JPMorgan Chase and Two Harbors Investment are preparing to issue two new jumbo mortgage-backed securities. The $483.56 million JPMorgan Mortgage Trust 2014-IVR3 is set to receive AAA ratings from DBRS and Kroll Bond Rating Agency. The deal includes a number of unique characteristics, including consisting solely of adjustable-rate mortgages and having representations and warranties that DBRS deemed as weak. The majority of the loans in Chase’s planned MBS are seven-year ARMs ...