Issuance of jumbo mortgage-backed securities has ground to a halt recently but that hasnt stopped lenders that were participating in the jumbo MBS market from originating loans. Instead, some have shifted their output of jumbos to whole-loan sales. PrimeLending, W.J. Bradley Mortgage and other jumbo lenders whose loans helped fuel the surge in jumbo MBS issuance in the first half of 2013 have shifted to selling whole loans directly to investors, often banks. Scott Eggen, director of capital markets at PrimeLending ...