Apartment Investment and Management Company (Aimco) is a self-administered and self-managed real estate investment trust (REIT). The Company operates through two segments: conventional real estate and affordable real estate. As of December 31, 2014, the Company's conventional portfolio consisted of 144 apartment communities with 43,393 apartment homes in , which it held an average ownership of approximately 97%. It also operates a portfolio of affordable apartment communities, which consists of apartments with rents that are generally paid, in whole or part, by a government agency. As of December 31, 2014, its affordable portfolio consisted of 59 apartment communities with 8,943 apartment homes in , which it held an average ownership of approximately 93%. Aimco, through its wholly owned subsidiaries, AIMCO-GP, Inc. and AIMCO-LP Trust, owns the ownership interests in the Aimco Operating Partnership.