William N. Thorndike, Jr. founded Housatonic Partners in Boston in 1994 and serves as its Managing Director. See contact routes.
William N. Thorndike, Jr. founded Housatonic Partners in Boston in 1994 and serves as its Managing Director, drawing on over two decades of experience investing in recurring service companies across diverse industries. His investment thesis centers on middle-market private equity with exceptionally long holding periods, notably pioneering the institutional search fund asset class and refining its acquisition criteria. While specific check sizes and lead/follow behavior are not publicly detailed, Thorndike has invested in the vast majority of the top 20 search fund outcomes of all time over the last twenty-five years. His notable portfolio includes Carillon Assisted Living, QMC International, ZircoDATA, and Lincoln Peak Holdings, for which he serves as a director. Thorndike is distinguished as the author of *The Outsiders: Eight Unconventional CEOs and Their Radically Rational Blueprint for Success*, which analyzes unconventional CEOs and their rational capital allocation strategies. He emphasizes determining a strict hurdle rate for investments and creating a data-focused culture that consistently calculates returns using conservative assumptions. His
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