Brian Wieser

Brian Wieser is one of the advertising and media industry's most authoritative voices, widely recognized for his rigorous economic analysis of global advertising markets and his ability to translate complex market dynamics into actionable intelligence. As the founder of Madison and Wall, an independent advisory firm, he produces research and forecasts that are routinely cited by major financial and trade media outlets including The Wall Street Journal, Financial Times, and The New York Times. His annual and quarterly advertising spending forecasts have become benchmarks for the industry, influencing how brands, agencies, and investors understand the trajectory of media and advertising. Before founding Madison and Wall, Wieser served as Global President of Business Intelligence at GroupM, WPP's media investment arm and the world's largest media buying organization, from approximately 2021. Prior to that, he spent years as a senior equity research analyst at Pivotal Research Group, where he was consistently ranked among Wall Street's top analysts covering advertising, media, and internet sectors. He also held research roles at Sanford C. Bernstein, further cementing his reputation as a rigorous and independent thinker on advertising economics. Wieser's analytical work spans the full breadth of the modern advertising ecosystem, from the rise of digital platforms like Google and Meta to the structural transformation of traditional television and print media. He is a frequent speaker at major industry conferences and is sought after by executives, investors, and policymakers for his perspective on advertising market trends, platform economics, and the future of media investment.

• MBA, University of Southern California
• Bachelor's Degree, University of Western Ontario

• Founded Madison and Wall, an independent advisory firm that produces widely cited advertising market forecasts
• Served as Global President of Business Intelligence at GroupM, the world's largest media investment company
• Consistently ranked as one of Wall Street's top equity research analysts covering advertising and media at Pivotal Research Group
• Advertising spending forecasts regularly referenced by The Wall Street Journal, Financial Times, and The New York Times

• Madison and Wall research notes and advertising market forecasts (ongoing)
• GroupM 'This Year Next Year' global advertising forecast reports (2021-2022)
• Pivotal Research Group equity research reports on advertising and media (2012-2021)