Treasury debt prices slightly extended losses Thursday, with the benchmark yield reaching its highest since late December, after below-average demand in an auction of reopened 10-year Treasury notes.

U.S. Treasurys rallied Wednesday as stock losses, higher crude oil prices and rumored investment banking losses spurred a bid for safe-haven government debt after a two-day retreat.

U.S. government bond prices fell Tuesday, pushing two-year yields to their highest since January, as inflation fears increased expectations the Federal Reserve would raise interest rates this year to control price growth.

Treasury debt prices fell Monday as lower oil prices helped boost stocks and undermined any safe-haven bidding for government debt.

Treasurys rallied Friday after the U.S. jobless rate jumped to its highest in more than 3-1/2 years, soothing fears of an imminent interest rate hike by the Federal Reserve.

Treasury debt prices fell after a surprise drop in weekly jobless claims soothed recession fears and increased expectations the Federal Reserve will raise interest rates later this year.

Treasury debt prices turned firmly higher Tuesday afternoon after relatively decent demand in an auction of 1-year bills, and with some safe-haven buying as stocks extended losses.

Treasury debt prices rallied to session highs Monday after Standard & Poor's warned that outlooks on large US banks are now predominantly negative, spurring a fresh round of safety bids for bonds.

Treasury debt prices rose Friday after a key inflation reading that was in line with expectations provided investors some relief that price pressures may not be careening out of control.

Treasury debt prices fell Thursday for a third straight session as worries over inflation and a spate of new debt supply continued to weigh on bonds.

U.S. Treasury debt prices fell Wednesday after a key barometer of business investment posted a surprisingly sharp gain last month, dimming fears the U.S. is in a dire recession.

Treasury debt prices recouped some of the previous session's steep losses Friday as falling stocks reignited safe-haven buying of government debt ahead of a long holiday weekend.

Americans are fooling themselves if they think U.S. inflation is under control, the manager of the world's largest bond fund said

Treasury debt prices fell Thursday as escalating inflation concerns driven by surging energy prices took a toll on sentiment, with data showing some signs of job market resilience adding to the selloff.

Treasurys slipped Wednesday as profit-taking on the previous day's gains made early weakness -- driven by a rise in German business sentiment -- more pronounced before the release of minutes from the Federal Reserve's most recent monetary policy meeting.