The weekly average yield to maturity of the Bond Buyer Municipal Bond Index, which is based on 40 long-term bond prices, was down two basis points this week, to 4.63 for the week ending May 1.
The 20-Bond GO Index of 20-year general obligation yields was unchanged at 4.33%, the highest since April 3.
The 11-Bond GO Index of higher-grade 20-year GO yields also were unchanged at 4.04%, the highest since April 3.
The Bond Buyer's Revenue Bond Index, which measures 30-year revenue bond yields slid three basis points to 5.10%, the lowest since Aug. 8, 2013.
The yield on the U.S. Treasury's 10-year note slid seven basis points to 2.62%, after falling four basis points the prior week.
The yield on the Treasury's 30-year bond also strengthened to, 3.41%, the lowest since June 13.
