The universe of servicing single-family home loans for Fannie Mae, Freddie Mac and Ginnie Mae continued to expand in the third quarter, but a handful of large banks wanted little to do with it. The three agencies had a combined $6.378 trillion of single-family mortgage-backed securities outstanding at the end of September, up 1.9 percent from the midway point in the year, according to a new Inside Mortgage Finance analysis of agency MBS disclosures. All three ... [Includes two data charts]