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Offshore Oil & Gas Equipment and Service Companies

U.S. Exchanges

List of Publicly Traded Offshore Oil & Gas Equipment and Service Companies Listed on Major U.S. Exchanges

The companies on this list are large, mid and small-sized companies that provide equipment, products and services to the offshore oil & gas industry. Examples of some of the more common types of companies on this list include offshore contract drilling service providers, manufactured offshore parts and equipment suppliers and companies that operate offshore service vessels.

These companies are categorized by the following market capitalization levels:

  • Large-Cap Stocks: Market cap over ten billion dollars
  • Mid-Cap Stocks: Market cap over two billion dollars but under ten billion
  • Small-Cap Stocks: Market cap over 300 million dollars and under two billion dollars
  • Micro-Cap Stocks: Market cap over 50 million and under 300 million dollars
  • Nano-Cap Stocks: Market cap under 50 million

We update this list at the beginning of each month. It is possible that companies will fluctuate above or below these levels between updates.


Additional publicly traded energy companies and energy categories can be accessed through the link below:

List of Energy Companies

A comparison widget that shows trend, earnings per share (EPS), P/E ratio and beta for each of the companies on this list can be accessed through the link below.

Offshore Oil and Gas Equipment and Services Industry Comparison Widget

Select the company’s link to access charts, news links and company website and social media information.

Offshore Oil and Gas Equipment and Services: Large-Cap Stocks

Loews Corporation (L) (Diversified company; owns percentage of Diamond Offshore Drilling)

Offshore Oil and Gas Equipment and Services: Mid-Cap Stocks

Diamond Offshore Drilling, Inc. (DO) (Contract offshore drilling services)

Dril-Quip, Inc. (DRQ) (Offshore drilling equipment)

ENSCO plc (ESV) (Offshore service vessels)

FMC Technologies, Inc. (FTI) (Offshore equipment)

Oceaneering International, Inc. (OII) (Offshore equipment and services)

Transocean Ltd. (RIG) (Switzerland: Contract offshore drilling services)

Offshore Oil and Gas Equipment and Services: Small-Cap Stocks

Helix Energy Solutions Group, Inc. (HLX) (Offshore specialty services)

McDermott International, Inc. (MDR) (Offshore engineering, procurement, construction and installation services)

Noble Corporation (NE) (Contract offshore drilling services)

Rowan Companies (RDC) (Contract offshore drilling services)

Seadrill Ltd. (SDRL) (Contract offshore drilling services)

Seadrill Partners LLC (SDLP) (United Kingdom: Contract offshore drilling services)

SEACOR Holdings, Inc. (CKH) (Inland rivers services, shipping services, storage and handling)

Offshore Oil and Gas Equipment and Services: Micro-Cap Stocks

Ocean Rig UDW Inc. (ORIG) (Cyprus: Contract offshore drilling services)

Gulf Island Fabrication, Inc. (GIFI) (Fabrication of specialized structures and vessels)

Hornbeck Offshore Services (HOS) (Offshore service vessels)

Nordic American Offshore Ltd. (NAO) (Platform supply vessels)

Tidewater Inc. (TDW) (Offshore service vessels)

Related Links:

Publicly Traded Companies by Sector and Industry

List of Energy ETFs