In Europe, the Stoxx 600 Index ended the day with a 0.4 per cent advance from the previous close. Stocks also gained in Germany, France and the UK.
Investors are betting the European Central Bank will take action to help lower borrowing costs for struggling euro-zone members notably Spain and Italy.
"The market has moved to the belief that [the ECB] is going to do whatever it takes," William Larkin, fixed income portfolio manager at Cabot Money Management in Salem, Massachusetts, told Reuters.
And those expectations helped push Spain's yields lower at today's auction of 12- and 18-month securities. The yield for bills maturing next August fell to 3.07 per cent from 3.92 per cent at a sale on July 17, according to Bloomberg News. The yield for the notes maturing in February 2014 dropped to 3.34 per cent from 4.24 per cent.
The euro also benefited, strengthening to its highest level since early July against both the greenback and the Japanese yen. The euro, at US$1.2469, had earlier climbed as high as US$1.2488, the strongest since July 5, and had reached 99.18 yen, the highest level since July 6.
"The euro continues to be buoyed by investors' selectively optimistic reading of official statements supporting bailout packages and the periphery," Noel Hebert, chief investment officer at Bethlehem, Pennsylvania-based Concannon Wealth Management, told Bloomberg. "We're still in this revolving door of crisis cycle with nothing getting resolved."
The UK, meanwhile, unexpectedly reported a budget deficit in July, underpinning the dire straits of the economy which has contracted for three consecutive quarters.