The mortgage refinance business began losing steam in the third quarter, but purchase-mortgage lending helped sustain agency single-family MBS production during the period, according to a new market analysis and ranking by Inside MBS & ABS. Fannie Mae, Freddie Mac and Ginnie Mae combined to issue $351.70 billion of single-family MBS during the third quarter of 2015, a slight 0.3 percent decline from the previous period. Even with the slowdown, year-to-date agency MBS volume of $976.40 billion had already topped the $929.49 billion in gross issuance for all of last year. The bright spot was...[Includes two data tables]