Interest rates on short-term US Treasury securities were mixed in auctions held on Monday with rate on six-month bills up to the highest level in more than threeyears.

The US Treasury Department sold 17 billion dollars in six-month bills at a rate of 2.465 percent, up from 2.425 percent. The rate was the highest since September 17, 2001, when the rate was 2.570 percent.

An additional 19 billion dollars were auctioned in three-month bills at a discount rate of 2.180 percent, down from 2.220 percent last week. The rate was the lowest since November 22 when they were sold for 2.155 percent.

In a separate report, the US Federal Reserve reported on Monday that the average yield for one-year constant maturity Treasury bills, a popular index for making changes in adjustable rate mortgages, increased to 2.66 percent last week from 2.60 percent the previous week.

Source: Xinhua