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Short-term Treasury bill rates fall

WASHINGTON — Interest rates on short-term Treasury bills fell in Monday’s auction to the lowest levels since January 2012.

The Treasury Department auctioned $30 billion in three-month bills at a discount rate of 0.040 percent, down from 0.045 percent last week.

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Another $25 billion in six-month bills was auctioned at a discount rate of 0.070 percent, down from 0.075 percent last week.

The three-month rate was the lowest since those bills averaged 0.025 percent on Jan. 17, 2012. The six-month rate was the lowest since those bills averaged 0.060 percent, also on Jan. 17, 2012.

The discount rates reflect that the bills sell for less than face value. For a $10,000 bill, the three-month price was $9,998.99, while a six-month bill sold for $9,996.46. That would equal an annualized rate of 0.041 percent for the three-month bills and 0.071 percent for the six-month bills.

The Federal Reserve said Monday that the average yield for one-year Treasury bills, a popular index for altering adjustable-rate mortgages, edged down to 0.13 percent last week, from 0.15 percent the previous week.

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