Originations of non-agency jumbo mortgages declined in the fourth quarter as well as full year 2018, according to an Inside Nonconforming Markets analysis. The sector also lost market share with lenders noting weak demand. [Includes one data chart]

The loans included in expanded-credit mortgage-backed securities in the fourth quarter of 2018 had on average tighter underwriting than previous issuance. [Includes one data chart.]