Two of the three major nonbank mortgage servicers are sticking by plans to acquire more portfolios from banks this year, despite regulatory scrutiny and concern they are growing too fast.

Walter Investment (WAC), in particular, said on its fourth-quarter earnings call it expects to purchase another $25 billion to $50 billion in mortgage servicing rights, on top of the $60 billion it had previously announced last year. Nationstar (NSM) told investors it has a pipeline of $350 billion in deals, though it said transfers would occur at a slower pace. Only Ocwen (OCN), which put a $2.7 billion deal with Wells Fargo (WFC) on "indefinite hold" in February after New York regulators raised concerns, kept mum about acquisitions on its conference call.

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