Issuance of single-family agency MBS rose 6.9 percent from July to August, according to a new ranking and analysis by Inside MBS & ABS. Fannie Mae, Freddie Mac and Ginnie Mae issued a combined $138.25 billion of single-family MBS last month, their strongest aggregate monthly output since July 2013. Agency production volume has risen for six straight months since bottoming out in February of this year. Although the purchase-mortgage market has gotten most of the attention in recent months, it was...[Includes two data tables]