Multifamily REIT Apartment Investment & Management Co. (AIMCO) has put a 12-property portfolio worth $150 million on the block. The offering includes...Multifamily REIT Apartment Investment & Management Co. (AIMCO) has put a 12-property portfolio worth $150 million on the block. The offering includes...Multifamily REIT Apartment Investment & Management Co. (AIMCO) has put a 12-property portfolio worth $150 million on the block. The offering includes...Multifamily REIT Apartment Investment & Management Co. (AIMCO) has put a 12-property portfolio worth $150 million on the block. The offering includes...Multifamily REIT Apartment Investment & Management Co. (AIMCO) has put a 12-property portfolio worth $150 million on the block. The offering includes...