The volume of new business flowing through Fannie Mae and Freddie Mac – a lagging indicator of primary market originations – declined modestly during the second quarter of 2013, according to a new analysis and ranking by Inside Mortgage Finance. The two government-sponsored enterprises securitized $337.74 billion of single-family mortgages during the second quarter, down 5.1 percent from the first three months of the year. The decline reversed an upward trend in quarterly GSE production that started in the third quarter of 2012. Even with the downturn, business at Fannie and Freddie was up 20.0 percent over the first six months of last year. The second-quarter decline clearly reflected...[Includes three data charts]