Fannie Mae and Freddie Mac reduced their retained mortgage portfolios by a combined $44.4 billion during the second quarter, a period during which the government-sponsored enterprises posted substantial increases in net earnings. Freddie Mac’s non-agency MBS holdings declined 11.6 percent, while its un-securitized whole-loan portfolio dropped 3.0 percent. The GSE sold $3.3 billion of non-agency MBS and securitized $2.1 billion of single-family ... [Includes one data chart]