Several large servicing portfolios of $1 billion or more hit the market in the past few weeks, but dealmakers and investors continue to wonder about the largest prize of them all: RoundPoint Mortgage, Charlotte, NC, which owns roughly $52.18 billion of receivables and ranks among the top 25. Investment banking officials who claim to have knowledge of the RoundPoint situation maintain that its owner, The Tavistock Group, is hell-bent on selling the nonbank, but as far as coming to final terms with a buyer, any buyer, that’s a different matter. It’s...