In the week ended Aug. 3, the weekly average yield to maturity of the Bond Buyer Municipal Bond Index was unchanged at 4.02% from the previous week. The BB40 Index is based on the price of 40 long-term bonds.

The Bond Buyer's 20-Bond GO Index of 20-year general obligation yields decreased two basis points to 3.50% from 3.52% the prior week. It is at its lowest level since Nov. 3 when it was at 3.27%.

The 11-Bond GO Index of higher-grade 20-year GO yield was two basis points lower to 3.01% from 3.03% the previous week. It is at its lowest level since 40 weeks ago, when it was at 2.85%.

The Bond Buyer's Revenue Bond Index yield was down two basis points to 3.70% from 3.72% last week. It is at its lowest level since July 20, when it was at 3.70%.

The yield on the U.S. Treasury's 10-year note was eight basis points lower to 2.23% from 2.31%, while the yield on the Treasury's 30-year bond decreased 12 basis points to 2.81% from 2.93% in the prior week.

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