Mortgage brokers accounted for 10.9 percent of single-family mortgages securitized by Fannie Mae and Freddie Mac during the first nine months of 2014, but they achieved far deeper market shares in California and a handful of other states. Brokers originated 21.3 percent of Golden State mortgages during the first nine months of the year, their biggest footprint in any state, according to an exclusive Inside The GSEs analysis of loan-level data ... [Includes one data chart]