2010	€59.94 B	30.03%
2009	€46.10 B	32.65%
2008	€34.75 B	-20.46%
2007	€43.69 B	40.37%
2006	€31.12 B	14.76%
2005	€27.12 B	58.91%
2004	€17.06 B	31.44%
2003	€12.98 B	26.27%
2002	€10.28 B	-8.5%
2001	€11.23 B	18.01%
2000	€9.52 B	20.46%
1999	€7.90 B	59.9%
1998	€4.94 B	-41.32%
1997	€8.42 B	29.94%
1996	€6.48 B

End of Day market cap according to different sources

On Aug 13th, 2026 the market cap of Occidental Petroleum was reported to be:

€49.99 Billion

by Nasdaq

€49.99 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
APA Corporation APA	€12.14 B	-75.70%	🇺🇸 USA
ConocoPhillips COP	€129.65 B	159.35%	🇺🇸 USA
EOG Resources EOG	€65.27 B	30.58%	🇺🇸 USA
Marathon Oil MRO	€13.84 B	-72.31%	🇺🇸 USA
Williams Companies WMB	€77.43 B	54.89%	🇺🇸 USA
Exxon Mobil XOM	€565.25 B	1,030.72%	🇺🇸 USA
Chevron CVX	€336.11 B	572.36%	🇺🇸 USA
Devon Energy DVN	€42.32 B	-15.34%	🇺🇸 USA
Hess HES	€39.93 B	-20.12%	🇺🇸 USA
Southwestern Energy SWN	€6.79 B	-86.40%	🇺🇸 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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