Omnicom Group (NYSE: OMC) is a holding company whose agencies provide marketing and communications services in the disciplines of advertising, customer relationship management (CRM), strategic media planning and buying, digital and interactive marketing, direct and promotional marketing, public relations (PR) and other specialty communications. Omnicom’s agency networks include BBDO, DDB Worldwide, TBWA Worldwide, Diversified Agency Services (DAS) and Omnicom Media Group (OMG). Its public relations, CRM and specialty communications agencies are managed by its DAS network and include the CRM businesess of Javelin, Proximity Worldwide, Rapp and Targetbase; the PR agency businesses Brodeur Worldwide, Fleishman-Hillard, G+ Europe, Ketchum Inc., Pleon and Porter Novelli and retail/promotional businesses such as Alcone Marketing Group. Omnicom Media Group includes OMD Worldwide, PHD Worldwide and Resolution Media. Omnicom was formed in 1986 from the merger between advertising agency networks DDB, Needham Harper Steers and BBDO.
The Interpublic Group of Companies, Inc. (IPG) (NYSE: IPG) is one of the big four global advertising holding companies (the others being Omnicom, WPP and Publicis). Headquartered in New York City, it has 40,000 employees and reported full−year revenues of US$6 billion for 2009. Its subsidiaries specialize in consumer advertising, interactive marketing, media planning and buying, public relations and other specialized disciplines like sports and event marketing. The company’s current chairman and CEO is Michael I. Roth.
As an advertising holding company, Interpublic sets company-wide financial objectives and corporate strategy, directs collaborative inter-agency programs, establishes fiscal management and operational controls, guides personnel policy, conducts investor relations and initiates, manages and approves mergers and acquisitions. In addition, it provides limited centralized functional services that offer its companies operational efficiencies, including accounting and finance, marketing information retrieval and analysis, legal services, real estate expertise, travel services, recruitment aid, employee benefits and executive compensation management.
Aegis Group plc (LSE: AGS) is a global marketing communications & Market research group company headquartered in London, United Kingdom. It operates in marketing communications with Aegis Media, and market research with Synovate. Listed on the London Stock Exchange(AGS.L), it is capitalised at ca. £1.5 billion. The company employs almost 16,500 staff in over 80 countries.
Aegis media has 5 media companies under the group - Carat, Isobar (digital marketing agency), Vizeum, Posterscope and iProspect.
Their services include market insight and communications strategy, through digital creative execution and website design and build, to media planning and buying, brand tracking and marketing analytics.
Carat is the world’s largest independent media communications company, employing over 10,000 people in 82 countries across the world. Vizeum, the challenger media brand, has a pioneering approach to communications. Isobar is the world’s first global digital marketing network, providing Full Service Digital & Online Marketing services. iProspect, is a leading global digital performance marketing agency focusing on on-line search marketing. Posterscope operates in the out-of-home sector.
Havas (French pronunciation: [avas]; Euronext: HAV) is the second largest advertising group in France and is a "Global advertising and communications services group" and the sixth-largest global advertising and communications group worldwide, operating on the communications consulting market through three main operational divisions:
株式会社博報堂DYホールディングス（はくほうどうディーワイホールディングス、Hakuhodo DY Holdings Incorporated）は、東京都港区に本社を置く、広告代理店の持株会社。
Acxiom is a global interactive marketing services company that uses consumer data, analytics, information technology, data aggregation, data integration, and consulting solutions to help companies conduct direct marketing programs. Acxiom’s interactive capabilities allow marketers to have direct interaction and response with consumers, and these services include direct-mail, e-mail, mobile advertising, display advertising, social media, and Web-site personalization.
It has been described as "one of the biggest companies you've never heard of." In addition to collecting detailed information about people, the company helps marketers anticipate the future needs of consumers, according to the documentary "The Persuaders." As the world's largest processor of consumer data, Acxiom has identified 70 types of consumers with its segmentation product PersonicX.
Forrester Research, the technology research company, considers Acxiom “a technology powerhouse” with deep industry expertise across a multitude of industries. Acxiom has traditionally been known for helping many of the world's largest financial services companies conduct direct marketing campaigns, but now more than 75 percent of its revenue is derived from non-financial services clients. Today, Acxiom is a $1.38 billion-a-year company, representing more than 12 percent of the direct-marketing-services sector’s $11 billion in estimated annual sales.
The corporation has been listed several times by Computerworld and Fortune as one of the 100 best companies to work for in the United States.