Selwyn is an economist, CPA and investment advisor. He is a founding member of RVW Wealth LLC, and founder and manager of Gerber & Co. Inc. He is a long-time member of the Executive Board and a Trustee of The Los Angeles Jewish Community Foundation where he also serves as chair of the Israel Grants Committee. Selwyn is a Wexner Heritage fellow; a founding member of the Academy for Jewish Religion, and a founding donor to LimmudLA. He has served on the Board and Executive Committee of Beth Jacob Congregation in Beverly Hills and co-founded the Pacific Jewish Center. Selwyn and his wife, Glynis, have four married children and thirteen grandchildren, and live in Beverlywood.