Lexicon Partners’ success has been built around its people Lexicon Partners was founded by a team which has worked together for approximately ten years, originally at Phoenix Securities Limited and subsequently at Donaldson, Lufkin & Jenrette International. Since its formation in July 2000, Lexicon Partners has also recruited a number of executives from other major investment banks attracted by the firm’s strong partnership ethos and culture. The firm is wholly owned by its partners and employees.