Correspondent-based mortgage production operations lost some ground in the conventional-conforming market during the second quarter of 2018 but made up some of it in an unlikely sector: jumbo originations. Jumbo production by correspondent lenders increased by a huge 63.7 percent from the first to the second quarter of 2018, according to a new Inside Mortgage Trends analysis. The data come from Inside Mortgage Finance surveys from lenders ... [Includes two data charts]