New business volume at Fannie Mae and Freddie Mac slowed down markedly in October, as the two government-sponsored enterprises combined for $96.73 billion in new business during the month. That was down 27.3 percent from the previous month. Oddly, both GSEs saw virtually identical declines in new business during the month. After very strong business volume in August and September, the GSE market in October reverted to the levels seen during the summer. … [One data table included]