Fannie Mae and Freddie Mac securitized $68.13 billion of single-family mortgages in October, an 8.2 percent decline from the previous month, according to a new Inside The GSEs analysis of mortgage-backed securities disclosures. The slowdown appears to be based on seasonal decline in home-purchase activity. The volume of purchase mortgages securitized by Fannie fell 15.3 percent, while Freddie’s purchase-mortgage activity dropped 11.6 percent. Fannie’s refinance activity was off 1.0 percent from September, while Freddie saw a 5.8 percent increase in its refi business for the month. Overall, Freddie single-family MBS issuance was down 7.2 percent from September, while Fannie’s volume fell 9.2 percent. On a year-to-date basis, both GSEs were still well ahead of the pace they set during the first 10 months of 2014.