Originations of jumbo mortgages rose sharply during the second quarter of 2015, including loans in high-cost housing markets that are eligible for agency mortgage-backed securities, according to a new Inside Mortgage Finance ranking and analysis. During the second quarter, the market produced a whopping $127.6 billion of home mortgages that exceeded the $417,000 benchmark conforming loan limit, a 33.1 percent increase from the first three months of the year. Jumbo mortgages accounted for 28.7 percent of second-quarter originations, the highest ratio since “emergency” high-cost limits were set back in 2008. Most of the jumbo production was...[Includes three data tables]