Fannie Mae and Freddie Mac saw a 13.1 percent drop in new business in their flagship single-family mortgage-backed securities programs during the second quarter, according to an exclusive analysis and ranking by Inside Mortgage Finance. The two government-sponsored enterprises issued a combined $189.70 billion of single-family MBS during the April-June cycle. It was their weakest quarter since early last year, although year-to-date volume was still up 4.3 percent from the first half of 2016. As widely predicted, the decline was...[Includes three data tables]