Thomas Robert Diffely

Research Analyst at D.a. Davidson & Co.

Thomas Robert Diffely is Managing Director and Director of Research - Equity at D.A. Davidson & Co., specializing in technology sector equity analysis with primary coverage of companies such as FormFactor and Photronics as well as other semiconductor firms. Diffely has been recognized for his research contributions and active participation in earnings calls, engaging directly with executive teams of covered companies and contributing to performance tracking in sectors with complex supply chains and advanced manufacturing. With over 25 years of industry experience, he previously held analyst roles at Applied Materials and Merrill Lynch before joining D.A. Davidson over a decade ago, ascending to director in 2024. His professional credentials include registration as a broker with FINRA, holding multiple state securities licenses and an MBA from UC Berkeley along with a Harvey Mudd undergraduate degree.