Steven Rattner is leaving his position as managing principal at the Quadrangle Group for a post in the Treasury Department as Counselor to the Secretary. He will advise Secretary Geithner on a variety of economic and financial issues, as well as lead the team advising the government regarding the automobile sector. In his place at Quadrangle, Michael Huber and Joshua Steiner will take over as co-presidents of the firm and co-chairs of the investment committee. The two managing principals have been with the firm since its founding in 2000.