NEW YORK--(BUSINESS WIRE)--Kroll Bond Rating Agency (KBRA) releases research report entitled “Update – Residential Loan Origination & Mortgage Servicing Sector.” The report makes the following points: More than half of the top mortgage originators and servicers in the top 25 are now non-banks. Despite the significant change in the composition of the mortgage lending sector, however, overall mortgage loan origination volumes, both for purchase and refinance transactions, continue a secular d