Interest rates on short-term Treasury bills fell in Monday's auction, with six-month bills falling to their lowest level in three weeks.
The Treasury Department auctioned $42 billion in three-month bills at a discount rate of 0.340 percent, down from 0.360 percent last week. Another $36 billion in six-month bills was auctioned at a discount rate of 0.470 percent, down from 0.495 percent last week.
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The three-month rate was the lowest since three-month bills averaged 0.310 percent two weeks ago on Oct. 3. The six-month rate was the lowest since those bills averaged 0.420 percent three weeks ago on Sept. 26.
The discount rates reflect that the bills sell for less than face value. For a $10,000 bill, the three-month price was $9,991.41, while a six-month bill sold for $9,976.24. That would equal an annualized rate of 0.345 percent for the three-month bills and 0.478 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, edged down to 0.66 percent last Friday after starting the week at 0.69 percent on Monday, Oct. 10.