Mortgage lenders became gradually more pessimistic about profit margins in 2015, according to Fannie Mae’s most recent lender sentiment survey. In the fourth-quarter survey, 42 percent of respondents expected profit margins to shrink over the next three months. Back in the first quarter of 2015, only 10 percent were in that camp, though the group grew to 25 percent in the second and 38 percent in the third quarters of last year. A minority (13 percent) said they expect margins to ...