Market capitalization of Occidental Petroleum (OXY)

Market cap: HK$445.80 Billion

As of September 2026 Occidental Petroleum has a market cap of HK$445.80 Billion. This makes Occidental Petroleum the world's 444th 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	HK$445.80 B	45.94%
2025	HK$305.47 B	-13.65%
2024	HK$353.75 B	-13.56%
2023	HK$409.24 B	-8.51%
2022	HK$447.32 B	111.88%
2021	HK$211.12 B	68.96%
2020	HK$124.95 B	-56.45%
2019	HK$286.96 B	-20.33%
2018	HK$360.20 B	-18.21%
2017	HK$440.40 B	4.33%
2016	HK$422.10 B	5.48%
2015	HK$400.18 B	-16.94%
2014	HK$481.82 B	-17.92%
2013	HK$586.99 B	22.72%
2012	HK$478.33 B	-19.03%
2011	HK$590.78 B	-4.79%
2010	HK$620.51 B	21.16%
2009	HK$512.13 B	36.41%
2008	HK$375.43 B	-24.52%
2007	HK$497.39 B	55.72%
2006	HK$319.42 B	28.23%
2005	HK$249.10 B	38.45%
2004	HK$179.92 B	41.98%
2003	HK$126.72 B	51.16%
2002	HK$83.83 B	8.32%
2001	HK$77.39 B	10.6%
2000	HK$69.97 B	13.21%
1999	HK$61.81 B	35.96%
1998	HK$45.46 B	-41.33%
1997	HK$77.49 B	30.18%
1996	HK$59.52 B

End of Day market cap according to different sources

On Sep 27th, 2026 the market cap of Occidental Petroleum was reported to be:

HK$445.80 Billion

by Nasdaq

HK$445.80 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
APA Corporation APA	HK$117.44 B	-73.66%	🇺🇸 USA
ConocoPhillips COP	HK$1.199 T	169.06%	🇺🇸 USA
EOG Resources EOG	HK$577.40 B	29.52%	🇺🇸 USA
Marathon Oil MRO	HK$125.26 B	-71.90%	🇺🇸 USA
Williams Companies WMB	HK$664.45 B	49.05%	🇺🇸 USA
Exxon Mobil XOM	HK$5.179 T	1,061.75%	🇺🇸 USA
Chevron CVX	HK$3.145 T	605.58%	🇺🇸 USA
Devon Energy DVN	HK$405.92 B	-8.95%	🇺🇸 USA
Hess HES	HK$361.35 B	-18.94%	🇺🇸 USA
Southwestern Energy SWN	HK$61.50 B	-86.20%	🇺🇸 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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