Oak Technology, Inc. Designs, develops and markets high performance multimedia semiconductors and related software to original equipment manufacturers which serve the multimedia personal computer, digital video consumer electronics and digital office equipment markets. (Nasdaq: OAKT). http://www.oaktech.com/

Odetics, Inc. Provides communications equipment for the television broadcast, video security, telecommunications and intelligent transportation systems markets. (Nasdaq: ODETA). http://www.odetics.com/

Occidental Petroleum Corp. Produces oil and gas, manufactures chemical products with interests in basic chemicals, vinyls, petrochemicals, and performance products and offers energy trading and consulting. Based in Los Angeles, CA 90024-4201, USA. (NYSE:OXY) http://www.oxy.com/

Oilgear Company (The) Manufactures and distributes components for industrial machinery and for industrial processes, including hydraulic pumps, valves, meters, high pressure intensifiers, controls, cylinders and motors. (Nasdaq: OLGR). http://WWW.OILGEAR.COM/

Oki Electric Industry Co., Ltd. Portfolio includes information systems like airport check-in or ticketing, telecommunication systems like optical networks or ADSL and electronic devices, e.g. controllers or memory. Based in Tokyo, Japan. (TSE:6703) http://www.oki.com/

OGE Energy Corp. Energy supplying and trading company, which operates more than 10.000 miles of gas pipeline in Oklahoma and Arkansas. Based in Oklahoma City, OK 73101-0321, USA.(NYSE:OGE) http://www.oge.com/

Olicom A/S Invests in Scandinavian start-up's within information and communication technology sector. Based in Virum, DK-2830, Denmark.(Nasdaq:OLCMF) http://www.olicom.dk/

Olympic Steel, Inc. Processes and distributes flat-rolled carbon, stainless and tubular steel products. (Nasdaq: ZEUS). http://www.olysteel.com/

Opinion Research Corp. Offers business services that somehow include public opinion like global brand management, survey and market research as well as call center outsourcing. Based in Princeton, NJ 08542, USA. (NASDAQ:ORCI) http://www.opinionresearch.com/

Old Mutual plc United Kingdom based financial services group, with an international portfolio of activities in life assurance, asset management, banking and general insurance. Features financial and shareholder data, and news. (London: OML) http://www.oldmutual.co.uk/

Orbital Engine Corp., Ltd Offers engineering services, especially regarding in-house direct fuel injected internal combustion engines. Based in Balcatta, 6021, Western Australia. (NYSE:OE; ASX:OEC) http://www.orbeng.com.au/

Orphan Medical, Inc. Acquires, develops and markets products of high medical value intended to address inadequately treated or uncommon diseases. (Nasdaq: ORPH). http://www.orphan.com/

O'Reilly Automotive, Inc. Operates stores which sell new and remanufactured automotive hard parts such as alternators, starters, fuel pumps, water pumps, brake shoes and pads, maintenance items such as oil, antifreeze, fluids, engine additives and appearance products, accessories such as floor mats and seat covers, and autobody paint and related materials, automotive tools and professional service equipment. (Nasdaq: ORLY). http://www.oreillyauto.com/

Osicom Technologies, Inc. Designs, manufactures and markets integrated networking and bandwidth aggregation products for enhancing performance of data and telecommunications intra-city networks. (Nasdaq: FIBR). http://www.osicom.com/

Outback Steakhouse, Inc. Operates restaurants throughout the USA and worldwide in joint ventures. Brands include "Outback Steakhouse", "Carrabba's Italian Grills" and "Lee Roy Selmon's". Based in Tampa, FL 33607, USA. (NYSE:OSI) http://www.outbacksteakhouse.com/

Outlook Group Corp. Offers specialty printing, converting and packaging services. (Nasdaq: OUTL). http://www.outlookgroup.com/

Owens and Minor, Inc. Supplier of a wide array of medical products backed up with supply chain consulting and e-business solutions for healthcare customers. Based in Richmond, VA 23261-7626, USA. (NYSE:OMI) http://www.owens-minor.com/

Oxis International, Inc. Develops and sells therapeutic and diagnostic products and medical instruments to diagnose, treat and prevent diseases of oxidative stress. (Nasdaq: OXIS). http://www.oxis.com/

Obie Media Corporation Markets advertising space on outdoor advertising displays, primarily on transit vehicles and outdoor advertising displays, in the United States and Canada. (Nasdaq: OBIE). http://www.OBIE.COM/

Oglebay Norton Company Operates fleet of vessels which transport iron ore, coal, limestone and other dry cargos on the Great Lakes. (Nasdaq: OGLE). http://www.oglebaynorton.com/