Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Oceaneering International's quarterly market cap
increased
from Dec. 2025 ($2,388 Mil) to Mar. 2026 ($3,538 Mil) and
increased
from Mar. 2026 ($3,538 Mil) to Jun. 2026 ($4,033 Mil).
Oceaneering International's annual market cap
increased
from Dec. 2023 ($2,145 Mil) to Dec. 2024 ($2,625 Mil) but then
declined
from Dec. 2024 ($2,625 Mil) to Dec. 2025 ($2,388 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. Oceaneering International's Enterprise Value for Today is $5,039 Mil.
Oceaneering International (NYSE:OII) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
Oceaneering International Market Cap Related Terms
Oceaneering International Market Cap Historical Data
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Oil & Gas Equipment & Services subindustry, Oceaneering International's Market Cap, along with its competitors' market caps and Market Cap data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Oceaneering International Market Cap vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Oceaneering International's Market Cap distribution charts can be found below:
* The bar in red indicates where Oceaneering International's Market Cap falls into.
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Oceaneering International (OII) has a Market Cap of $4,849 Mil as of Aug. 03, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Oceaneering International and its competitors. According to the industry distribution chart, Oceaneering International ranks #160 out of 1045 companies in the Oil & Gas industry, placing it in the top 15.3%.
Is Oceaneering International's Market Cap too high?
Oceaneering International's current Market Cap is $4,849 Mil. The Oil & Gas industry median Market Cap is 220.01. Oceaneering International's value of $4,849 Mil is 2104% above this industry median. Based on the distribution chart, Oceaneering International ranks #160 out of 1045 companies in the Oil & Gas industry, which is in the top quartile — a strong position relative to peers. Overall, Oceaneering International has a GF Score™ of 67/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Oceaneering International's Market Cap compare to KGS and AROC?
According to the Oil & Gas industry distribution chart, Oceaneering International ranks #160 out of 1045 companies for Market Cap. This places Oceaneering International in the top 15% of its industry — outperforming the majority of peers. The industry median Market Cap is 220.01. Oceaneering International's value of $4,849 Mil is 2104% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for an Oil & Gas company?
The median Market Cap among Oil & Gas companies is 220.01, based on 1,045 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Oceaneering International's current Market Cap of $4,849 Mil is 2104% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Oceaneering International and its competitors. For the Oil & Gas industry, the median Market Cap is 220.01 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Oceaneering International's current Market Cap is $4,849 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Oceaneering International stock overvalued right now?
Based on GuruFocus' analysis, Oceaneering International (OII) is currently considered Significantly Overvalued. The stock's GF Value™ is $27.83, compared to a current price of $48.72 — trading 75.1% above its estimated fair value. The current Market Cap is $4,849 Mil and 2104% above the Oil & Gas industry median of 220.01. Oceaneering International's overall GF Score™ is 67/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For Oceaneering International (OII), the current Market Cap is $4,849 Mil as of Aug. 03, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Oceaneering International (OII) Overvalued in 2026?
Based on GuruFocus' analysis, Oceaneering International stock appears to be overvalued.
The current stock price of $48.72 is trading 75.1% above its estimated GF Value™ of $27.83.
GuruFocus considers Oceaneering International to be Significantly Overvalued.
Key valuation signals for OII:
Market Cap: $4,849 Mil
GF Value™: $27.83 vs. price of $48.72 (75.1% above fair value)
Industry Position: 2104% above the Oil & Gas median (#160 of 1045)
No single metric tells the full story. See the OII stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Oceaneering International Inc is a provider of engineered services and products and robotic solutions to the offshore energy, defense, aerospace, manufacturing, and entertainment industries. A majority of its products are produced for the offshore oil and gas market. The company's business segments are Integrity Management and Digital Solutions, Subsea Robotics, Manufactured Products, Offshore Projects Group, and Aerospace and Defense Technologies. Maximum revenue is generated from its Subsea Robotics segment, which provides remotely operated vehicles (ROVs) for drill support and vessel-based services, underwater surveys, tooling, and other activities. Geographically, the company derives its key revenue from the United States, followed by Africa, Norway, Brazil, and other regions.
67GF Score
Get the complete analysis for OII
Market Cap is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
OII has been successfully added to your 
