Gain Theory Email Format
Advertising ServicesNew York, United States201-500 Employees
Gain Theory is a global advertising services consultancy focused on marketing effectiveness and foresight. It helps brands maximize the return on marketing investments by providing data-driven insights and strategic recommendations across measurement, optimization, and strategy. Based in New York City, the firm serves a global client base and operates as a mid-sized organization. In 2026, Forrester named Gain Theory a Leader in Marketing Measurement and Optimization Services, noting its ability to deliver quantified value from marketing and broader business insights. A recent development involves NBCUniversal Media, LLC partnering with Gain Theory in June 2026 to advance modeling and research around premium video performance.