Top-quality municipal bonds finished weaker on Monday, according to traders, as the market prepared for more than $9 billion of new supply this week.

The yield on the 10-year benchmark muni general obligation on Monday rose three basis points to 2.40% from 2.37% on Friday, while the yield on the 30-year increased three basis points to 3.13% from 3.10%, according to the final read of Municipal Market Data's triple-A scale.

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