The Bond Buyer
Rise in single-rated municipal bonds spurs investor concerns
A trend toward single-rated municipal bonds has accelerated this year, raising concern among investors who were accustomed to two or three rating agency opinions to support their purchasing decisions.
Single-rating transactions represent about a quarter of new sales by par value so far this year, a 17.5% increase from the rate in all of 2017, according to a report this month from independent research firm Municipal Market Analytics.