David Mouser

David Mouser is a Portfolio Manager at Driehaus Capital Management LLC based in Chicago, Illinois, where he leads the Driehaus International Small Cap Growth strategy. In this capacity, he is responsible for idea generation, portfolio construction, security selection, and investment research, with a particular focus on identifying international small-cap companies experiencing significant growth inflections.

He has been with Driehaus since 1999, initially joining as a global research associate and domestic research assistant before progressing to analyst roles on micro-cap growth and long-short strategies. Mouser became assistant and co-portfolio manager in 2005 before assuming full portfolio management responsibilities, demonstrating a steady career trajectory within the firm.

Mouser holds a Bachelor of Science in Finance from the University of Dayton. His expertise encompasses international equities, particularly non-U.S. small-cap growth stocks, and he is recognized for applying a growth-oriented, bottom-up investment approach that seeks alpha generation through inflection-driven market inefficiencies.