JPMorgan Chase is preparing to issue another large non-agency mortgage-backed security, but the deal includes some significant differences compared with the two large portfolio risk-transfer MBS the bank issued last year. The biggest change is that Chase appears to be planning to sell most of the MBS to investors. On the two large portfolio risk-transfer MBS that Chase issued in 2016, the bank retained about 90.0 percent of the issuance. At the time, Chase officials cited ...