Sellers of jumbo whole loans into the secondary market are getting prices of up to 103 – and in some cases more – which on paper might throw a monkey wrench into the economics of trying to create a new MBS, but it’s not turning out that way. According to loan traders and industry consultants, MBS spreads to Treasuries have tightened over the past several weeks, making the economics of issuing a security better, even though the price for the underlying product might look a bit rich for potential issuers. “The cost of funds are going down,” said one trader. According to Craig Cole, a principal in Emerald Consulting LLC, the price paid...