Market capitalization of Oceaneering International (OII)

Market cap: NZ$4.69 Billion

As of January 2026 Oceaneering International has a market cap of NZ$4.69 Billion. This makes Oceaneering International the world's 4197th 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 Oceaneering International from 1996 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	NZ$4.69 B	12.34%
2025	NZ$4.18 B	-7.43%
2024	NZ$4.51 B	33.23%
2023	NZ$3.38 B	22.72%
2022	NZ$2.76 B	67.14%
2021	NZ$1.65 B	51.03%
2020	NZ$1.09 B	-50.04%
2019	NZ$2.19 B	23.22%
2018	NZ$1.77 B	-39.24%
2017	NZ$2.92 B	-26.75%
2016	NZ$3.99 B	-25.55%
2015	NZ$5.36 B	-28.26%
2014	NZ$7.47 B	-28.01%
2013	NZ$10.38 B	47.2%
2012	NZ$7.05 B	10.5%
2011	NZ$6.38 B	23.64%
2010	NZ$5.16 B	16.72%
2009	NZ$4.42 B	61.76%
2008	NZ$2.73 B	-43.51%
2007	NZ$4.84 B	57.85%
2006	NZ$3.06 B	57.29%
2005	NZ$1.95 B	44.42%
2004	NZ$1.35 B	28.58%
2003	NZ$1.05 B	-9.3%
2002	NZ$1.15 B	-8.53%
2001	NZ$1.26 B	25.29%
2000	NZ$1.01 B	55.11%
1999	NZ$0.65 B	1.12%
1998	NZ$0.64 B	-17.37%
1997	NZ$0.77 B	48.44%
1996	NZ$0.52 B

End of Day market cap according to different sources

On Jan 13th, 2026 the market cap of Oceaneering International was reported to be:

NZ$4.67 Billion

by Nasdaq

NZ$4.69 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Helix Energy Solutions HLX	NZ$1.83 B	-60.89%	🇺🇸 USA
Tetra Technologies TTI	NZ$2.43 B	-48.17%	🇺🇸 USA
Halliburton HAL	NZ$48.41 B	931.06%	🇺🇸 USA
Forum Energy Technologies FET	NZ$0.84 B	-82.01%	🇺🇸 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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