Our Team

Bill Tanner is the Chairman and Co-Equity Portfolio Manager of AMI Asset Management. He Co-Founded the firm in 1994, has been the portfolio manager since the inception of the firm and is still a member of the firm’s Investment Committee. Mr. Tanner began his career in public accounting auditing small and medium-sized companies before co-founding the CPA/Business Management firm Tanner Mainstain Glynn & Johnson in 1975. He earned a degree in Business Administration and Accounting from the University of California, Los Angeles and a Master’s Degree in Taxation. Mr. Tanner is a shareholder of the firm. He is also a longtime board member of the UCLA Jonsson Cancer Center Foundation.

Matt Humiston directs the day-to-day operations of AMI. When Mr. Humiston joined the firm in 2000, he and Bill Tanner formulated the investment process that AMI uses today. Mr. Humiston oversees the portfolio management trading and reporting operations. Prior to joining AMI, Mr. Humiston worked at internet startup Pop.com and at Brillstein-Grey Entertainment. He earned a Bachelor of Arts in Economics degree from the University of California, Santa Barbara. Mr. Humiston is a shareholder of the firm.

Christian Sessing leads the equity research efforts for the firm and his role involves portfolio construction for all of the firm’s equity strategies. He began his career as an Equity Analyst with a regional brokerage firm and then spent 5 years at Crowell, Weedon & Co. He earned a Bachelor of Business Administration with a concentration in Finance from California State University, Northridge. His professional and business activities consist of being a member of the CFA Institute. Mr. Sessing has been with the firm since 2005 and is a shareholder.

Andrew Zamfotis co-manages AMI's equity strategies and spearheads the firm's thematic research efforts. Prior to joining AMI, Mr. Zamfotis was a Senior Analyst at EVA Dimensions, an equity research firm focused on economic profit-based models whose clients manage over $100 billion. Prior to EVA, he was a senior analyst at the long/short hedge fund Legarde Capital Management. Mr. Zamfotis began his career at the Halyard Capital Fund, a private equity fund where he was responsible for the Fund’s investments into Technology, Media, Internet, and Telecommunications companies. He holds a Bachelor of Science in Finance and Information Systems degree from New York University’s Stern School of Business where he graduated with honors. He is a CFA® Charterholder and has been with the firm since 2015. Mr. Zamfotis is a shareholder of the firm.

Daniel Schniedwind is responsible for managing the firm's tax-exempt, taxable and high yield fixed income strategies. Prior to joining the firm, Mr. Schniedwind was a Senior Credit Analyst at Denver Investments for 5 years. Mr. Schniedwind started his career as a Credit Analyst/Portfolio Assistant at AMI Asset Management. He earned a Masters of Science degree in Finance from Indiana University and a Bachelors of Arts degree in Economics from Whittier College. Mr. Schniedwind is a CFA® Charterholder and rejoined the firm in 2019.

Katharine Kim leads the day-to-day implementation and maintenance of the firm’s compliance program to ensure compliance with all industry regulations. Mrs. Kim coordinates all the audits at the firm, including the annual GIPS audit. She also oversees the daily management of client accounts and the the administration of new accounts. Mrs. Kim began her career performing client services duties at Dreyfus Brokerage Services. She earned a Bachelor of Arts in Economics degree from the University of California, San Diego. Mrs. Kim has been with the firm since 2002 and is a shareholder.

Richard Schimbor assists in all phases of the equity research process, including model construction, news and event tracking, and research projects. Mr. Schimbor began his career at Falcon Point Capital, a long short hedge fund in San Francisco. Most recently Mr. Schimbor served as an Assistant Vice President at U.S. Bancorp. Richard has held internships in equity research with Trust Company of the West and Dalton Investments. Mr. Schimbor received a B.A. in Economics with Highest Honors from the University of California, Berkeley and an M.B.A from the UCLA Anderson School of Management. Mr. Schimbor is a CFA® Charterholder and has been with the firm since 2016.

Andrhe Cunha is responsible for assisting in all phases of the equity research process, including model construction, news and event tracking, and research projects. Mr. Cunha began his career as an Equity Research Intern at Wedbush Securities, a privately held investment firm based in Los Angeles. Mr. Cunha received his B.S. in Business Administration with Highest Honors from the Marshall School of Business at the University of Southern California. Mr. Cunha has been with the firm since 2023. Andre is a CFA Program Level II Candidate.

Erin Gudino is responsible for the daily management of client accounts and administration of new accounts. Mrs. Gudino previously worked as an administrative assistant at KPMG LLP in Boston. She earned a Bachelor of Arts in Media Studies degree from Sacred Heart University. Mrs. Gudino has been with the firm since 2010.

Andrew Kim is responsible for implementing the equity trading for AMI. He also assists in the daily management of client accounts. Previously, Mr. Kim worked in the technology sector and later transitioned into an operational role in renewable energy. He received his Bachelor of Science in Theoretical and Mathematical Physics from the University of Washington. Mr. Kim has been with the firm since 2025.

Christopher Guerrero is resposnsble for equity trading and coordinating proxy voting. Previously, Mr. Guerrero worked at Tanner, Mainstain, Glynn & Johnson for 17 years as the IT Director. He received a Bachelor of Sciences in Psychology and Political Science degree from the University of California, Los Angeles. Mr. Guerrero has been with the firm since 2014.

Michael graduated from the University of Southern California in 2023 with a Bachelor’s degree in Business Administration. Supports the firm’s business development efforts by analyzing sales data and client trends. Provides insights that help strengthen relationships, identify opportunities, and improve the efficiency of our sales and marketing strategies. Mr. Caruso has been with the firm since 2025.