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Brian Wieser

Analyst

Brian Wieser is an Independent Analyst at Madison and Wall, where he produces research and forecasts on global advertising markets that are widely cited across financial and trade media. His career spans senior analyst roles at Sanford C. Bernstein and Pivotal Research Group, as well as a tenure as Global President of Business Intelligence at GroupM, giving him a rare combination of Wall Street rigor and deep industry operating experience. He is recognized as one of the advertising industry's most authoritative voices on the economics of media and advertising spending.

Latest · Brian Wieser’s Madison & Wall expands into global forecasting and makes hire from Warc· Jun 16

Last updated Jun 6, 2026 by the ATDb Editorial Team · Connections updated Jun 17, 2026

Role
Independent Analyst
Company
Madison and Wall
Based
New York, New York, United States
Connections
2
Years in industry
25 years

Bio

Brian Wieser is an Independent Analyst at Madison and Wall, where he produces research and forecasts on global advertising markets that are widely cited across financial and trade media. His career spans senior analyst roles at Sanford C. Bernstein and Pivotal Research Group, as well as a tenure as Global President of Business Intelligence at GroupM, giving him a rare combination of Wall Street rigor and deep industry operating experience. He is recognized as one of the advertising industry's most authoritative voices on the economics of media and advertising spending.

Career

  • Global President, Business Intelligence

    GroupM · 2021-2022

  • Senior Analyst, Advertising & Media

    Pivotal Research Group · 2012-2021

  • Senior Analyst

    Sanford C. Bernstein · 2000s-2012

Advisory roles

Madison and Wall (Founder)

Expertise & education

Expertise

Advertising Spending ForecastingMedia EconomicsDigital Advertising MarketsPlatform Economics (Google, Meta)Television and Streaming AdvertisingMedia Investment StrategyEquity Research – Advertising & MediaGlobal Advertising Trends

Education

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

Speaking topics

Global Advertising Spending TrendsThe Economics of Digital PlatformsFuture of Television and Streaming AdvertisingMedia Market TransformationAdvertising and Macroeconomic Cycles

Recognition

Notable achievements

  • 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

Awards

Repeatedly ranked top analyst in advertising/media by Institutional Investor

Publications

  • 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)
Connection details