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{, style="background:transparent;" !Stock name !Symbol !Country of origin , ---- , Oaktree Capital Group, LLC , , US , ---- ,

Occidental Petroleum Corporation Occidental Petroleum Corporation (often abbreviated Oxy in reference to its ticker symbol and logo) is an American company engaged in hydrocarbon exploration in the United States, and the Middle East as well as petrochemical manufacturing in the ...

, , US , ---- , Oceaneering International Inc. , , US , ---- , Och-Ziff Capital Management Group LLC , , US , ---- , OCI Partners LP , , US , ---- , OCI Resources LP , , US , ---- ,

Ocwen Financial Corporation Ocwen Financial Corporation is a provider of residential and commercial mortgage loan servicing, special servicing, and asset management services, which has been described as " debt collectors, collecting monthly principal and interest from homeow ...

, , US , ---- , Office Depot Inc. , , US , ---- ,

OFG Bancorp OFG Bancorp, founded in 1964, more commonly known as OFG or Oriental Bank, is a financial holding company located in San Juan, Puerto Rico. OFG offers a wide range of retail and commercial banking, lending and wealth management products, servic ...

, , US , ---- , OFG Bancorp , ,

Puerto Rico Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and unincorporated ...

, ---- , OFG Bancorp , ,

, ---- , OGE Energy Corp. , , US , ---- , Oi S.A. , ,

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

, ---- , Oi S.A. , ,

, ---- , Oil Dri Corporation of America , , US , ---- , Oil States International, Inc , , US , ---- , Oiltanking Partners, L.P. , , US , ---- , Old Republic International Corporation , , US , ---- ,

Olin Corporation Olin Corporation is an American manufacturer of ammunition, chlorine, and sodium hydroxide. The company traces its roots to two companies, both founded in 1892: Franklin W. Olin's Equitable Powder Company and the Mathieson Alkali Works. Olin che ...

, , US , ---- , OM Group, Inc. , , US , ---- , Omega Healthcare Investors, Inc , , US , ---- , Omega Protein Corporation , , US , ---- , Omnicare Inc. , , US , ---- , Omnicare Capital Trust I , , US , ---- , Omnicare Capital Trust II , , US , ---- , Omnicom Group Inc. , , US , ---- , OMNOVA Solutions Inc. , , US , ---- , On Assignment, Inc. , , US , ---- , ONE Gas, Inc. , , US , ---- , One Liberty Properties, Inc. , , US , ---- , OneBeacon Insurance Group, LTD , , US , ---- , ONEOK, Inc. , , US , ---- , Oneok Partners, L.P. , , US , ---- , OPKO Health, Inc. , , US , ---- , Oppenheimer Holdings Inc. , , US , ---- ,

Oracle Corporation Oracle Corporation is an American multinational computer technology corporation headquartered in Austin, Texas. In 2020, Oracle was the third-largest software company in the world by revenue and market capitalization. The company sells da ...

, , US , ---- , Orange S.A. , ,

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

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Orbital Sciences Corporation Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other governmen ...

, , US , ---- , Orient Express Hotels Ltd. , , US , ---- , Orion Engineered Carbons S.A. , ,

Luxembourg Luxembourg ( ; lb, Lëtzebuerg ; french: link=no, Luxembourg; german: link=no, Luxemburg), officially the Grand Duchy of Luxembourg, ; french: link=no, Grand-Duché de Luxembourg ; german: link=no, Großherzogtum Luxemburg is a small lan ...

, ---- , Orion Marine Group, Inc. , , US , ---- ,

Orix Corporation , styled as ORIX, is a Japanese diversified financial services group headquartered in Minato, Tokyo, and Osaka, Japan. ORIX offers leasing, lending, rentals, life insurance, real estate financing and development, venture capital, investment a ...

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Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...

, ---- , Ormat Technologies, Inc. , , US , ---- ,

Oshkosh Corporation Oshkosh Corporation, formerly Oshkosh Truck, is an American industrial company that designs and builds specialty trucks, military vehicles, truck bodies, airport fire apparatus, and access equipment. The corporation also owns Pierce Manufac ...

, , US , ---- , Owens & Minor Inc. , , US , ---- ,

Owens Corning Owens Corning is an American company that develops and produces insulation, roofing, and fiberglass composites and related materials and products. It is the world's largest manufacturer of fiberglass composites. It was formed in 1935 as a partn ...

, , US , ---- , Owens Illinois Inc. , , US , ---- , Oxford Industries Inc. , , US , ---- , Oxford Resource Partners, LP , {{nyse1, OXF , US , ---- O