James St. Aubin, CFA®, CAIA®, is Chief Investment Officer for Sierra Investment Management. He has oversight of all activities of the Investment Management department, in collaboration with Sierra co-founders David Wright and Kenneth Sleeper. An accomplished investment management executive, his career of more than 20 years includes leadership roles in asset allocation, manager research and portfolio construction. James earned a Bachelor of Science in Finance from DePaul University and is a CFA® and CAIA® Charterholder. He is a Board Member and Treasurer for Children’s Bureau of Southern California, a local non-profit organization focused on primary prevention of child abuse.


James St. Aubin
Chief Investment Officer and Portfolio Manager
Sierra Investment Management
United States, California, Santa Monica
About Me
Profile Information
Chief Investment Officer and Portfolio Manager
Sierra Investment Management
Investment Team,Operations Team
Investor
RIA/Wealth Manager/Asset Manager
Santa Monica
California
United States
Aug 18, 2025
Work Experience
Ocean Park Asset Management
Chief Investment Officer Jul 2022 - Present
Email: james.staubin@sierrainvestment.com
Sierra Investment Management
Chief Investment Officer and Portfolio Manager Jul 2022 - Present
Email: james.staubin@sierrainvestment.com
More profiles to browse
Gayatri Vyas
Manager - Financial Advisor Support
Kristine Stromeyer
Chief Financial Officer & Chief Operating Officer
JB
Joy Bunzel
Client Services

Kenneth Sleeper
Co-Founder, Senior Advisor, and Portfolio Manager
You Might Like
DH
Darla Hansen
Chief Administrative Officer
Corvus Wealth Advisors
DH
Dennis Hanson
Principal
Jamison Hanson
BH
Bob Helmer
President Emeritus
Baldwin Wallace University
RA
Richard A. Davies
Partner, COO & CCO
O‘Brien Wealth Partners LLC