Protests in Spain and Greece put the European sovereign debt crisis centre stage, renewing investors' worries about the risk the euro zone's problems pose to global growth and corporate profits.
Those concerns are underpinning demand for fixed-income securities including US Treasuries, and helped fuel appetite for today's auction of US$35 billion of five-year bonds.
"It was a good auction," Charles Comiskey, head of Treasury trading at Bank of Nova Scotia in New York, which as a primary dealer is obliged to bid in US debt offerings, told Bloomberg News. "It is suggesting more and more fear - that things could spiral out of control in Europe. The demand for dollars and Treasuries continues to rise."
All eyes are on Spain, which is scheduled to announce its budget tomorrow. And on Friday, Moody's will publish its latest review of the nation's credit rating. In contrast to rising demand for US government bonds, the yield on Spain's 10-year bond surged more than 30 basis points back through the 6-per cent mark.
Figures released on Tuesday suggested Spain will miss its public deficit target of 6.3 per cent of gross domestic product this year, and on Wednesday the Bank of Spain said the economy continued to shrink markedly in the third quarter, according to Reuters.