The R3 New Business League is a monthly ranking of the top creative agencies based on their estimated revenue from new business wins. The league is compiled using data supplied by multinational agencies, balanced against client estimates, Nielsen ADEX, and discounted to appropriate levels. The league covers a wide range of industries, including automotive, healthcare, and technology. The top agencies in January 2019 were BBDO, DDB, Leo Burnett, and Ogilvy.