Ken Fisher has been published, interviewed and/or been written about in numerous major American, British, and German finance and business periodicals. Ken Fisher's theoretical work in the 1970s led to the development of a tool known as the Price-to-Sales Ratio, which is now part of core financial curriculum. His recent research, which focuses on the emerging field of behavioralism, has appeared in many professional and scholarly journals such as the Journal of Portfolio Management and Financial Analysts Journal.