Eduardo Medeiros

Eduardo Medeiros is a family office executive, investor, and operator with more than 25 years of experience building and leading organizations as a C-level executive, private equity investor, and investment banker across the United States, Europe, and Latin America.

He currently manages 11 1/2 Holdings, a New York-based single-family office that he was recruited by its principals to design, structure, and build from the ground up, transforming an informal, legacy support model into an institutional family office platform. As acting CIO, Eduardo leads portfolio construction across public and private investments in multiple asset classes.

Before 11 1/2 Holdings, Eduardo co-founded SUN Behavioral Health and served as its Chief Financial Officer, scaling the company from concept to four freestanding psychiatric hospitals across four states and more than $100 million in annual revenue. He raised over $100 million in equity and debt, built the finance infrastructure, and helped lead the company's multi-state expansion.

Earlier in his career, Eduardo founded Galeão Partners, an investment firm advising family offices and private investors on Latin American opportunities, where he advised on more than $500 million in private transactions. He was a founding Principal of New MainStream Capital, a private equity fund spun out of Goldman Sachs, and spent nearly a decade at Goldman, Sachs & Co. — as a private equity investor and as an investment banker in the firm's Latin America and Global Healthcare groups, where he completed more than 35 M&A and financing transactions ranging from $200 million to $10 billion. He also served a year as operating officer of Goldman's 80-person Global Healthcare investment banking group. Having built companies as an operator, deployed institutional capital at Goldman Sachs, and designed and run a single family office from the ground up, Eduardo has worked across the full lifecycle of wealth — how it is created, structured, and preserved across generations.

Eduardo holds a Bachelor of Business Administration from Universidade Federal de Santa Catarina in Brazil and completed post-graduate studies in International Economics at Skövde University in Sweden. A U.S. citizen, he is fluent in English, Portuguese, and Spanish.