Top-shelf municipal bonds finished substantially weaker for longer maturities on Wednesday, according to traders, who saw several big deals hit the screens, led by Chicago's $1 billion O'Hare Airport offering.

The yield on the 10-year benchmark muni general obligation rose seven basis points to 2.52% from 2.45% on Tuesday, while the yield on the 30-year increased 10 basis points to 3.26% from 3.16%, according to the final read of Municipal Market Data's triple-A scale.

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