More important, the yield on the 30-year bond plunged to 6.64 percent, its lowest since April.

As a result, the yield plunged to 8.29 percent, from 8.41 percent a week earlier.

In the bond market, the yield on the Treasury's 10-year note plunged to 3.98 percent, from 4.09 percent a week earlier.

The long bond's yield plunged to 8.07 percent, from 8.15 percent on Monday.

The yield plunged to 4.29 percent from 4.44 percent on Tuesday, its lowest level since the fall of 1998.

The yield on the 30-year bond plunged to 6.85 percent, down from 6.95 Wednesday.

The yield on the Treasury's two-year note plunged below 3 percent, the lowest level since the security was first issued in the late 1970's.

The yield on the two-year note plunged to 2.98 percent from 3.51 percent.

The yield on the 30-year Treasury bond plunged to 4.72 percent and has now fallen four-tenths of a percentage point in just the last week.

The price of the five-year note was up 10/32 as the yield plunged to 4.94 percent, from 5.01 percent and the lowest in 26 years.