The conventional-conforming sector led the mortgage market’s surge in production volume during the first quarter of 2015, according to a new Inside Mortgage Finance ranking and analysis. Lenders originated an estimated $207 billion of conventional-conforming mortgages during the first three months of this year, an 18.3 percent increase from the fourth quarter of 2014. The conventional-conforming sector accounted for 57.5 percent of the $360 billion in overall mortgage originations during the period. The $360 billion is a revision of our initial estimate and does not include home-equity lending. The government and jumbo markets were...[Includes two data tables]