Originations of non-agency jumbo mortgages fell more than overall mortgage production, prompting the sector to lose market share in the third quarter, according to a new analysis by Inside Nonconforming Markets. An estimated $76.0 billion of non-agency jumbos were originated in the quarter, down 5.0 percent from a quarter ago. Total first-lien originations fell by 2.2 percent, according to Inside Mortgage Finance. Jumbos accounted for 17.5 percent of total ... [Includes one data chart]