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James St. Aubin

Chief Investment Officer and Portfolio Manager

Sierra Investment Management

United States, California, Santa Monica

About Me

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.

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

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