Walter Investment Management does its best to collect from the credit-challenged. The firm owns and services residential mortgages (particularly those of the subprime and nonconforming variety) for itself as well as for government sponsored entities, government agencies, third-party securitization trusts, and other credit owners. Operating through subsidiaries Walter Mortgage Company; Hanover Capital; Marix Servicing; Ditech; and third-party credit servicer Green Tree, Walter Investment Management services 2 million residential loan accounts with unpaid balances of $256 billion, making it one of the 10 largest mortgage servicers in the US. The firm also originates residential loans, including reverse loans.