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|Traded as||NYSE: OMC
S&P 500 Component
|Headquarters||New York City, United States|
|Key people||John D. Wren, CEO & President|
|Products||Branding & identity
Media planning and buying
|Revenue||$13.9 billion (2011)|
|Operating income||$1.67 billion (2011)|
|Net income||$1.0 billion (2011)|
Omnicom Group Inc. is an American global advertising, marketing and corporate communications holding company, headquartered in New York City. It is the world's top corporate media services conglomerate and one of the "Big Four" agency companies (alongside WPP, Interpublic and Publicis). The company oversees an international network of more than 1,500 agencies and provides services for over 5,000 clients in more than 100 countries worldwide.
As a strategic holding company, Omnicom manages a portfolio of global market leaders; Omnicom's 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 businesses 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.
- 1988 Fred J. Meyer, John Watt and Dennis E. Hewitt join Omnicom.
- 1991 WPP sells its 22% stake in AMV to Omnicom for £7.5m
- 1992 buys Harrison and Star
- 1996 sells 13% holding in Aegis for £45.4m
- 1996 buys Ketchum Communications
- 1996 Omnicom's BBDO Worldwide raises stake in AMV from 28.4% to 29.6%
- 1997 takes stakes in interactive agencies: Agency.com, Organic Online, Razorfish, Interactive Solutions
- 1998 buys Gold Greenless Trott for £143m
- 1998 acquires Russ Reid Company
- 1998 takes 20% of I&S, Japan's eighth-largest ad agency
- 1999 buys Sheppard Associates
- 1999 Direct Partners acquired by Omnicom
- 2001 buys Grizzard Communications for US$91m
- 2001 buys The Washington Group
- 2001 buys Stromberg Consulting
- 2001 buys Corporate Technology Communications
- 2002 buys TPG (inc The Peter Group, AI Advertising and Topak Marketing)
- 2002 buys Aaron Walton Entertainment
- 2005 buys Resolution Media
- 2005 buys Luntz-Maslansky Strategic Research
- 2006 buys Rodgers Townsend
Quick facts 
- Revenue (2008): 13.359 B
- Revenue (2007): 12.694 B
- Revenue (2006): 11.376 B
- Revenue (2004): 9.747 B
- Employees (2008): 68,000
- Chief Executive Officer is John D. Wren, its Chief Financial Officer is Randall Weisenburger.
- Chairman of the Board is Bruce Crawford.
- Corporate headquarters on Madison Avenue in New York City.
- Previous CEOs were Allen Rosenshine (1986 to 1989) and Bruce Crawford (1989 to 1997).
Advertising and media 
- 180 Amsterdam / 180 LA
- AI Advertising
- Total Advertising
- Alcone Marketing Group (Retail/Promotional Marketing)
- Arnell Group
- BBDO Worldwide
- Proximity Worldwide
- DDB Worldwide
- Downtown Partners (Toronto)
- Element 79 Partners
- Goodby Silverstein & Partners
- Mudra Communications
- Martin Williams Advertising
- Merkley + Partners
- Omnicom Media Group
- Organic, Inc.
- Red Urban
- Rodgers Townsend
- TBWA Worldwide
- The Designory
- Tribal DDB
- The Integer Group
- The Kern Organization
- The Peter Group
- Topak Marketing, Inc.
- Zimmerman Advertising
- The Zimmerman Agency
Business to business 
Media planning and buying 
Channel and field marketing 
- CPM Group
- Creative Channel Services
- Marketstar 
- National In-Store
- Pierce Promotions & Event Management
- Unisono Fieldmarketing
Public relations 
- Brodeur Partners
- g+ europe (previously known as GPlus Europe)
- Ketchum Pleon
- Porter Novelli International
- The Zimmerman Agency
Customer relationship management 
- Alcone Marketing Group
- Direct Partners
- GMR Marketing
- The Integer Group
- Javelin Direct
- Unit 7
- RAPP Worldwide
- Russ Reid Co.
- Targetbase Marketing Inc.
- U.S. Marketing & Promotions
Outsourcing services 
Full-service marketing agencies 
- Bernard Hodes Group
- Changing Our World, Inc.
- Cline Davis & Mann
- Corbett Accel Healthcare Group
- Critical Mass Inc.
- Davie-Brown Entertainment
- Dieste, Harmel & Partners
- Digital Jungle
- Doremus & Co.
- Eden Communications Group
- Flashpoint Medica
- Hall & Partners
- Harrison and Star
- Healthcare Consultancy Group 
- Health Science Communications 
- Hornall Anderson
- Hyphen Digital 
- Interbrand Zintzmeyer & Lux
- Kaleidoscope Productions
- Kaleidoscope Youth Marketing
- LIVE Communication
- maslansky + partners
- Millions of Us LLC
- ProEd Communications 
- Radiate Group
- Recruitment Enhancement Services
- Seragini Brand Design
- Shift[disambiguation needed]
- Singer Direct
- Sterling Brands
- The Beanstalk Group
- The Integer Group
- The Scienomics Group 
- The Marketing Arm
- Wolff Olins
- Zócalo Group
Marketing technology 
Market research 
In order of revenue:
- WPP Group PLC (NASDAQ:WPPGY)
- Interpublic Group (NYSE:IPG)
- Publicis Groupe (NYSE:PUB)
- MDC Partners (NASDAQ:MDCA)
- Havas (Delisted from NASDAQ)
The company is governed by a board of directors. Current members of the board are: Robert C. Clark, Leonard S. Coleman, Jr., Errol Cook, Bruce Crawford, Susan Denison, Michael Henning, John Murphy, John R. Purcell, Linda Rice, Gary Roubos, and John D. Wren.
In addition to the board of directors, current management officers are: Bruce Crawford, John D. Wren, Randall J. Weisenburger, Philip J. Angelastro, Serge Dumont, Philip J. George, Dennis E. Hewitt, William Timothy Love, Peter Mead, Asit Mehra, Michael J. O'Brien, Janet Riccio, Rita E. Rodriguez and Tiffany R. Warren
Lobbying for the Russian government 
Omnicom Group's subsidiary Ketchum Inc and its subsidiary GPlus Europe are among the PR agencies used by the Russian government. The Russian government reportedly spends millions on its lobbying efforts. GPlus specializes in recruiting former EU officials and eminent journalists. Gregor Kreuzhuber, who leads the company's pro-Gazprom operations, was previously European Commission industry spokesman. Peter Witt is a retired German deputy ambassador to the EU who was hired by the company. Angus Roxburgh, another GPlus worker, covered the war in Chechnya[disambiguation needed] for the BBC.
- Yahoo! Finance. "Omnicom Group Inc. Company Profile".
- The New York Times. "Advertising's Big Four: It's Their World Now".
- GLOBAL Citizenship and Sustainability Policy
- A Global Leader in Advertising and Marketing Communications
- Mark Tungate. Adland: a global history of advertising. London, Kogan Page Publisher, 2007. ISBN 978-0-7494-4837-0.
- Omnicom Group Announces Agreement to Acquire Abbott Mead Vickers PLC | Business Wire | Find Articles at BNET.com
- Omnicom Digital CEO Jon Nelson: We Were A Trendsetter In The Ad-Shop M&A Game
- Russia's Hired Lobbies in the West. Eurasia Daily Monitor Volume: 6 Issue: 148. August 3, 2009
- Russia hones new image among EU elite. Euobserver 09.02.2009