Interest rates on short-term Treasury bills rose in Monday's auction with rates on three-month bills climbing to their highest level since August and six-month rates reaching their highest level since March.
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 $26 billion in six-month bills was auctioned at a discount rate of 0.075 percent, up from 0.070 percent last week.
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The three-month rate was the highest since those bills averaged 0.030 percent on Aug. 25. The six-month rate was the highest since those bills averaged 0.080 percent on March 17.
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 $9,996.21. That would equal an annualized rate of 0.025 percent for the three-month bills and 0.076 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 0.14 percent last week, unchanged from the previous week.