Fannie Mae mortgage holdings grow on loan buyouts

"Fannie Mae (FNM.N), the largest buyer of U.S. home loans, on Thursday said its mortgage portfolio grew in April after it reduced the March rate of serious delinquencies on single-family loans it guarantees.

The delinquency rate fell as the company continued to repurchase loans that were at least 120 days late. These buyouts in turn inflated its mortgage holdings for the second month."