It doesn’t happen often in the agency MBS market, but Ginnie Mae last month took the yellow jersey away from Fannie Mae. Ginnie issued a record $45.54 billion of single-family MBS in July, the agency’s biggest monthly output ever. That was a 12.6 percent increase from June, and nudged past Ginnie’s previous biggest month, July 2009, when its issuers pumped out $44.84 billion of single-family MBS. And it beat Fannie’s $44.14 billion of ... [Includes two data charts]