Home-loan securities guaranteed by Ginnie Mae are trading at about record premiums over Fannie Mae bonds as foreign investors target debt with the strongest backing from the U.S. and lenders including Bank of America Corp. seek notes considered the least risky by regulators. The price difference between U.S.-owned Ginnie Mae’s 4.5 percent, 30-year securities and similar debt from government- supported Fannie Mae has almost tripled this year to about 3 cents on the dollar, exceeding 3.1 cents last month, according to data compiled by Bloomberg.