The Ultimate List of Agency Holding Companies & Their Affiliates

September 11, 2024

Updated September 2024: Navigating the advertising ecosystem is complicated. Agency-holding companies expand and acquire entities at a rapid pace. If you’re targeting agencies, it’s important to know which house they’re under, which brand accounts they’re responsible for, and who the decision-makers are. Here’s a cheat sheet to understand the many agency/brand relationships, how advertisers place their ads, and the technologies they’re using.

We’re expanding beyond the “big four” by selecting the seven most profitable agency networks in 2024. Check out our ultimate list of agency-holding companies and their affiliates (with at least $5 million in revenue) below.

1) Omnicom Group

Recognized as one of the world’s largest advertising agencies, Omnicom employs over 77,000 people across more than 100 countries. The company’s extensive global reach and diverse service offerings make it a major player in the advertising industry.

Q2 2024 revenue: $3.85B
Primary headquarters: 280 Park Avenue, New York, New York 10017
Notable clients: Apple, AT&T, PepsiCo, McDonald’s, Nissan, Pfizer, Unilever, and Volkswagen (Full list in Winmo)
Agency disciplines: Full service/integrated, creative/advertising, public relations, multicultural, media buying and planning, direct/relationship, shopper, digital, branding, promotions
Agencies: Full details here

2) Publicis Groupe

Publicis offers various services, including digital and traditional advertising, media planning and buying, public relations, and customer relationship management. Their technological platform, Vivaki, leverages partnerships with tech giants like Microsoft and Google to provide targeted advertising across multiple networks.

Q2 2024 revenue: $3.74B
Primary headquarters: 133, avenue des Champs-Elysées, Paris, Ile de France 75008, France
Notable clients: Google Chrome, Dodge, Humira, Marriott Bonvoy, Samsung, ESPN, Advil, Miller Lite, Bank of America, Dawn, and Allstate (Full list in Winmo)
Agency disciplines: Full service/integrated, creative/advertising, public relations, media buying and planning, digital, multicultural, direct/relationship
Agencies: Full details here

3) WPP

WPP operates across communications, experience, commerce, and technology, employing approximately 130,000 people in over 100 countries. This makes WPP the largest advertising agency group in the world, focusing on a broad spectrum of marketing and communications services.

Q1 2024 revenue: $3.51B
Primary headquarters: Sea Containers House, 18 Upper Ground, London SE1 9GL, United Kingdom
Notable clients: Ford, Google, Unilever, Coca-Cola, Dell, Lidi US, Wendy’s, Uber, Sprite, Johnson & Johnson, Victoria’s Secret, HSBC, Sharpie, Volkswagen, and FoodSaver (Full list in Winmo)
Agency disciplines: Media buying and planning, digital, full service/integrated, creative/advertising, public relations, market research, entertainment, mobile, branding, OOH advertising, event & sponsorships
Agencies: Full details here

4) Interpublic Group of Companies

With a global workforce exceeding 57,000 employees, IPG Mediabrands stands out with over 13,000 media and marketing specialists across more than 130 countries. Mediabrands caters to a diverse portfolio of renowned clients across various industries, including automotive, entertainment, financial services, and retail.

Q2 2024 revenue: $2.67B
Primary headquarters: 909 Third Avenue, New York, NY 10022, USA
Notable clients: Accenture, American Express, CVS, Degree, General Mills, GoPro, Henkel, Johnson & Johnson, Levi Strauss & Co, Mattel, Netflix, and Upfield (Full list in Winmo)
Agency disciplines: Creative/advertising, full service/integrated, direct/relationship, media buying and planning, digital, promotions, public relations, customer experience, design, multicultural, production
Agencies: Full details here

5) Dentsu Inc.

Recently, Dentsu launched Dentsu Anime Solutions to strengthen its footprint in the anime industry. A unique company tradition since 1925 involves new employees and promoted executives climbing Mount Fuji every July, symbolizing their ability to conquer any challenge.

Dentsu Q1 2024 revenue: $1.838 B
Primary headquarters: 1 Chome-8-1 Higashishinbashi, Minato City, Tokyo 105-0021, Japan
Notable clients: Jaguar Land Rover, LVMH, Kao Corporation, Netflix, American Express, Diageo, Burger King and 7-Eleven (Full list in Winmo)
Agency disciplines: Creative/advertising, SEO/SEM, digital, event and sponsorship marketing, media buying and planning
Agencies: Full details here

6) Havas

Havas provides various services, including digital advertising, media planning, public relations, corporate communications, and innovation consulting. The company’s subsidiaries offer communication consulting through traditional advertising media, media buying, and various marketing services such as sales promotion, healthcare communications, and interactive communications.

Q2 2024 revenue: $1.189B
Primary headquarters: 29/30 Quai de Dion Bouton, Puteaux, 92817, France
Notable clients: Sanofi, Fidelity, Proximo, PNC Bank, Amazon Web Services, Allegra, Dolce & Gabbana USA, Goodyear, and TripAdvisor (Full list in Winmo)
Agency disciplines: Creative/advertising, digital, media buying and planning, full service/integrated, direct/relationship, PR
Agencies: Full details here

7) Stagwell

Founded in 2015 by Mark Penn with a $250 million investment from former Microsoft CEO Steve Ballmer, is a digital-first global marketing network known for delivering scalable, seamless solutions through a unique combination of culture-moving creativity and leading-edge technology.

Q1 2024 revenue: $670m
Primary headquarters: One World Trade Center, 65th Floor New York, NY 10007
Notable clients: Amazon, Budweiser, Google, Amazon, TikTok, E*Trade, Carnival, Diageo, General Mills, Galen College of Nursing (Full list in Winmo)
Agency disciplines: Full service/Integrated, Creative/Advertising, public relations, direct/relationship, digital, branding, market research, media buying & planning
Agencies: Full details here