Ellington Management Group | 8,551 followers on LinkedIn. Ellington Management Group is an investment management firm dedicated to generating attractive risk-adjusted total returns for institutional investors by positioning itself at the forefront of data-driven investing. The firm’s core competencies include deep expertise in diversified credit, mortgage, and fixed income markets. Founded in 1994, today Ellington employs over 160 people across offices in Connecticut, New York, and London.