This OCC Mortgage Metrics Report for the first quarter of 2014 provides performance data on first-lien residential mortgages serviced by selected national banks and one federal savings association. The mortgages in this portfolio comprise 48 percent of all first-lien residential mortgages outstanding in the United States-24.5 million loans totaling $4.1 trillion in unpaid principal. This report presents information on their performance through March 31, 2014.