Interest rates on short-term Treasury bills rose in Monday’s auction, with rates on three-month bills rising to the highest since late December.
The Treasury Department auctioned $28 billion in three-month bills at a discount rate of 0.055 percent, up from 0.035 percent last week. Another $20 billion in six-month bills was auctioned at a discount rate of 0.065 percent, up from 0.060 percent.
The three-month rate was the highest since three-month bills averaged 0.065 percent on Dec. 30. The six-month rate was the highest since these bills averaged 0.080 percent on Jan. 6.
The discount rates reflect that the bills sell for less than face value. Full story for BostonGlobe.com subscribers.