The latest jumbo mortgage-backed security from JPMorgan Chase differs significantly from others deals issued by the company. The $459.3 million MBS is stocked with mortgages that have relatively high loan-to-value ratios. The average combined LTV ratio for loans in JPMorgan Mortgage Trust 2018-LTV1 is 86.2 percent and nearly every mortgage has an LTV ratio greater than 79.0 percent. The average combined LTV ratio on prime non-agency MBS issued in the third quarter of 2018 was ...