JPMorgan Chase is preparing to issue a non-agency mortgage-backed security stocked entirely with loans eligible for sale to the government-sponsored enterprises. While Chase has long included GSE-eligible loans in its non-agency MBS, the deals generally also include non-agency jumbo mortgages. The mortgages in the $313.56 million deal largely look to be conforming jumbos. The loans have an average balance of $527,877. Fitch Ratings noted that the collateral attributes of the pool are ...