WASHINGTON — Interest rates on short-term Treasury bills were mixed in Monday's auction, with rates on three-month bills rising to their highest level since August and rates on six-month bills unchanged.
The Treasury Department auctioned $24 billion in three-month bills at a discount rate of 0.025 percent, up from 0.020 percent last week. Another $28 billion in six-month bills was auctioned at a discount rate of 0.060 percent, unchanged from last week.
The three-month rate was the highest since those bills averaged 0.030 percent on Aug. 25.
The discount rates reflect that the bills sell for less than face value. For a $10,000 bill, the three-month price was $9,999.37, while a six-month bill sold for $9,996.97. That would equal an annualized rate of 0.025 percent for the three-month bills and 0.061 percent for the six-month bills.
Separately, the Federal Reserve said Monday that the average yield for one-year Treasury bills, a popular index for making changes in adjustable rate mortgages, was 0.12 percent last week, up from 0.11 percent the previous week.