BHP Billiton is a global resources company. Co. operates under a Dual Listed Company (DLC) structure, which consists of the BHP Billiton Limited Group and the BHP Billiton Plc Group, operating as a single economic entity. As of June 30 2017, Co. operated four reportable segments: Petroleum, which is involved in the exploration, development and production of oil and gas; Copper, which is involved in the mining of copper, silver, lead, zinc, molybdenum, uranium and gold; Iron ore, which is involved in the mining of iron ore; and Coal, which is involved in the mining of metallurgical coal and thermal (energy) coal.

Publicis is holding company. Through its subsidiaries, Co. is engaged in marketing, communication and digital transformation. Co. designs a customized package of services to meet each client's particular needs through a holistic and global approach. In addition, Co. provides financial markets with information concerning the relative size of each of the different business sectors for the sole purpose of allowing sector comparisons. Co.'s principal activities comprise four main categories: Digital, Advertising, Specialized Agencies and Marketing Services (SAMS) and Media.

Teleperformance is engaged in outsourced customer experience management. Co. delivers integrated solutions to corporations and administrative bodies worldwide to manage all aspects of the customer-relations cycle on their behalf. Co.'s activities include four core business areas: customer care (these are services provided as part of customer service management); technical support; debt collection; and business information and marketing actions. As of Dec. 31, 2013, Co. had approximately 110,000 computerized workstations across 46 countries. Co.'s client includes industries like Telecoms, Internet, Financial services, Technology/media, Insurance, Government sector and Utilities.

Veolia Environnement provides environmental management services to public authorities, industrial and commercial services customers, and individuals worldwide. These services include the supply of water, the treatment and recovery of municipal or industrial effluent, waste collection, processing and recycling, the supply of heating and cooling services and the optimization of industrial processes. Co.'s business operations are conducted through three divisions, each specializing in a single business sector: Veolia Eau (Water), Veolia Energie (Dalkia, Energy Services) and Veolia Proprete (Environmental Services).

WPP is a holding company. Through its subsidiaries, Co. is a communications services organization providing national and multinational clients a range of communications services. Co. is organized into four operating segments: Advertising and Media Investment Management; Data Investment Management; Public Relations and Public Affairs; and Branding and Identity, Healthcare and Specialist Communications. This last reportable segment includes WPP Digital and direct, digital, promotional & relationship marketing.