Gideon serves as the CEO and Managing Partner of the GSH Group, and is responsible for strategic partnership initiatives and ventures, equity and debt opportunities, overseeing investment performance, and approving decisions on investments and acquisitions. He also oversees daily operations. Under Gideon's leadership and direction, in the last five, the GSH Group has raised and placed over $300 million of equity and assembled a portfolio of over 7,500 apartment units in five states, worth over a billion dollars.

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Prior to GSH, Gideon operated a highly successful aggregation and renovation firm focused on single-family homes in the Midwest and Southeast. Through these ventures, Gideon worked with numerous institutional investors helping them navigate the emerging market for SFR and build residential investment portfolios of single-family homes. Between 2010 and 2016 Gideon’s company purchased, constructed, renovated, managed, and/or sold thousands of single-family homes. Using lessons learned from his previous enterprises, Gideon directed his attention to the acquisition and renovation of workforce multifamily housing.

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Gideon contributes articles to INC. Magazine and was selected as one of dBusiness Magazine’s “30 in their 30s” honorees in 2017. He has served on various boards and in advisory roles for non-profit groups focused on community development, solving the housing problem for the "missing middle", as well as the revitalization of the City of Detroit. Having attended Syracuse University and as a recipient of various grants and scholarships, Gideon and his wife pay it forward by having created the Jaime and Gideon Pfeffer Scholarship Fund, created to support students in need attending Syracuse University.