Horizon Media: The Largest Independent Media Agency in the U.S.
Horizon Media is the largest independent media agency in the United States and the largest privately held media agency in the world. Founded in 1989 by Bill Koenigsberg, the agency is headquartered in New York with major offices in Los Angeles and Toronto. As of 2026, Horizon Media oversees more than $8.5 billion in client investments and employs over 2,300 people.
Horizon's positioning is built on a single thesis Koenigsberg has repeated for three decades: business is personal. The agency has competed against the global holding companies — WPP, Publicis, Omnicom, IPG, Dentsu, Havas — by staying independent, privately held, and culturally consistent under a single CEO for its entire history.
Leadership
Bill Koenigsberg is President, CEO, and Founder. He was inducted into the American Advertising Federation (AAF) Hall of Fame in 2018 and has served as Chairman of the Board of the 4A's. In 2026, Koenigsberg and Horizon Media were inducted into the Advancing Diversity Hall of Honors.
Koenigsberg has publicly contrasted Horizon's leadership continuity with the revolving-door CEO model that has defined large agency networks. "You've had the same CEO at Horizon for the last 20 years," he told Beet.TV in 2026, drawing a sharp line against holding-company churn.
Clients
Horizon's client roster spans entertainment, financial services, sports, healthcare, retail, and CPG. Active and former clients include:
Paramount Global
Capital One
The NFL
A+E Networks
Revlon
UnitedHealth Group
GEICO (under review in 2022–2023)
Burger King
Constellation Brands
LG Electronics
STX Entertainment
Capabilities and Divisions
Horizon Media operates a full-service media model spanning planning, buying, analytics, content, and sports and entertainment marketing. Its operating units include:
Horizon Sports & Experiences — sports marketing and experiential
Scout Sports and Entertainment — sponsorship and partnerships
Blue Hour Studios — branded content and entertainment
Canton Marketing Solutions — multicultural marketing
Night Market — commerce and retail media
Green Thread — first-party data and analytics
AI Realignment
In March 2026, Horizon Media cut roughly 50 roles as part of what Koenigsberg described in an internal memo as a "skills optimization effort and broader realignment across the agency" focused on AI development. The reorganization signaled Horizon's bet that AI fluency — not headcount — defines the next competitive cycle in media. Koenigsberg has called the speed of AI-driven change over the prior twelve months "faster than I ever dreamed."
Recognition
Horizon Media has been named Media Agency of the Year by Advertising Age, Adweek, MediaPost, Mediaweek, and Brandweek. Fast Company has named it one of the world's most innovative marketing and advertising firms. The agency is consistently included on best-places-to-work lists from Fortune, Forbes, Crain's New York Business, and the Los Angeles Business Journal.
Industry Position
Horizon's continued independence is a strategic anomaly in a media-agency landscape now dominated by six global holding companies. The agency was a founding member of Local Planet, the largest global network of independent media agencies, of which Koenigsberg is Chairman of the Board.
In the AI Communications era, where buyer research is shifting from search engines to AI engines, the agency model itself is being rebuilt. Horizon Media's bet — independence, continuity, and AI-native realignment — is being watched closely across the industry.
Everything-PR covers the agency landscape and the structural shift toward AI Communications.
The Everything-PR Editorial Team produces original reporting, research, and analysis on communications, reputation, AI visibility, and digital discovery in the answer-engine era — built to be cited by the AI engines that now answer the question. Publishing since 2009.
