Our Funds

Parnassus Mid Cap Fund

Matthew Gershuny

Matthew D. Gershuny

Director of Research, Portfolio Manager

Matthew D. Gershuny is the Director of Research and the lead Portfolio Manager of the Parnassus Mid Cap Fund. He joined Parnassus Investments in 2006 and was previously a Parnassus research intern. Prior to joining the firm, Mr. Gershuny was a Vice President of Equity Research at Cowen and Company; formerly SG Cowen Securities Corporation. Prior to that, he held various equity research and asset management positions at UBS Securities. Mr. Gershuny received his bachelor's degree in philosophy from Cornell University and his master’s degree in business administration from the University of Michigan.

Lori Keith

Lori A. Keith

Portfolio Manager, Senior Research Analyst

Lori A. Keith is a Portfolio Manager of the Parnassus Mid Cap Fund and a Senior Research Analyst. She joined Parnassus Investments in 2005 and was previously a Parnassus research intern. Prior to joining the firm, Ms. Keith was a Vice President of Investment Banking at Deloitte & Touche Corporate Finance LLC and was a Senior Associate in Robertson Stephens & Company's investment banking division. Prior to that, she worked in the management consulting practice at Ernst & Young. Ms. Keith received her bachelor's degree in economics from the University of California, Los Angeles and her master's degree in business administration from Harvard Business School.