Fannie Mae and Freddie Mac mortgage-backed securities remained the preferred investment choice of the 11 Federal Home Loan Banks during the fourth quarter of 2015 and for the year, according to a new ranking by Inside The GSEs based on data from the Federal Housing Finance Agency. There was a slight 0.9 percent quarterly decline, but a generous 34.7 percent increase from a year earlier. GSE MBS accounted for 77.9 percent of combined MBS portfolios. The FHFA data does not separately break out Fannie and Freddie volume or share.Meanwhile, Ginnie Mae investments accounted for 11.7 percent and non-agency investments were 10.4 percent.