Investors are still a major hurdle for industry efforts to put Fannie Mae and Freddie Mac MBS on a more level playing field, while Ginnie Mae is beginning to weigh its options to address a major shift in the profile of its MBS business. Freddie’s share of new MBS production by the two government-sponsored enterprises has dropped significantly over the past few years. The company typically accounted for 42 percent to 45 percent of GSE issuance up until 2008, when it fell to 39.8 percent. Last year, Freddie captured just 35.4 percent of the GSE market, and in the first nine months of 2012 it’s down to 34.2 percent. Steven Abrahams, a managing director at Deutsche Bank, said...