Spain sold 4.8 billion euros ($6.2 billion) of bonds, the most since January, and its borrowing costs fell as expectations the nation will ask the European Central Bank to buy its debt grew. The Madrid-based Treasury beat its maximum target of 4.5 billion euros, selling its benchmark 10-year bond at an average 5.666 percent, the lowest at auction since January. That compared with 6.647 percent when it was last sold on Aug. 2 and 5.724 percent on the secondary market before the auction. The Treasury also sold three-year bond to yield 3.845 percent. Spanish three-year yields have fallen by about 2 percentage points ... (full story)