Omnicom Group is a strategic holding company that manages a portfolio of world market leaders. Its companies operate in the disciplines of advertising, marketing services, specialty communications, interactive and digital media and media buying services. The firm has worldwide brands that include BBDO Worldwide, DDB Worldwide and TBWA Worldwide. Its leading United States-based national advertising agencies include Arnell Group, Goodby, Silverstein & Partners, GSD&M, Martin, Williams, Merkley Newman Harty Partners and Zimmerman Partners. Omnicom s diversified agency services consist of a worldwide enterprise of more than 100 companies that provide services in direct marketing consultancy, pub
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