Omnicom Group

The Omnicom Group (NYSE:OMC (http://finance.yahoo.com/q?s=omc)) is the world's largest advertising agency holding company in terms of revenue (number two is WPP Group plc). Its major holdings include the advertising agency networks BBDO, TBWA Worldwide, and DDB Worldwide. Its portfolio of companies also includes public relations, lobbying, marketing services, interactive design, and media buying services.

Omnicom's marketing and public relations agency holdings are managed by its Diversified Agency Services division. Among Omnicom's PR agency holdings are Fleishman-Hillard, Ketchum Inc., and Porter Novelli.

Omnicom was formed in 1986 from the merger between advertising agency networks DDB Needham and BBDO. Sometimes referred to as the "Big-Bang" merger, it was spearheaded by BBDO Worldwide CEO Allen Rosenshine, who was responding to competitive threats from other large advertising agency comglomerates. In 1993 Omnicom acquired TBWA Worldwide, a major advertising agency network.

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Competition

In order of revenue

Timeline

  • 1986 Omnicom established
  • 1991 WPP sells its 22% stake in AMV to Omnicom for £7.5m
  • 1993 Omnicom invests in ailing UK group Aegis
  • 1996 Omnicom sells 13% holding in Aegis for £45.4m
  • 1996 Omnicom's BBDO Worldwide raises stake in AMV from 28.4% to 29.6%
  • 1998 takes 20% of I&S, Japan's eighth-largest ad agency
  • 2002 buys TPG (inc The Peter Group, AI Advertising and Topak Marketing)

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