Fannie Mae and Freddie Mac have seen an erosion of their market share of new originations to FHA, with Fannie/Freddie mortgage-backed securities issuance going from $309.83 billion in the second quarter, 69.6 percent of the market, down to $172.17 billion, or 57.4 percent. The FHA share, meanwhile, has surged during that time, from $60.08 billion, or 13.5 percent in... [Includes one graph]