Some 4.1 percent of the mortgages to be included in the MBS missed their July payments, with most of the delinquencies due to transfers to Cenlar, according to the term sheet.
Jeff Mezger, president and CEO of KB Home, said the first-timer share of home purchases is rising due to increased employment, noting cities in Texas as an example.
Credit Suisse submitted winning bids on all of the non-agency MBS auctioned by BlackRock, with most of the securities quickly being placed with other investors.
While affluent borrowers prefer to obtain mortgage financing from their primary bank, some in this category are willing to shop, particularly when competing lenders offer lower interest rates or more attractive loan products.