GREENWOOD VILLAGE, Colo.--(BUSINESS WIRE)--Empower and Milliman, Inc. today announced they have entered into a definitive agreement for Empower to acquire Milliman’s retirement administration business. The acquisition will add significant expertise, broader capabilities and an expanded workplace solutions portfolio to Empower’s existing business. Milliman is retaining its retirement and healthcare actuarial consulting business and expects to enter a strategic partnership with Empower following