Portuguese Bonds Tumble Amid Political Upheaval as Bunds Rally

Portugal’s bonds fell, with 10-year securities set for the longest stretch of weekly declines since at least 1997, amid concern a political dispute will result in new elections and endanger the nation’s financial-aid program.

Ten-year Portuguese yields climbed toward the highest since November after the nation’s debt agency said it would sell bonds regularly should market conditions be conducive. German, French and Dutch bonds advanced after European Central Bank Executive Board member Vitor Constancio said euro-region monetary policy would stay accommodative. Ireland’s 10-year yields dropped the most in a week after Standard & Poor’s raised its outlook for the nation’s debt rating to positive.