bivey@imfpubs.com

United Wholesale Mortgage was the top contributor to prime non-agency mortgage-backed securities in 2019, according to a new ranking and analysis by Inside Nonconforming Markets.

The privately held nonbank contributed $3.61 billion of loans to prime non-agency MBS last year, accounting for 23.8% of the dollar volume of deals in 2019. UWM, a subsidiary of United Shore Financial, more than tripled its contributions on an annual basis.

Wells Fargo ranked second among originators of securitized prime non-agency mortgages, with $2.42 billion. The bank resumed issuing jumbo MBS in 2018 and leapfrogged JPMorgan Chase and others as a contributor to deals. Chase was the most prolific issuer of non-agency MBS in 2019.

MBS from Chase tends to include a mix of originations by the firm along with contributions from other lenders, including UWM. For more details and an exclusive ranking of the top originators of securitized prime mortgages, see the new edition of Inside Nonconforming Markets, now available online.