The weekly average yield to maturity of The Bond Buyer Municipal Bond Index, which is based on 40 long-term bond prices, fell two basis points to 4.26% in the latest week from 4.28% in the previous week.
The Bond Buyer's 20-Bond GO Index of 20-year general obligation yields dropped two basis points to 3.92% from 3.94% in the prior week. It is at its lowest level since Feb. 9 when it was at 3.88%.
The 11-Bond GO Index of higher-grade 20-year GO yields decreased two basis points to 3.43% from 3.45% in the previous week. It is at its lowest level since Feb. 9 when it was at 3.38%.
The Bond Buyer's Revenue Bond Index declined three basis points to 4.08% from 4.11% last week. It is at its lowest level since Feb. 9 when it was at 4.03%.
The yield on the U.S. Treasury's 10-year note fell seven basis points to 2.38% from 2.45%, while the yield on the Treasury's 30-year bond decreased three basis points to 3.02% from 3.05% in the prior week.