The government-sponsored enterprises plan to expand their risk-sharing activities in a number of ways in 2015, according to officials at the GSEs and the Federal Housing Finance Agency. Kevin Palmer, a vice president of strategic credit costing and structuring at Freddie Mac, said Freddie is set to include a broader group of mortgages in its risk-sharing transactions in an effort to increase the investor base. Fannie has similar plans. The GSEs have issued...