Modified Freddie Mac mortgages performed better than Fannie Mae loans more than two years after modification as the performance gap between the two GSE closed slowly, according to the Office of the Comptroller of the Currency. The OCC’s latest Mortgage Metrics Report noted that Freddie loans had a 15.5 percent re-default rate six months after modification, while Fannie mods saw a 16.2 percent rate.At the 12-month mark, Freddie stood at 21.9 percent compared to Fannie’s 23.2 percent.