Agency issuance of new single-family MBS edged up slightly from April to May, according to a new Inside MBS & ABS analysis of loan-level data. Fannie Mae, Freddie Mac and Ginnie Mae produced a combined $68.66 billion of new MBS last month, although that was only a 2.4 percent increase over April. There are some positives in the underlying data, however. First, purchase-mortgage volume increases outpaced...[Includes two data charts]