Fannie Mae and Freddie Mac mortgage-backed securities remained the preferred investment choice of the 12 Federal Home Loan Banks during the first quarter of 2012, with a modest increase from the previous quarter, according to a new analysis and ranking by Inside The GSEs based on data from the Federal Housing Finance Agency. Meanwhile, Ginnie Mae securities posted a decline within the FHLBank system during the first three months of the year. GSE MBS accounted for 70.7 percent of combined FHLBank MBS portfolios, up 2.3 percent from the fourth quarter of 2011. The Finance Agency’s data do not separately break out Fannie and Freddie volume or share.