U.S. Treasury prices are falling on gains in U.S. worker productivity and hopes of a new European Central Bank rescue plan.
The price of the 10-year Treasury note fell 15.6 cents Wednesday for every $100 invested. That helped push the yield up to 1.59 percent from 1.58 percent late Tuesday.
The Labor Department reported U.S. productivity rose at an annual rate of 2.2 percent in April-June, up from an initial estimate of 1.6 percent.
The ECB meets Thursday to discuss how to help struggling countries like Spain. Investors hope the central bank will announce plans to buy government debt to help lower borrowing costs for those countries.
The price of the 30-year bond fell 50 cents for every $100 invested. The yield rose to 2.71 percent from 2.68 percent.